Publications
2014 |
Jewison, Christopher M; McCarthy, Bryan; Sternberg, David C; Strawser, Daniel; Fang, Cheng Resource aggregated reconfigurable control and risk-allocative path planning for on-orbit servicing and assembly of satellites Inproceedings AIAA Guidance, Navigation, and Control Conference, pp. 1289, 2014. BibTeX | Tags: @inproceedings{jewison2014resourceb, title = {Resource aggregated reconfigurable control and risk-allocative path planning for on-orbit servicing and assembly of satellites}, author = {Christopher M Jewison and Bryan McCarthy and David C Sternberg and Daniel Strawser and Cheng Fang}, year = {2014}, date = {2014-01-01}, booktitle = {AIAA Guidance, Navigation, and Control Conference}, pages = {1289}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
Tweddle, Brent E; Saenz-Otero, Alvar Relative computer vision-based navigation for small inspection spacecraft Journal Article Journal of Guidance, Control, and Dynamics, 38 (5), pp. 969–978, 2014. BibTeX | Tags: @article{tweddle2014relative, title = {Relative computer vision-based navigation for small inspection spacecraft}, author = {Brent E Tweddle and Alvar Saenz-Otero}, year = {2014}, date = {2014-01-01}, journal = {Journal of Guidance, Control, and Dynamics}, volume = {38}, number = {5}, pages = {969--978}, publisher = {American Institute of Aeronautics and Astronautics}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Jewison, Christopher; Sternberg, David; McCarthy, Bryan; Miller, David W; Saenz-Otero, Alvar Definition and testing of an architectural tradespace for on-orbit assemblers and servicers Journal Article 2014. BibTeX | Tags: @article{jewison2014definitionc, title = {Definition and testing of an architectural tradespace for on-orbit assemblers and servicers}, author = {Christopher Jewison and David Sternberg and Bryan McCarthy and David W Miller and Alvar Saenz-Otero}, year = {2014}, date = {2014-01-01}, publisher = {International Astronautical Federation}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Tweddle, Brent E; Setterfield, Timothy P; Saenz-Otero, Alvar; Miller, David W; Leonard, John J Experimental evaluation of on-board, visual mapping of an object spinning in micro-gravity aboard the International Space Station Inproceedings Intelligent Robots and Systems (IROS 2014), 2014 IEEE/RSJ International Conference on, pp. 2333–2340, IEEE 2014. BibTeX | Tags: @inproceedings{tweddle2014experimental, title = {Experimental evaluation of on-board, visual mapping of an object spinning in micro-gravity aboard the International Space Station}, author = {Brent E Tweddle and Timothy P Setterfield and Alvar Saenz-Otero and David W Miller and John J Leonard}, year = {2014}, date = {2014-01-01}, booktitle = {Intelligent Robots and Systems (IROS 2014), 2014 IEEE/RSJ International Conference on}, pages = {2333--2340}, organization = {IEEE}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
Setterfield, Timothy; Tweddle, Brent; Minier, Alain; Saenz-Otero, Alvar; Miller, David; Leonard, John Iterative Testing of Vision Based Navigation in Microgravity using SPHERES and VERTIGO aboard the ISS Unpublished 2014, (ISS Research & Development Conference). BibTeX | Tags: @unpublished{setterf14issrandd, title = {Iterative Testing of Vision Based Navigation in Microgravity using SPHERES and VERTIGO aboard the ISS}, author = {Timothy Setterfield and Brent Tweddle and Alain Minier and Alvar Saenz-Otero and David Miller and John Leonard}, year = {2014}, date = {2014-01-01}, note = {ISS Research & Development Conference}, keywords = {}, pubstate = {published}, tppubtype = {unpublished} } |
Cataldo, Giuseppe; Hseih, Wen-Ting; Huang, Wei-Chung; Moseley, Harvey S; Stevenson, Thomas R; Wollack, Edward J Micro-Spec: an integrated direct-detection spectrometer for far-infrared space telescopes Inproceedings Space Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave, pp. 91432C, International Society for Optics and Photonics 2014. BibTeX | Tags: @inproceedings{cataldo2014micro, title = {Micro-Spec: an integrated direct-detection spectrometer for far-infrared space telescopes}, author = {Giuseppe Cataldo and Wen-Ting Hseih and Wei-Chung Huang and Harvey S Moseley and Thomas R Stevenson and Edward J Wollack}, year = {2014}, date = {2014-01-01}, booktitle = {Space Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave}, volume = {9143}, pages = {91432C}, organization = {International Society for Optics and Photonics}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
Jewison, Christopher M; McCarthy, Bryan; Sternberg, David C; Strawser, Daniel; Fang, Cheng Resource aggregated reconfigurable control and risk-allocative path planning for on-orbit servicing and assembly of satellites Inproceedings AIAA Guidance, Navigation, and Control Conference, pp. 1289, 2014. BibTeX | Tags: @inproceedings{jewison2014resourcec, title = {Resource aggregated reconfigurable control and risk-allocative path planning for on-orbit servicing and assembly of satellites}, author = {Christopher M Jewison and Bryan McCarthy and David C Sternberg and Daniel Strawser and Cheng Fang}, year = {2014}, date = {2014-01-01}, booktitle = {AIAA Guidance, Navigation, and Control Conference}, pages = {1289}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
Hayhurst, Dustin Development and Implementation of the SPHERES-Slosh Experiment PhD Thesis 2014. BibTeX | Tags: @phdthesis{hayhurstDevelopmentImplementationSPHERESSlosh2014, title = {Development and Implementation of the SPHERES-Slosh Experiment}, author = {Dustin Hayhurst}, year = {2014}, date = {2014-01-01}, keywords = {}, pubstate = {published}, tppubtype = {phdthesis} } |
