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Publications

 

2017

Brannan, J. C. and C. R. Carignan., “Interaction of a Robotic Servicing Vehicle with Satellite Modes During Capture,” in AIAA Modeling and Simulation Technologies Conference, No. AIAA 2017-1555. Grapevine, TX: AIAA, Jan 2017.

 

2016

Gaylor, D.E., Ceniceros, A., Anderson, J.T.,  Pinon, E., “Resident Space Object Feature Identification and Attitude Detection using Hierarchical Mixtures of Experts,” Journal of Guidance, Control and Dynamics, Special Issue  on Space Domain Awareness, submitted Feb 2016.

Hur-Diaz, S. and Mathur, R., “Assessing Orbit Determination Requirement with Unscented Transformation: Case Study of a Lunar CubeSat Mission,” ICATT 2016, Darmstadt, Germany, March 13-17, 2016.

Mathur, R., “Low Thrust Trajectory Design and Optimization: Case Study of a Lunar CubeSat Mission,” ICATT 2016, Darmstadt, Germany, March 13-17, 2016.

Voboril, C.,  S. Winkler,  K. Larson, and D. Freesland, “Solar Flare Degradation of GPS Navigation at GEO,” AAS-16-073, AAS GN&C Conference, Breckenridge, CO, Feb. 5-10, 2016.

Winternitz, L., Bamford. W., Price, S., Carpenter, R., Long, A., Faramahnd, M., “Global Positioning System Navigation Above 76,000 KM for NASA’s Magnetospheric Multiscale Mission”, AAS GN&C Conference, Breckenridge, CO., 2016

2015

Ceniceros, A., Gaylor, D.E., Anderson, J.T.,  Pinon, E., Dao, P., Rast, R., “Comparison of BRDF-Predicted and Observed Light Curves of GEO Satellites,” Advanced Maui Optical and Space Surveillance Technologies Conference, Maui, HI, September 2015.

Fusco, J., Swei, S.S.M., Nakamura, R. "Sun Safe Mode Controller Design for LADEE", AIAA Guidance, Navigation, and Control Conference, AIAA SciTech, (AIAA 2015-2011).

Nehrenz, M. and Sorgenfrei, M., "A Comparison of Thruster Implementation Strategies for a Deep Space Nanosatellite," Proc. of the AIAA Guidance, Navigation, and Control Conference, Kissimmee, Florida, January 2015.

Nehrenz, M. and Sorgenfrei, M., "On the Development of Spacecraft Operating Modes for a Deep Space CubeSat," Proc. of the AIAA Space Conference, Pasadena, California, August 2015.
 

2014

Brown, A., Ruschmann, M., Duffy, B., Ward, L., Hur-Diaz, S., Ferguson, E., and Stewart, S. “Simulated Annealing Maneuver Planner For Cluster Flight.” Proceedings 24th International Symposium on Space Flight Dynamics - 24th ISSFD. Laurel, MD, May 2014.

Chapel, J., Stancliffe, D., Bevacqua, T., Winkler, S., Clapp, B., Rood, T., Gaylor, D., Freesland, D., Krimchansky, A., “Guidance, Navigation, and Control Performance for the GOES-R Spacecraft,” GNC 2014: 9th International ESA Conference on Guidance, Navigation & Control Systems, Oporto, Portugal, June 2014

Duffy, B., Brown, A., Ruschmann, M., and Ward, L. “Scatter Strategies for Cluster Flight.” 24th International Symposium on Space Flight Dynamics. Laurel, MD, May 2014.

Gaylor, D.E., Anderson, J.,  “Use of Hierarchical Mixtures of Experts to Detect Resident Space Object Attitude,” Advanced Maui Optical and Space Surveillance Technologies Conference, Maui, HI, September 2014.

Hur-Diaz, S. and O’Connor, B. “Cluster Flight Application on System F6.” 24th International Symposium on Space Flight Dynamics. Laurel, MD, May 2014.

Ruschmann, M., Duffy, B., de la Torre, R., and Hur-Diaz, S. “Efficient Station Keeping for Cluster Flight.” 24th International Symposium on Space Flight Dynamics. Laurel, MD, May 2014.

Schmidt, J., Phillips, M., and Ruschmann, M. “Satellite Cluster Flight Design Considerations,” 24th International Symposium on Space Flight Dynamics, Laurel, MD, May 2014.

Stewart, S., Ward, L., and Strand, S. "Distributed GN&C Flight Software Simulation for Spacecraft Cluster Flight.” AAS Guidance Navigation and Control Conference. Breckenridge, CO, Feb. 2014.

Zelensky, N., F. Lemoine, D. Chinn, S. Melachroinos, B. Beckley, J. Beall, and O. Bordyugov, "Estimated SLR station position and network frame sensitivity to time-varying gravity", J. Geodesy 88(6): 517-537,2014.

2013

Anderson, J.T., Gaylor, D.E. Idle, D., Russell, R.P., Biria, A., Schadegg, M., "RSO Feature Identification Using Hierarchical Mixtures of Experts," Advanced Maui Optical and Space Surveillance Technologies Conference, Maui, HI, September 2013.

M. Gonzalez, D. Zanon, and R. Mathur, "Distributed Internet-enabled Simulation/Testbed Architecture", Proceedings of the AAS/AIAA Astrodynamics Specialist Conference, Hilton Head SC, August 2013.

Hur-Diaz, S., Ruschmann, M., Heyne, M., and Phillips, M. "Computing Collision Probability Using Linear Covariance and Unscented Transforms." AIAA Guidance, Navigation, and Control and Co-located Conferences and AIAA Infotech@Aerospace 2013. Boston, MA, 19-22 Aug 2013.

Larson, K., Gaylor, D., Winkler, S., “Worst Case GPS Constellation for Testing Navigation at Geosynchronous Orbit for GOES-R,” AAS 13-064, 36th Annual Guidance and Control Conference, Breckenridge, CO, February 2013.

O’Connor, B., Brown A., Gordon K., Schmidt J., and de la Torre R. “A Service-based Architecture for Automated Guidance, Navigation and Control Flight Software."  2013 Workshop on Spacecraft Flight Software. Pasadena CA, 10-12 Dec 2013.

Phillips, M., Hur-Diaz, S., "On-board Estimation of Collision Probability for Cluster Flight," Paper ASS 13-357 presented at the AAS/AIAA Space Flight Mechanics Meeting, Lihue, HI, February 10-14, 2013.

R. Mathur, ?An Analytical Approach to Computing Step Sizes for Finite-Difference Derivatives,? Proceedings of the AAS/AIAA Astrodynamics Specialist Conference, Hilton Head SC, August 2013.

Schmidt, J., Phillips, M., "A Distributed, Redundant Navigation and Fault Detection System for DARPA System F6," Paper AIAA 13-4963 presented at the AIAA Guidance, Navigation, and Control Conference, Boston, MA, August 19-22, 2013.

2012

Barbee, B., Alfano, S., Pinon, E., Gold, K., Gaylor, D., "Design of Spacecraft Missions to Remove Multiple Orbital Debris Objects," AAS 12-017, AAS Guidance and Control Conference, Breckenridge, CO, February 2012.

Duffy, B., “Analytical Methods and Perturbation Theory for the Elliptic Restricted Three-Body Problem of Astrodynamics,” PhD Dissertation, The George Washington University, Washington, DC, May 20, 2012.

Duffy, B. and Chichka, D., “Canonical Perturbation Theory for the Elliptic Restricted-Three-Body Problem," AIAA/AAS Space Flight Mechanics Meeting, Charleston, SC, Jan. 29 - Feb. 2, 2012.

Galante, Joseph, John Van Eepoel, N. Gill, M. Gonzalez, A. Hyslop, and B. Patrick. "Pose Measurement Performance of the Argon Relative
Navigation Sensor Suite in Simulated Flight Conditions." In AIAA Guidance, Navigation, and Control Conference. Reston, VA: AIAA, 2012.

Lemoine, F.,D. Chinn, K. Le Bail, N. Zelensky, R. Ray, B. Beckley, J. Beall,“Improved DORIS Reference Frame Solutions from NASA GSFC”,Workshop of the International DORIS Service, September 25, 2012, Venice, Italy.

Lulich, Tyler D., Bamford, William A., Winternitz, Luke M.B., Price, Samuel R., "Results from Navigator GPS Flight Testing for the Magnetospheric MultiScale Mission," Proceedings of the 25th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS 2012), Nashville, TN, September 2012, pp. 731-742.