Jewison, Christopher Michael Reconfigurable Thruster Selection Algorithms for Aggregative Spacecraft Systems PhD Thesis 2014. @phdthesis{Jewison2014, title = {Reconfigurable Thruster Selection Algorithms for Aggregative Spacecraft Systems}, author = {Christopher Michael Jewison}, year = {2014}, date = {2014-01-01}, keywords = {★}, pubstate = {published}, tppubtype = {phdthesis} } |
Tweddle, Brent E; Saenz-Otero, Alvar Relative computer vision-based navigation for small inspection spacecraft Journal Article Journal of Guidance, Control, and Dynamics, 38 (5), pp. 969–978, 2014. BibTeX | Tags: @article{tweddle2014relativeb, title = {Relative computer vision-based navigation for small inspection spacecraft}, author = {Brent E Tweddle and Alvar Saenz-Otero}, year = {2014}, date = {2014-01-01}, journal = {Journal of Guidance, Control, and Dynamics}, volume = {38}, number = {5}, pages = {969--978}, publisher = {American Institute of Aeronautics and Astronautics}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
2013 |
Nag, Sreeja; Katz, Jacob G; Saenz-Otero, Alvar Collaborative gaming and competition for CS-STEM education using SPHERES Zero Robotics Journal Article Acta astronautica, 83 , pp. 145–174, 2013. BibTeX | Tags: @article{nag2013collaborativeb, title = {Collaborative gaming and competition for CS-STEM education using SPHERES Zero Robotics}, author = {Sreeja Nag and Jacob G Katz and Alvar Saenz-Otero}, year = {2013}, date = {2013-01-01}, journal = {Acta astronautica}, volume = {83}, pages = {145--174}, publisher = {Elsevier}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Richey, Christina Rae; Kinzer, RE; Cataldo, G; Wollack, EJ; Nuth, JA; Benford, DJ; Silverberg, RF; Rinehart, SA Optical properties of iron silicates in the infrared to millimeter as a function of wavelength and temperature Journal Article The Astrophysical Journal, 770 (1), pp. 46, 2013. BibTeX | Tags: @article{richey2013optical, title = {Optical properties of iron silicates in the infrared to millimeter as a function of wavelength and temperature}, author = {Christina Rae Richey and RE Kinzer and G Cataldo and EJ Wollack and JA Nuth and DJ Benford and RF Silverberg and SA Rinehart}, year = {2013}, date = {2013-01-01}, journal = {The Astrophysical Journal}, volume = {770}, number = {1}, pages = {46}, publisher = {IOP Publishing}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Lohmeyer, WQ; Cahoy, Kerri Space weather radiation effects on geostationary satellite solid-state power amplifiers Journal Article Space Weather, 11 (8), pp. 476–488, 2013. BibTeX | Tags: @article{lohmeyer2013space, title = {Space weather radiation effects on geostationary satellite solid-state power amplifiers}, author = {WQ Lohmeyer and Kerri Cahoy}, year = {2013}, date = {2013-01-01}, journal = {Space Weather}, volume = {11}, number = {8}, pages = {476--488}, publisher = {Wiley Online Library}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Minier, Alain Vision-Based Navigation for the Inspection of a Spinning Spacecraft PhD Thesis 2013. @phdthesis{Minier2013, title = {Vision-Based Navigation for the Inspection of a Spinning Spacecraft}, author = {Alain Minier}, year = {2013}, date = {2013-01-01}, keywords = {★}, pubstate = {published}, tppubtype = {phdthesis} } |
Tweddle, Brent Edward Computer Vision-Based Localization and Mapping of an Unknown, Uncooperative and Spinning Target for Spacecraft Proximity Operations PhD Thesis 2013. @phdthesis{Tweddle2013, title = {Computer Vision-Based Localization and Mapping of an Unknown, Uncooperative and Spinning Target for Spacecraft Proximity Operations}, author = {Brent Edward Tweddle}, year = {2013}, date = {2013-01-01}, keywords = {★}, pubstate = {published}, tppubtype = {phdthesis} } |
Fourie, Dehann; Tweddle, Brent; Ulrich, Steve; Otero, Alvar Saenz Vision-based relative navigation and control for autonomous spacecraft inspection of an unknown object Inproceedings AIAA Guidance, Navigation, and Control (GNC) Conference, pp. 4759, 2013. BibTeX | Tags: @inproceedings{fourie2013vision, title = {Vision-based relative navigation and control for autonomous spacecraft inspection of an unknown object}, author = {Dehann Fourie and Brent Tweddle and Steve Ulrich and Alvar Saenz Otero}, year = {2013}, date = {2013-01-01}, booktitle = {AIAA Guidance, Navigation, and Control (GNC) Conference}, pages = {4759}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
Nag, Sreeja; Katz, Jacob G; Saenz-Otero, Alvar Collaborative gaming and competition for CS-STEM education using SPHERES Zero Robotics Journal Article Acta astronautica, 83 , pp. 145–174, 2013. BibTeX | Tags: @article{nag2013collaborative, title = {Collaborative gaming and competition for CS-STEM education using SPHERES Zero Robotics}, author = {Sreeja Nag and Jacob G Katz and Alvar Saenz-Otero}, year = {2013}, date = {2013-01-01}, journal = {Acta astronautica}, volume = {83}, pages = {145--174}, publisher = {Elsevier}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Eslinger, Gregory J; Saenz-Otero, Alvar Electromagnetic formation flight control using dynamic programming Inproceedings Proc. of 36th Annual AAS Guid. Control Conf, pp. 17–32, 2013. BibTeX | Tags: @inproceedings{eslinger2013electromagnetic, title = {Electromagnetic formation flight control using dynamic programming}, author = {Gregory J Eslinger and Alvar Saenz-Otero}, year = {2013}, date = {2013-01-01}, booktitle = {Proc. of 36th Annual AAS Guid. Control Conf}, pages = {17--32}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