Mallama, A. and Schmude. R.W. "Cloud band variations and the integrated luminosity of Jupiter." Icarus, vol. 220, p.211.

Mallama, A. "Improved luminosity model and albedo for Saturn." Icarus, vol. 218, p. 56.

Russell, R.P., Arora, N., Vittaldev, V., Gaylor, D.E., Anderson, J.T., “Ballistic Coefficient Prediction for Resident Space Objects,” Advanced Maui Optical and Space Surveillance Technologies Conference, Maui, HI, September 2012.

Vittaldev, V., Russell, R.P., Arora, N., Gaylor, D., Second Order Kalman Filter Using Multi-Complex Step Derivatives, Paper AAS 12-204, AAS/AIAA Space Flight Mechanics Meeting, Charleston, SC, Jan 2012.

Zelensky, N.,  F. Lemoine , D. Chinn, S. Melachroinos, J. Beall, J. Larson, O. Bordyugov,“SLR Station Recovery, Center of Frame Motion, and Time Varying Gravity”,American Geophysical Union, Fall Meeting 2012, abstract #G53B-1136.

2011

Duffy, B. and Chichka, D., “Deprit's Method for Non-Autonomous Bi-Parametric Systems including the Elliptic Restricted Three-Body Problem," AIAA Region I Young Professional, Student, and Education Conference, Laurel, MD, Nov. 4, 2011.

Lemoine, F. G., Zelensky, N. P., Chinn, D. S.; Beall, J. W.; Melachroinos, S. “Improvements in Orbit Determination for Altimetric Satellites”,American Geophysical Union, Fall Meeting 2011, abstract #G54A-06.

2010

Barbee, B.W. and Gaylor, D.E., "Automated Real-Time Targeting and Guidance (ARTGUID) for Lunar Descent and Precision Landing," AAS 10-035, 33rd Annual Guidance and Control Conference, Breckenridge, Colorado, February 6-10, 2010.

Barbee, Brent, Tim Esposito, Elfego Pinon III, Sun Hur-Diaz, Ronald Mink, and Daniel Adamo, “A Comprehensive Ongoing Survey of the Near-Earth Asteroid Population for Human Mission Accessibility,” Paper AIAA-2010-8368 presented at the AIAA/AAS Astrodynamics Specialist Conference, Toronto, Ontario, Canada, 2-5 August 2010.

Gaebler, J., S. Hur-Diaz and R. Carpenter, “Comparison of Sigma-Point and Extended Kalman Filters on a Realistic Orbit Determination Scenario,” Paper AAS 10-320, Alfriend Symposium, Monterey, CA, May 2010.

Lulich, T.D., Garrison, J.L., Haase, J.S., Yang, Y-M., Voo, J., Xie, F., Muradyan, P., "Open Loop Tracking of Radio Occultation Signals from an Airborne Platform," Proceedings of the 23rd International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS 2010), Portland, OR, September 2010, pp. 1049-1060.

Mallama, A, Stockdale, C, Nelson, P. and Krobusek, B. "Assessment of the resonant perturbation errors in Galilean satellite ephemerides using precisely measured eclipse times." Icarus, vol. 210, p. 346.

Schmidt, J., "Analysis of Square-Root Kalman Filters for Angles-Only Orbital Navigation and the Effects of Sensor Accuracy on State Observability," Master's Thesis, Utah State University , Logan Utah, 2010.

2009

Bamford, B., Mitchell J., Southward, M., Baldwin, P., et al, "GPS Navigation for the Magnetospheric Multiscale Mission", Proceedings from the Institute of Navigation GNSS Meeting, Savanah, Georgia, September 2009.

Winternitz, L. Bamford, B. Heckler, G, "A GPS receiver for High-Altitude Navigation", IEEE Journal of Selected Topics in Signal Processing, Volume 3 Issue 4, 2009, pp. 541-556.

Schmidt, J., Geller, D., Chavez, F., "Improving Angles-Only Navigation Performance by Selecting Sufficiently Accurate Accelerometers," SSC09-VI-3, AIAA/USU Conference on Small Satellites, Logan, Utah, August 2009.