Sternberg, Mr David; Arestie, Mr Steven; Harris, Mr Robert; Ricci, Mr Nicola; Schaffner, Mr Michael; Shaw, Ms Margaret; Whitlock, Mr Caleb; Miller, David; Wise, Evan; Pong, Christopher; others, A Bottom-up Modeling Approach for the Profit Analysis of Cellularized Spacecraft Architectures Inproceedings IAC-13 Congress, 2013. BibTeX | Tags: @inproceedings{sternberg2013bottom, title = {A Bottom-up Modeling Approach for the Profit Analysis of Cellularized Spacecraft Architectures}, author = {Mr David Sternberg and Mr Steven Arestie and Mr Robert Harris and Mr Nicola Ricci and Mr Michael Schaffner and Ms Margaret Shaw and Mr Caleb Whitlock and David Miller and Evan Wise and Christopher Pong and others}, year = {2013}, date = {2013-01-01}, booktitle = {IAC-13 Congress}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
Wise, Evan D; Pong, Christopher M; Miller, David; Cahoy, Kerri; Nguyen, Tam T A dual-spinning, three-axis-stabilized cubesat for earth observations Inproceedings AIAA Guidance, Navigation, and Control (GNC) Conference, pp. 4716, 2013. BibTeX | Tags: @inproceedings{wise2013dual, title = {A dual-spinning, three-axis-stabilized cubesat for earth observations}, author = {Evan D Wise and Christopher M Pong and David Miller and Kerri Cahoy and Tam T Nguyen}, year = {2013}, date = {2013-01-01}, booktitle = {AIAA Guidance, Navigation, and Control (GNC) Conference}, pages = {4716}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
Pong, C; Miller, D Angular rate estimation from geomagnetic field measurements and observability singularity avoidance during detumbling and sun acquisition Inproceedings AAS Guidance and Control Conference, Breckenridge, CO, 2013. BibTeX | Tags: @inproceedings{pong2013angular, title = {Angular rate estimation from geomagnetic field measurements and observability singularity avoidance during detumbling and sun acquisition}, author = {C Pong and D Miller}, year = {2013}, date = {2013-01-01}, booktitle = {AAS Guidance and Control Conference, Breckenridge, CO}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
Kerzhner, Aleksandr A; Ingham, Michel D; Khan, Mohammed O; Ramirez, Jaime; Luis, Javier De; Hollman, Jeremy; Arestie, Steven; Sternberg, David Architecting cellularized space systems using model-based design exploration Inproceedings AIAA SPACE 2013 Conference and Exposition, pp. 5371, 2013. BibTeX | Tags: @inproceedings{kerzhner2013architecting, title = {Architecting cellularized space systems using model-based design exploration}, author = {Aleksandr A Kerzhner and Michel D Ingham and Mohammed O Khan and Jaime Ramirez and Javier De Luis and Jeremy Hollman and Steven Arestie and David Sternberg}, year = {2013}, date = {2013-01-01}, booktitle = {AIAA SPACE 2013 Conference and Exposition}, pages = {5371}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
Lohmeyer, Whitney Q; Cahoy, Kerri; Liu, Shiyang Causal relationships between solar proton events and single event upsets for communication satellites Inproceedings Institute of Electrical and Electronics Engineers 2013. BibTeX | Tags: @inproceedings{lohmeyer2013causal, title = {Causal relationships between solar proton events and single event upsets for communication satellites}, author = {Whitney Q Lohmeyer and Kerri Cahoy and Shiyang Liu}, year = {2013}, date = {2013-01-01}, organization = {Institute of Electrical and Electronics Engineers}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
Fourie, Dehann; Tweddle, Brent; Ulrich, Steve; Otero, Alvar Saenz Vision-based relative navigation and control for autonomous spacecraft inspection of an unknown object Inproceedings AIAA Guidance, Navigation, and Control (GNC) Conference, pp. 4759, 2013. BibTeX | Tags: @inproceedings{fourie2013visionb, title = {Vision-based relative navigation and control for autonomous spacecraft inspection of an unknown object}, author = {Dehann Fourie and Brent Tweddle and Steve Ulrich and Alvar Saenz Otero}, year = {2013}, date = {2013-01-01}, booktitle = {AIAA Guidance, Navigation, and Control (GNC) Conference}, pages = {4759}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
Jyothindran, Vishnu A Vision Based Control System for Autonomous Rendezvous and Capture of a Mars Orbital Sample PhD Thesis 2013. BibTeX | Tags: @phdthesis{Jyothindran2013, title = {A Vision Based Control System for Autonomous Rendezvous and Capture of a Mars Orbital Sample}, author = {Vishnu Jyothindran}, year = {2013}, date = {2013-01-01}, keywords = {}, pubstate = {published}, tppubtype = {phdthesis} } |
2012 |
Makowka, Konrad Vision Based Navigation with an Experimental Satellite Testbed PhD Thesis 2012. BibTeX | Tags: @phdthesis{Makowka2012, title = {Vision Based Navigation with an Experimental Satellite Testbed}, author = {Konrad Makowka}, year = {2012}, date = {2012-01-01}, keywords = {}, pubstate = {published}, tppubtype = {phdthesis} } |