Barbee, B.W., Davis, G.W., Hur-Diaz, S., "Spacecraft Trajectory Design for Tours of Multiple Small Bodies," AAS 09-433, AAS/AIAA Astrodynamics Specialist Conference, Pittsburgh, Pennsylvania, August 9-13, 2009.

Barbee, B., "Planetary Defense: Near-Earth Object Deflection Strategies," USAF Air & Space Power Journal, April 1, 2009.

Barbee, B.W., Nuth, J.A., "Asteroid Impact Threats: Advancements in Asteroid Science to Enable Rapid and Effective Deflection Missions," Journal of Cosmology, 2009, Vol. 2, pp. 386-410.

Mallama, A. "Characterization of terrestrial exoplanets based on the phase curves and albedos of Mercury, Venus and Mars.", Icarus, vol. 204, p. 11.

Mallama, A., Soma, M., Sada, P.V., Modic, R.J. and Ellington, C.K. "Astrometry of Iapetus, Ariel, Umbriel, and Titania from eclipses and occultations." Icarus, vol. 200, p. 265.

Voo, J.K.; Garrison, J.L.; Haase, J.S.; Lulich, T.D., "Recent experiments in Ocean remote sensing with bistatic radar using Navigation Satellite Signals," Radar Conference, 2009 IEEE , vol., no., pp.1,6, 4-8 May 2009 doi: 10.1109/RADAR.2009.4977115

2008

Heckler, G., Winternitz, L., Bamford, W., "MMS-IRAS TRL-6 Testing", Proceedings From The Institute of Navigation GNSS Meeting, Savanah, Georgia, September 2008.

Bamford, W. et al, "A GPS Receiver For Lunar Missions," Insitute of Navigation National Technical Meeting, San Diego, California, January 28-30, 2008.

Schmidt, J., Lovell, T.A., "Estimating Geometric Aspects of Relative Satellite Motion Using Angles-Only Measurements," AIAA Guidance, Navigation and Control Conference, Honolulu, Hawaii, August 2008.

Mitchell, J.W., Baldwin, P.J., Barbee, B.W., Kurichh, R., and Luquette, R.J., "Characterization of a Radio Frequency Space Environment Path Emulator for Evaluating Spacecraft Ranging Hardware," AIAA Guidance, Navigation, & Control Conference, August, 2008.

Skelton, E., Hur-Diaz, S., et al, "Hubble Space Telescope Magnetic Sensing System and Reduced Gyro Control," Paper AAS 08-277 presented at the F. Landis Markley Astronautics Symposium in Cambridge, Maryland, June 29-July 1, 2008.

Hur-Diaz, S., J. Wirzburger, and D. Smith, "Three Axis Control of the Hubble Space Telescope Using Two Reaction Wheels and Magnetic Torquer Bars for Science Observations," Paper AAS 08-279 presented at the F. Landis Markley Astronautics Symposium in Cambridge, Maryland, June 29-July 1, 2008.

2007

Mitchell, J.W., Barbee, B.W., Baldwin, P.J., Luquette, R., "Expanding Hardware-in-the-Loop Formation Navigation and Control with Radio Frequency Crosslink Ranging," Proceedings of the 20th International Symposium on Space Flight Dynamics, September 24-28, 2007. (Historic Inns of Annapolis, Governor Calvert House, Annapolis, Maryland, USA)

Barbee, B., Fowler, W., "Spacecraft Mission Design for the Optimal Impulsive Deflection of Hazardous Near-Earth Objects (NEOs) using Nuclear Explosive Technology," Planetary Defense Conference, Washington DC, March 5-8, 2007.

Barbee, B., Gertsch, L., Fowler, W., "Spacecraft Mission Design for the Destruction of Hazardous Near-Earth Objects (NEOs) via Distributed-Energy Explosives," Planetary Defense Conference, Washington DC, March 5-8, 2007.

Gaylor, D., Barbee, B., "Algorithms for Safe Spacecraft Proximity Operations," AAS-2007-107, AAS/AIAA Spaceflight Mechanics Meeting, Sedona, Arizona, January 28, 2007.

Hur-Diaz, Sun, et al, "Zero Gyro Kalman Filtering in the Presence of a Reaction Wheel Failure," Paper AAS 07-338 presented at the AAS/AIAA Astrodynamics Specialist Conference, Mackinac Island, MI, August 19-23, 2007.

Hur-Diaz, Sun, Bill Bamford, and Dave Gaylor, "Autonomous Lunar Orbit Navigation Using Optical Sensors," Paper AAS 07-312 presented at the AAS/AIAA Astrodynamics Specialist Conference, Mackinac Island, MI, August 19-23, 2007.

Jones, L. L., Crouse, P. L., Cary, E. A., Esposito, T. C., "Integrating Automation into a Multi-Mission Operations Center," Infotech@Aerospace 2007, Sonoma, CA, May 7-10, 2007.

2006

D. Gaylor, R. Page and K. Bradley, "Testing of the Java Astrodynamics Toolkit Propagator," AIAA-2006-6754, AIAA/AAS Astrodynamics Specialist Conference, Keystone, Colorado, August 21-24, 2006.

Bamford, B., Winternitz, L., Hayes, C., "Autonomous Navigation at High Earth Orbits," GPS World, April 1, 2006.

Bamford, W. et al., "Navigation Performance in High Earth Orbits using Navigator GPS Receiver," 29th Annual Guidance and Control Conference, Breckenridge, Colorado,February 4-8, 2006.

Evans, J., Mulder, T., and Pinon III, E., "Autonomous Rendezvous Guidance and Navigation for Orbital Express and Beyond," AAS-06-194, published in the proceedings of the AAS/AIAA Space Flight Mechanics Conference, Tampa, FL, January 22-26, 2006.

Mitchell, J. et al., "A Message Oriented Middleware for a Soft Real-Time Hardware-in-the-Loop Spacecraft Formation Flying Testbed," 2006 AIAA Modeling and Simulation Technologies Conference, Keystone, CO, August 21-24, 2006

Barbee, B. "Optimal Deflection of Hazardous Near-Earth Objects and Mitigation Mission Design Using Current Technology," 2006 NASA Near-Earth Object Detection and Threat Mitigation Workshop, Vail, CO, June 26-29, 2006.

Cary, E., Esposito, T., Madden, M., Parker, J., Bradley, D. "Lessons Learned from Engineering a Multi-Mission Satellite Operations Center," 2006 IEEE Aerospace Conference, Big Sky, Montana, March 9, 2006.

2005

Bamford, W. et al., "Real-Time Geostationary Orbit Determination Using the Navigator GPS Receiver," 2005 Flight Mechanics Symposium, NASA Goddard Space FlightCenter, Greenbelt, MD, October 18-20, 2005.

Gaylor, D. Lightsey, G., Key, K., "Effects of Multipath and Signal Blockage on GPS Navigation in the Vicinity of the International Space Station (ISS)," Navigation, Vol. 52 No. 2, 2005.

Gaylor, D. et al., "Stellar-Aided Inertial Navigation Systems for Lunar and Mars Exploration," 2005 Flight Mechanics Symposium, NASA Goddard Space Flight Center,Greenbelt, MD, October 18-20, 2005.

Mitchell, J. "Recent Developments in Hardware-in-the-Loop Formation Navigation and Control," (with Rich Luquette), 2005 Flight Mechanics Symposium, NASA Goddard Space Flight Center, Greenbelt, MD, October 18-20, 2005.

Mitchell, J. et al., "Introduction to the MultiUAV2 Simulation and its Application to Cooperative Control Research," Proceedings of the American Controls Conference, June 8-10, 2005.

Hur-Diaz, S. "Hubble Space Telescope Zero Gyro Sun Pointing with a Kalman Filter," (with John Seidel), 2005 Flight Mechanics Symposium, NASA Goddard Space Flight Center, Greenbelt, MD, October 18-20, 2005.

Davis, G. "The Lunar Split Mission: Concepts for Robotically Constructed Lunar Bases," (with Paul Lowman), 2005 International Lunar Conference, Toronto, Canada,September 18-25, 2005.

Cary, E., "Implementation of a Middleware Based Ground System", 2005 Ground Systems Architectures Workshop, Manhattan Beach, CA, March 2005.

2004

Gaylor, D. et al, "Hardware-in-the-Loop Testing of Continuous Control Algorithms for a Precision Formation Flying Demonstration Mission," 18th International Symposium On Space Flight Dynamics, Munich, Germany, October 11-15, 2004.

Lu, V. et al., "The Precision Formation Flying Integrated Analysis Tool (PFFIAT)", 2nd International Symposium on Formation Flying Missions and Technologies", CrystalCity, VA, September 14-16, 2004.