Cataldo, Giuseppe; Beall, James A; Cho, Hsiao-Mei; McAndrew, Brendan; Niemack, Michael D; Wollack, Edward J Infrared dielectric properties of low-stress silicon nitride Journal Article Optics letters, 37 (20), pp. 4200–4202, 2012. BibTeX | Tags: @article{cataldo2012infrared, title = {Infrared dielectric properties of low-stress silicon nitride}, author = {Giuseppe Cataldo and James A Beall and Hsiao-Mei Cho and Brendan McAndrew and Michael D Niemack and Edward J Wollack}, year = {2012}, date = {2012-01-01}, journal = {Optics letters}, volume = {37}, number = {20}, pages = {4200--4202}, publisher = {Optical Society of America}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Nag, Sreeja Collaborative and Educational Crowdsourcing of Spaceflight Software Using SPHERES Zero Robotics PhD Thesis 2012. @phdthesis{nagCollaborativeEducationalCrowdsourcing2012, title = {Collaborative and Educational Crowdsourcing of Spaceflight Software Using SPHERES Zero Robotics}, author = {Sreeja Nag}, doi = {10.4018/978-1-5225-8362-2.ch036}, year = {2012}, date = {2012-01-01}, number = {June}, keywords = {}, pubstate = {published}, tppubtype = {phdthesis} } |
O'Connor, Michael C Design and Implementation of Small Satellite Inspection Missions PhD Thesis 2012, ISBN: 9786026258076. Abstract | BibTeX | Tags: pronunciation, similar sounds, teaching media, ★ @phdthesis{oconnorDesignImplementationSmall2012, title = {Design and Implementation of Small Satellite Inspection Missions}, author = {Michael C O'Connor}, isbn = {9786026258076}, year = {2012}, date = {2012-01-01}, volume = {66}, number = {June}, abstract = {textbullet גרינבלט, י. (2012). ענף הקיווי: תמונת מצב 2012, עלון הנוטע שה``מ, מחוז צפון, משרד החקלאות.}, keywords = {pronunciation, similar sounds, teaching media, ★}, pubstate = {published}, tppubtype = {phdthesis} } textbullet גרינבלט, י. (2012). ענף הקיווי: תמונת מצב 2012, עלון הנוטע שה``מ, מחוז צפון, משרד החקלאות. |
Thai, Sonny Collaborative Editor Environments for Player Programs PhD Thesis 2012. @phdthesis{thaiCollaborativeEditorEnvironments2012, title = {Collaborative Editor Environments for Player Programs}, author = {Sonny Thai}, year = {2012}, date = {2012-01-01}, number = {May}, abstract = {Player programming competitions are becoming a more popular way of introducing students to programming as well as allowing more experienced coders to hone their skills. In these competitions, teams of individuals must work together to produce a software project that will compete against other teams' projects in a well defined test. Collaboration is crucial in the overall learning experience and in determining the quality of the project. Although there are no standardized set of collaborative tools that exist for player programming IDEs, this paper documents the steps taken to investigate the ideal collaborative tools for editing player programs. These tools are a combination of frontend and backend features. Initial testing shows positive feedback from users of older systems. Future work consists of larger scale testing to perfect the standardized collaborative toolset.}, keywords = {}, pubstate = {published}, tppubtype = {phdthesis} } Player programming competitions are becoming a more popular way of introducing students to programming as well as allowing more experienced coders to hone their skills. In these competitions, teams of individuals must work together to produce a software project that will compete against other teams' projects in a well defined test. Collaboration is crucial in the overall learning experience and in determining the quality of the project. Although there are no standardized set of collaborative tools that exist for player programming IDEs, this paper documents the steps taken to investigate the ideal collaborative tools for editing player programs. These tools are a combination of frontend and backend features. Initial testing shows positive feedback from users of older systems. Future work consists of larger scale testing to perfect the standardized collaborative toolset. |
Tweddle, Brent E; Muggler, E; Saenz-Otero, Alvar; Miller, David W The SPHERES VERTIGO Goggles: Vision based mapping and localization onboard the International Space Station Inproceedings Proc. iSAIRAS, 2012. BibTeX | Tags: @inproceedings{tweddle2012spheres, title = {The SPHERES VERTIGO Goggles: Vision based mapping and localization onboard the International Space Station}, author = {Brent E Tweddle and E Muggler and Alvar Saenz-Otero and David W Miller}, year = {2012}, date = {2012-01-01}, booktitle = {Proc. iSAIRAS}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
O'Connor, Michael; Tweddle, Brent; Katz, Jacob; Saenz-Otero, Alvar; Miller, David; Makowka, Konrad Visual-inertial estimation and control for inspection of a tumbling spacecraft: experimental results from the international space station Inproceedings AIAA guidance, navigation, and control conference, pp. 4701, 2012. BibTeX | Tags: @inproceedings{o2012visual, title = {Visual-inertial estimation and control for inspection of a tumbling spacecraft: experimental results from the international space station}, author = {Michael O'Connor and Brent Tweddle and Jacob Katz and Alvar Saenz-Otero and David Miller and Konrad Makowka}, year = {2012}, date = {2012-01-01}, booktitle = {AIAA guidance, navigation, and control conference}, pages = {4701}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
Nag, Sreeja; Heffan, Ira; Saenz-Otero, Alvar; Lydon, Mike SPHERES Zero Robotics software development: Lessons on crowdsourcing and collaborative competition Inproceedings Aerospace Conference, 2012 IEEE, pp. 1–17, IEEE 2012. BibTeX | Tags: @inproceedings{nag2012spheres, title = {SPHERES Zero Robotics software development: Lessons on crowdsourcing and collaborative competition}, author = {Sreeja Nag and Ira Heffan and Alvar Saenz-Otero and Mike Lydon}, year = {2012}, date = {2012-01-01}, booktitle = {Aerospace Conference, 2012 IEEE}, pages = {1--17}, organization = {IEEE}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