Evans, J., Mulder, T., and Pinon III, E., "The History and Future of Space Simulations," AIAA Modeling and Simulation Technologies Conference and Exhibit, Providence, RI, August 16-19, 2004.

Gaylor, D. et al., "An Environment for Hardware-in-the-Loop Formation Navigation and Control," AIAA-2004-4735, AIAA/AAS Astrodynamics Specialist Conference and Exhibit, Providence, RI, August 2004.

Mitchell, J. et al., "Synchronous and Asynchronous Communication Effects on the Cooperative Control of Uninhabited Aerial Vehicles," AIAA Guidance, Navigation, & Control Conference, August, 2004.

Madden, M., E. Cary, J. Parker, D. Bradley, "Fleet Integration for Multi-Mission Operations Center," AIAA Space 2004, San Diego, CA, September 2, 2004.

Cary, E. Smith, D. "A Modular, Data Driven System Architecture for GSFC Ground Systems", 2004 Ground Systems Architectures Workshop, Manhattan Beach, CA, March 2004.

2003

Burns, R. et al., "A System for Real-time, Closed Loop, Multi-Spacecraft Mission Simulations", AIAA Modeling and Simulation Conference, Austin, TX, August 11-14, 2003.

Bamford, W. et al., "Navigation of Large Autonomously Controlled Formations," AIAA GN&C Conference, Austin, TX, August 11, 2003.

Chan, J., A. Ariasti and S. Hur-Diaz, “Comparison of Two Station-keeping Strategies for Ionic Propulsion Systems,” 2003 Flight Mechanics Symposium, NASA Goddard Space Fight Center, October 28-30, 2003.

Gaylor, D. and E.G. Lightsey, "GPS/INS Kalman Filter Design for Spacecraft Operating in the Proximity of the International Space Station," AIAA GN&C Conference, Austin,TX, August 11, 2003.

Mitchell, J. et al., "Communication Issues in the Cooperative Control of Unmanned Aerial Vehicles," Forty-First Annual Allerton Conference on Communication, Control, & Computing, Monticello, IL, October, 2003.

Mitchell, J. et al., "Optimal vs. Heuristic Assignment of Cooperative Autonomous Unmanned Air Vehicles," AIAA Guidance, Navigation, & Control Conference, August, 2003.

Mitchell, J., "A Multiple UAV Simulation for Researchers," AIAA Modeling & Simulation Technologies Conference, August, 2003.

Mitchell, J. and D. Richardson, "A Third-Order Analytical Solution for Relative Motion with a Circular Reference Orbit," Journal of the Astronautical Sciences, Vol. 51, No. 1, January-March 2003.

Schetter, T. et al., "Multiple Agent-Based Autonomy for Satellite Constellations," Journal of Artificial Intelligence Research, Vol. 145, 2003.

Mitchell, J., "Invariant Manifold Tracking for the First-Order Nonlinear Hill's Equations,'' Journal of Guidance, Control & Dynamics, Vol. 26, No. 4, pp. 622--627, 2003.

2002

Davis, G. et al., "GPS-Based Navigation and Orbit Determination for the AMSAT AO-40 Satellite," AIAA GN&C Conference, Monterey, CA, August 5-8, 2002.

Moreau, M. et al., "Preliminary Results of the GPS Flight Experiment on the High Earth Orbit AMSAT-OSCAR 40 Spacecraft", 25th Annual Guidance, Navigation, and Control Conference, Breckenridge, CO, February, 2002.

Thomas, S. et al., "Monitoring and Analysis of Multi-Agent Systems," 2nd GSFC Workshop on Radical Agent Concepts, Greenbelt, MD, January 2002.

2001

Gottlieb, R. et al., "Orbit Determination Accuracy Requirements for Collision Avoidance," AAS/AIAA Space Flight Mechanics Meeting, Santa Barbara, CA, Paper No. AAS-01-181, January 2001.

Mueller, J. et al., "Agent-Based Control of Multiple Satellite Formation Flying," 6th International Symposium on Artificial Intelligence, Robotics and Automation in Space.Montreal, Canada. June 2001.

Chien, S., et al., "The Techsat-21 Autonomous Sciencecraft Constellation Demonstration", Proceedings of i-SAIRAS 2001, Montreal, Canada, June 2001.

Mueller, J. et al., "A Background Layer of Health Monitoring and Error Handling for ObjectAgent," 2001 FLAIRS, Key West, Florida, May 2001.

Mitchell, J.W., "A New Kinetic Element Formulation for the Rotation of a Perturbed Mass-Asymmetric Rigid Body," (with D.L. Richardson), Journal of Celestial Mechanics & Dynamical Astronomy, Vol. 81, No. 1/2, pp. 13-25, September 2001.

Gottlieb, R., Sponaugle, S., Gaylor, D., "Orbit Determination Accuracy Requirements for Collision Avoidance," Proceedings of the AAS/AIAA Space Flight Mechanics Meeting, Santa Barbara, CA, Paper No. AAS-01-181, January 2001.

2000

Davis, G. et al., "Pre-Launch Testing of GPS Receivers for Geodetic Space Missions", ION GPS-2000, Salt Lake City, UT, September 19-22, 2000.

Gaylor, D. at al., "Satellite Collision Prediction and Avoidance System," Motorola Technical Developments Journal, Volume 41, May 2000.

Lightsey, G. et al., "Design and Performance of Space Algorithms for the GPS Receiver Used on International Space Station and Crew Return Vehicle", AAS GN&C Conference, Breckenridge, CO, February 2, 2000.

Gaylor, D. "Constellation Growth," Motorola Technical Developments Journal, Volume 40, January 2000.

Zetocha, P. et al., "Commanding and Controlling Satellite Clusters" IEEE Intelligent Systems, November/December 2000.

Schetter, T. et al., "Multiple Agent-Based Autonomy for Satellite Constellations," Second International Symposium on Agent Systems and Applications, Zurich,Switzerland, September 2000.

Schetter, T. et al., "Comparison of Multiple Agent-based Organizations for Satellite Constellations," 2000 FLAIRS AI Conference, Orlando, Florida, May 2000.

Gaylor, D., Gottlieb, R., Sponaugle, S., "Satellite Collision Prediction and Avoidance System," Motorola Technical Developments, Volume 41, May 2000.

1999

Davis, G. and E. Drocella, "Working Document Toward Modification of Attachment 18 of WP8D/194: A Review of the Existing Radio Frequency Environment to Support the addition of the Space-to-Space Direction to the Existing RNSS Space-to Earth Allocation in the Bands 1559-1610 MHz and 1215-1260 MHz", U.S. Working Party 8D Document No. 4, International Telecommunications Union World Radio Conference 2000 Preparatory Meeting, Geneva, Switzerland, April, 1999.

Simpson, J. et al., "Testing of the International Space Station and X-38 Crew Return Vehicle GPS Receiver", ION GPS-99, Nashville, TN, September 14-17, 1999.

Eanes, R. et al., "GLONASS Orbit Determination at the Center for Space Research", Proceedings of the International GLONASS Experiment Workshop, Nashville TN, September 1999. pp. 183-199.

Mitchell, J.W., "A Simplified Variation of Parameters Approach to Euler's Equations of Motion for an Arbitrarily Torqued Asymmetric Rigid Body,'' (with D.L. Richardson), Advances in the Astronautical Sciences, Astrodynamics, Volume 103, Part III, pp. 2489-2512, August 1999.

Mitchell, J.W., "A Variation of Parameters Approach to Euler's Equations," (with D.L. Richardson), Journal of Applied Mechanics, Transactions of the ASME, Vol. 66, No. 1, pp. 273-276, March 1999.

1998

Davis, G. "Information Paper on Space-to-Space Applications of the Global Positioning System", U.S. Working Party 8D Document No. 32, International Telecommunications Union World Radio Conference 2000 Preparatory Meeting, Geneva, Switzerland, October, 1998.

1997

Davis, G., et al., "The Accuracy Assessment of Precise Orbits Computed from Doppler Tracking Data", Journal of the Astronomical Sciences, Vol. 45, No. 4, October-December 1997.

Fuller, R., D. Hong, S. Hur-Diaz, J. Lind, J. Rodden, M. Tse, "GPS Tensor, An Attitude and Orbit Determination System for Space", ION GPS-97, September, 1997.