Chiasson, Thomas Michael Modeling the Characteristics of Propulsion Systems Providing Less Than 10 N Thrust PhD Thesis 2012, ISBN: 7000102004. @phdthesis{chiassonModelingCharacteristicsPropulsion2012, title = {Modeling the Characteristics of Propulsion Systems Providing Less Than 10 N Thrust}, author = {Thomas Michael Chiasson}, isbn = {7000102004}, year = {2012}, date = {2012-01-01}, volume = {Aeronautic}, number = {May}, abstract = {A methodology has been created that estimates the characteristics and mass breakout of a propulsion system providing less than 10 N of thrust, including thruster, propellant, propellant management, and supporting power system. The methodology allows the user to choose between 18 di erent types of propulsion and propellant, including chemical and electric thrusters. Thruster mass and characteristics are es- timated using a database of historical speci cations, and the rest of the propulsion system is estimated using standard design equations. Description and analysis of the methodology, including validation and example applications, are included. A methodology has been created that estimates the characteristics and mass breakout of a propulsion system providing less than 10 N of thrust, including thruster, pro- pellant, propellant management, and supporting power system. The methodology allows the user to choose between 18 di erent types of propulsion and propellant, including chemical and electric thrusters. Thruster mass and characteristics are es- timated using a database of historical speci cations, and the rest of the propulsion system is estimated using standard design equations. Description and analysis of the methodology, including validation and example applications, are included.}, keywords = {}, pubstate = {published}, tppubtype = {phdthesis} } A methodology has been created that estimates the characteristics and mass breakout of a propulsion system providing less than 10 N of thrust, including thruster, propellant, propellant management, and supporting power system. The methodology allows the user to choose between 18 di erent types of propulsion and propellant, including chemical and electric thrusters. Thruster mass and characteristics are es- timated using a database of historical speci cations, and the rest of the propulsion system is estimated using standard design equations. Description and analysis of the methodology, including validation and example applications, are included. A methodology has been created that estimates the characteristics and mass breakout of a propulsion system providing less than 10 N of thrust, including thruster, pro- pellant, propellant management, and supporting power system. The methodology allows the user to choose between 18 di erent types of propulsion and propellant, including chemical and electric thrusters. Thruster mass and characteristics are es- timated using a database of historical speci cations, and the rest of the propulsion system is estimated using standard design equations. Description and analysis of the methodology, including validation and example applications, are included. |
Daspit, Ryan M Performance Characterization and Optimization of a Diverging Cusped Field Thruster with a Calibrated Counter-Weighted Millinewton Thrust Stand By PhD Thesis 2012. BibTeX | Tags: @phdthesis{Daspit2012, title = {Performance Characterization and Optimization of a Diverging Cusped Field Thruster with a Calibrated Counter-Weighted Millinewton Thrust Stand By}, author = {Ryan M Daspit}, year = {2012}, date = {2012-01-01}, keywords = {}, pubstate = {published}, tppubtype = {phdthesis} } |
Lohmeyer, W; Cahoy, Kerri; Baker, Daniel N Correlation of GEO communication satellite anomalies and space weather phenomena: improved satellite performance and risk mitigation Inproceedings 30th AIAA International Communications Satellite Systems Conference (ICSSC), Ottawa, Canada, 2012. BibTeX | Tags: @inproceedings{lohmeyer2012correlation, title = {Correlation of GEO communication satellite anomalies and space weather phenomena: improved satellite performance and risk mitigation}, author = {W Lohmeyer and Kerri Cahoy and Daniel N Baker}, year = {2012}, date = {2012-01-01}, booktitle = {30th AIAA International Communications Satellite Systems Conference (ICSSC), Ottawa, Canada}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
Cahoy, Kerri; Marinan, Anne; Kerr, Caitlin; Cheng, Kezi; Jamil, Sara CubeSat deformable mirror demonstration Inproceedings Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave, pp. 84424F, International Society for Optics and Photonics 2012. BibTeX | Tags: @inproceedings{cahoy2012cubesat, title = {CubeSat deformable mirror demonstration}, author = {Kerri Cahoy and Anne Marinan and Caitlin Kerr and Kezi Cheng and Sara Jamil}, year = {2012}, date = {2012-01-01}, booktitle = {Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave}, volume = {8442}, pages = {84424F}, organization = {International Society for Optics and Photonics}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
`e, Denis Defr; Stark, C; Cahoy, K; Beerer, I Direct imaging of exoEarths embedded in clumpy debris disks Inproceedings Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave, pp. 84420M, International Society for Optics and Photonics 2012. BibTeX | Tags: @inproceedings{defrere2012direct, title = {Direct imaging of exoEarths embedded in clumpy debris disks}, author = {Denis Defr{`e}re and C Stark and K Cahoy and I Beerer}, year = {2012}, date = {2012-01-01}, booktitle = {Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave}, volume = {8442}, pages = {84420M}, organization = {International Society for Optics and Photonics}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
Knapp, M; Smith, M; Pong, C; Nash, J; Seager, S ExoplanetSat: High Precision Photometry for Exoplanet Transit Detections in a 3U CubeSat Inproceedings 63rd International Astronautical Congress, pp. 1–12, 2012. BibTeX | Tags: @inproceedings{knapp2012exoplanetsat, title = {ExoplanetSat: High Precision Photometry for Exoplanet Transit Detections in a 3U CubeSat}, author = {M Knapp and M Smith and C Pong and J Nash and S Seager}, year = {2012}, date = {2012-01-01}, booktitle = {63rd International Astronautical Congress}, pages = {1--12}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
Pong, Christopher; Knutson, Matthew; Miller, David; Seager, Sara; Lim, Sungyung; Henderson, Timothy; Murphy, Shawn High-precision pointing and attitude determination and control on exoplanetsat Inproceedings AIAA Guidance, Navigation, and Control Conference, pp. 4783, 2012. BibTeX | Tags: @inproceedings{pong2012high, title = {High-precision pointing and attitude determination and control on exoplanetsat}, author = {Christopher Pong and Matthew Knutson and David Miller and Sara Seager and Sungyung Lim and Timothy Henderson and Shawn Murphy}, year = {2012}, date = {2012-01-01}, booktitle = {AIAA Guidance, Navigation, and Control Conference}, pages = {4783}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
Nag, Sreeja; Heffan, Ira; Saenz-Otero, Alvar; Lydon, Mike SPHERES Zero Robotics software development: Lessons on crowdsourcing and collaborative competition Inproceedings Aerospace Conference, 2012 IEEE, pp. 1–17, IEEE 2012. BibTeX | Tags: @inproceedings{nag2012spheresb, title = {SPHERES Zero Robotics software development: Lessons on crowdsourcing and collaborative competition}, author = {Sreeja Nag and Ira Heffan and Alvar Saenz-Otero and Mike Lydon}, year = {2012}, date = {2012-01-01}, booktitle = {Aerospace Conference, 2012 IEEE}, pages = {1--17}, organization = {IEEE}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
Tweddle, Brent E; Muggler, E; Saenz-Otero, Alvar; Miller, David W The SPHERES VERTIGO Goggles: Vision based mapping and localization onboard the International Space Station Inproceedings Proc. iSAIRAS, 2012. BibTeX | Tags: @inproceedings{tweddle2012spheresb, title = {The SPHERES VERTIGO Goggles: Vision based mapping and localization onboard the International Space Station}, author = {Brent E Tweddle and E Muggler and Alvar Saenz-Otero and David W Miller}, year = {2012}, date = {2012-01-01}, booktitle = {Proc. iSAIRAS}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
O'Connor, Michael; Tweddle, Brent; Katz, Jacob; Saenz-Otero, Alvar; Miller, David; Makowka, Konrad Visual-inertial estimation and control for inspection of a tumbling spacecraft: experimental results from the international space station Inproceedings AIAA guidance, navigation, and control conference, pp. 4701, 2012. BibTeX | Tags: @inproceedings{o2012visualb, title = {Visual-inertial estimation and control for inspection of a tumbling spacecraft: experimental results from the international space station}, author = {Michael O'Connor and Brent Tweddle and Jacob Katz and Alvar Saenz-Otero and David Miller and Konrad Makowka}, year = {2012}, date = {2012-01-01}, booktitle = {AIAA guidance, navigation, and control conference}, pages = {4701}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
Knutson, Matthew Fast Star Tracker Algorithm for High Performance CubeSat with Air Bearing Validation PhD Thesis 2012, ISBN: 7000102004. @phdthesis{knutsonFastStarTracker2012, title = {Fast Star Tracker Algorithm for High Performance CubeSat with Air Bearing Validation}, author = {Matthew Knutson}, isbn = {7000102004}, year = {2012}, date = {2012-01-01}, number = {June}, abstract = {State of the art CubeSats such as ExoplanetSat require pointing precision for the science payload on the order of arcseconds. ExoplanetSat uses dual stage control to achieve the pointing requirement. Reaction wheels provide coarse satellite attitude control while a high bandwidth piezoelectric stage performs fine optical stabilization. The optical sensor provides star images from which a centroiding algorithm estimates the star locations on the optical focal plane. The star locations are used for both the optical control loop and satellite attitude determination. The centroiding algorithm requires a short processing time to maximize the bandwidth of the fine control loop. This thesis proposes a new fast centroiding algorithm based on centroid window tracking. The tracking algorithm utilizes centroid data from previous image frames to estimate the motion of the optical sensor. The estimated motion provides a prediction of the current centroid locations. An image window is centered at each predicted star location. A center of mass calculation is performed on the image window to determine the centroid location. This proposed algorithm is shown to reduce the computation time by a factor of 10 with a novel air bearing hardware testbed. This thesis also develops a high fidelity optical imager model in MATLAB Simulink. This model can be used to test centroiding algorithms and to simulate optical systems in a spacecraft pointing simulator. The model is validated with the air bearing testbed. Furthermore, the model is autocoded to C-code which is compatible with a rapid Monte Carlo analysis framework.}, keywords = {}, pubstate = {published}, tppubtype = {phdthesis} } State of the art CubeSats such as ExoplanetSat require pointing precision for the science payload on the order of arcseconds. ExoplanetSat uses dual stage control to achieve the pointing requirement. Reaction wheels provide coarse satellite attitude control while a high bandwidth piezoelectric stage performs fine optical stabilization. The optical sensor provides star images from which a centroiding algorithm estimates the star locations on the optical focal plane. The star locations are used for both the optical control loop and satellite attitude determination. The centroiding algorithm requires a short processing time to maximize the bandwidth of the fine control loop. This thesis proposes a new fast centroiding algorithm based on centroid window tracking. The tracking algorithm utilizes centroid data from previous image frames to estimate the motion of the optical sensor. The estimated motion provides a prediction of the current centroid locations. An image window is centered at each predicted star location. A center of mass calculation is performed on the image window to determine the centroid location. This proposed algorithm is shown to reduce the computation time by a factor of 10 with a novel air bearing hardware testbed. This thesis also develops a high fidelity optical imager model in MATLAB Simulink. This model can be used to test centroiding algorithms and to simulate optical systems in a spacecraft pointing simulator. The model is validated with the air bearing testbed. Furthermore, the model is autocoded to C-code which is compatible with a rapid Monte Carlo analysis framework. |
Lee, Sunghak Statistical Risk Estimation for Communication System Design PhD Thesis 2012, ISSN: 1098-6596. Abstract | Links | BibTeX | Tags: Axial crushing, Energy absorption, icle, Impact absorption energy, Origami pattern, Space frame, Thin-walled tubes, Triggering dent @phdthesis{leeStatisticalRiskEstimation2012, title = {Statistical Risk Estimation for Communication System Design}, author = {Sunghak Lee}, doi = {10.1017/CBO9781107415324.004}, issn = {1098-6596}, year = {2012}, date = {2012-01-01}, volume = {53}, number = {9}, abstract = {Predicting the binding mode of flexible polypeptides to proteins is an important task that falls outside the domain of applicability of most small molecule and protein-protein docking tools. Here, we test the small molecule flexible ligand docking program Glide on a set of 19 non-$alpha$-helical peptides and systematically improve pose prediction accuracy by enhancing Glide sampling for flexible polypeptides. In addition, scoring of the poses was improved by post-processing with physics-based implicit solvent MM- GBSA calculations. Using the best RMSD among the top 10 scoring poses as a metric, the success rate (RMSD $łeq$ 2.0 AA for the interface backbone atoms) increased from 21% with default Glide SP settings to 58% with the enhanced peptide sampling and scoring protocol in the case of redocking to the native protein structure. This approaches the accuracy of the recently developed Rosetta FlexPepDock method (63% success for these 19 peptides) while being over 100 times faster. Cross-docking was performed for a subset of cases where an unbound receptor structure was available, and in that case, 40% of peptides were docked successfully. We analyze the results and find that the optimized polypeptide protocol is most accurate for extended peptides of limited size and number of formal charges, defining a domain of applicability for this approach.}, keywords = {Axial crushing, Energy absorption, icle, Impact absorption energy, Origami pattern, Space frame, Thin-walled tubes, Triggering dent}, pubstate = {published}, tppubtype = {phdthesis} } Predicting the binding mode of flexible polypeptides to proteins is an important task that falls outside the domain of applicability of most small molecule and protein-protein docking tools. Here, we test the small molecule flexible ligand docking program Glide on a set of 19 non-$alpha$-helical peptides and systematically improve pose prediction accuracy by enhancing Glide sampling for flexible polypeptides. In addition, scoring of the poses was improved by post-processing with physics-based implicit solvent MM- GBSA calculations. Using the best RMSD among the top 10 scoring poses as a metric, the success rate (RMSD $łeq$ 2.0 AA for the interface backbone atoms) increased from 21% with default Glide SP settings to 58% with the enhanced peptide sampling and scoring protocol in the case of redocking to the native protein structure. This approaches the accuracy of the recently developed Rosetta FlexPepDock method (63% success for these 19 peptides) while being over 100 times faster. Cross-docking was performed for a subset of cases where an unbound receptor structure was available, and in that case, 40% of peptides were docked successfully. We analyze the results and find that the optimized polypeptide protocol is most accurate for extended peptides of limited size and number of formal charges, defining a domain of applicability for this approach. |
2011 |
Martinez-Sanchez, M Radiation of VLF/ELF Waves from a Magnetospheric Tether PhD Thesis 2011. @phdthesis{martinez-sanchezRadiationVLFELF2011, title = {Radiation of VLF/ELF Waves from a Magnetospheric Tether}, author = {M {Martinez-Sanchez}}, year = {2011}, date = {2011-01-01}, number = {June}, abstract = {The high energy particles of the Van Allen belts coming from cosmic rays, solar storms, high altitude nuclear explosions (HANEs) and other processes represent a significant danger to humans and spacecraft operating in those regions, as well as an obstacle to exploration and development of space technologies. The "Radiation Belt Remediation" (RBR) concept has been proposed as a way to try to solve this problem through VLF/ELF transmissions in the ionosphere, which will create a pitch-angle scattering of these energetic particles with some of them falling into their loss cone, thus reentering the Earth. The aim of this thesis is to develop an analytical model of propagation and radiation of Electromagnetic Ion Cyclotron Waves (EMIC) from a high-voltage magnetospheric tether, which are the waves proposed to scatter protons. The plasma is anisotropic due to the external Earth's magnetic field and it is assumed to have sufficiently low density, temperature and degree of ionization so that collisions and thermal velocities can be neglected. An asymptotic analysis is developed to calculate the fields and power flux radiated by the tether that reach a specified observation point located in the far-field region. The effect of the antenna-plasma interaction in the far-field region is studied by adding to the conventional triangular source current distribution along the antenna a radial current arising from the sheath region. The near-field case and the radiation impedance are as well studied. Finally, the results are analyzed and compared with previous models for limiting cases.}, keywords = {}, pubstate = {published}, tppubtype = {phdthesis} } The high energy particles of the Van Allen belts coming from cosmic rays, solar storms, high altitude nuclear explosions (HANEs) and other processes represent a significant danger to humans and spacecraft operating in those regions, as well as an obstacle to exploration and development of space technologies. The "Radiation Belt Remediation" (RBR) concept has been proposed as a way to try to solve this problem through VLF/ELF transmissions in the ionosphere, which will create a pitch-angle scattering of these energetic particles with some of them falling into their loss cone, thus reentering the Earth. The aim of this thesis is to develop an analytical model of propagation and radiation of Electromagnetic Ion Cyclotron Waves (EMIC) from a high-voltage magnetospheric tether, which are the waves proposed to scatter protons. The plasma is anisotropic due to the external Earth's magnetic field and it is assumed to have sufficiently low density, temperature and degree of ionization so that collisions and thermal velocities can be neglected. An asymptotic analysis is developed to calculate the fields and power flux radiated by the tether that reach a specified observation point located in the far-field region. The effect of the antenna-plasma interaction in the far-field region is studied by adding to the conventional triangular source current distribution along the antenna a radial current arising from the sheath region. The near-field case and the radiation impedance are as well studied. Finally, the results are analyzed and compared with previous models for limiting cases. |
Legge, Robert S; Lozano, Paulo C Electrospray propulsion based on emitters microfabricated in porous metals Journal Article Journal of Propulsion and Power, 27 (2), pp. 485–495, 2011. BibTeX | Tags: @article{legge2011electrospray, title = {Electrospray propulsion based on emitters microfabricated in porous metals}, author = {Robert S Legge and Paulo C Lozano}, year = {2011}, date = {2011-01-01}, journal = {Journal of Propulsion and Power}, volume = {27}, number = {2}, pages = {485--495}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Rinehart, Stephen A; Benford, Dominic J; Cataldo, Giuseppe; Dwek, Eliahu; Henry, Ross; Jr, Raymond Kinzer E; Nuth, Joseph; Silverberg, Robert; Wheeler, Caleb; Wollack, Edward Measuring the optical properties of astrophysical dust analogues: instrumentation and methods Journal Article Applied optics, 50 (21), pp. 4115–4123, 2011. BibTeX | Tags: @article{rinehart2011measuring, title = {Measuring the optical properties of astrophysical dust analogues: instrumentation and methods}, author = {Stephen A Rinehart and Dominic J Benford and Giuseppe Cataldo and Eliahu Dwek and Ross Henry and Raymond E Kinzer Jr and Joseph Nuth and Robert Silverberg and Caleb Wheeler and Edward Wollack}, year = {2011}, date = {2011-01-01}, journal = {Applied optics}, volume = {50}, number = {21}, pages = {4115--4123}, publisher = {Optical Society of America}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
McCormack, Mm Trade Study and Application of Symbiotic Software and Hardware Fault-Tolerance on a Microcontroller-Based Avionics System PhD Thesis 2011, ISBN: 7000102004. BibTeX | Tags: @phdthesis{mccormackTradeStudyApplication2011, title = {Trade Study and Application of Symbiotic Software and Hardware Fault-Tolerance on a Microcontroller-Based Avionics System}, author = {Mm McCormack}, isbn = {7000102004}, year = {2011}, date = {2011-01-01}, number = {June}, keywords = {}, pubstate = {published}, tppubtype = {phdthesis} } |
Nothnagel, Sarah L Development of a Cold Gas Propulsion System for the TALARIS Hopper By PhD Thesis 2011. BibTeX | Tags: @phdthesis{nothnagelDevelopmentColdGas2011, title = {Development of a Cold Gas Propulsion System for the TALARIS Hopper By}, author = {Sarah L Nothnagel}, year = {2011}, date = {2011-01-01}, number = {June}, keywords = {}, pubstate = {published}, tppubtype = {phdthesis} } |