Fuller, R., D. Hong, S. Hur-Diaz, J. Lind, J. Rodden, M. Tse, “GPS Tensor, An Attitude and Orbit Determination System for Space,” ION GPS-97, Kansas City, MO, Sept. 16-19, 1997.

Davis, G. et al., "A Low Cost High Accuracy Automated GPS-Based Orbit Determination System for Low Earth Satellites", ION GPS-97, Nashville, TN, September, 1997.

Davis, G., "Exploring the Limits of GPS-Based Orbit Determination", Navigation, Vol. 44, Summer, 1997.

1996

Hur-Diaz, S. and A. Kamel, "Image Navigation Improvement Using Star Trackers, SPIE, GOES-8 and Beyond", Denver, CO, August 7-9, 1996.

Davis, G. W. and B. E. Schutz, "Precision Orbit Determination in the EOS Laser Altimeter Satellite Orbit", AIAA/AAS Astrodynamics Specialist Conference, San Diego, CA, July 29-31, 1996.

Rim, H. et al., "Gravity Tuning Experiments for the Precise Orbit Determination of the EOS Altimeter Satellite (EOS/ALT-GLAS) using GPS Tracking Data", AAS/AIAA Spaceflight Mechanics Meeting, Austin, TX, February 12-15, 1996.

1995

Tapley, B., et al., "The JGM-3 Gravity Model", Journal of Geophysical Research, Vol. 100, No. C12, December 15, 1995.

Tapley, B. et al., "Precision Orbit Determination for TOPEX/Poseidon", Journal of Geophysical Research, Vol. 99, No. C12, December 15, 1995.

Davis, G. et al., "The Guier-Plane Navigation Solution and the Accuracy Assessment of Precise Orbits Computed from Doppler Tracking Data", CSR-TM-95-02, Center for Space Research, University of Texas at Austin, July, 1995.

Pinon III, E. and Fowler, W., "Lunar Launch Trajectory Optimization Using a Genetic Algorithm," AAS-95-142, published in the proceedings of the Fifth Annual AAS/AIAA Space Flight Mechanics Conference, Albuquerque, NM, February 13-16, 1995.

Pinon III, E. and Fowler, W., "Use of a Genetic Algorithm To Generate Earth to Moon Trajectories," AAS-95-141, published in the proceedings of the Fifth Annual AAS/AIAA Space Flight Mechanics Conference, Albuquerque, NM, February 13-16, 1995.

1994

Brock, K., R. Fuller, S. Hur-Diaz, and J. Rodden, "GPS Attitude and Orbit Determination for Space", ION GPS-94, Salt Lake City, UT, September 20-23, 1994.

Davis, G. et al., "Site Positioning and Velocities from DORIS Tracking of SPOT-2 and TOPEX/Poseidon", CSR-TM-94-04, Center for Space Research, University of Texas atAustin, November, 1994.

Davis, G. et al., "GPS Tracking Techniques for Low Altitude Satellites", ION GPS-94,Salt Lake City, UT, September 19-22, 1994.

Davis, G. et al., "Tracking System Options for Future Altimeter Satellite Missions",Goddard Space Flight Center Flight Mechanics/Estimation Theory Symposium,Greenbelt, MD, May 17-19, 1994.

Gaylor, D. "Integration of Global Positioning System User Equipment into the T-43 Aircraft", Intermetrics, Inc., Holloman AFB, NM, March 1994.

Hur, S. and A. Bryson, “Optimal Guidance of a Solar Sail Spacecraft to the Sun-Earth L2 Point,” 13th IFAC Symposium, Automatic Control in Aerospace - Aerospace Control ’94, Palo Alto, CA, Sept. 12-16, 1994.

Schutz, B. et al., "Precision Orbit Determination for the EOS Laser Altimeter Satellite", AAS/AIAA Spaceflight Mechanics Meeting, Cocoa Beach, FL, February 14-16, 1994.

1993

Davis, G. et al., "Preliminary Accuracy Assessment of the DORIS Tracking System on TOPEX/Poseidon", AIAA/AAS Astrodynamics Specialist Conference, Victoria, B. C.,Canada, August 16-19, 1993.

Watkins, M. et al., "Precise Station Coordinate Determination from DORIS Tracking of TOPEX/Poseidon", AIAA/AAS Astrodynamics Specialist Conference, Victoria, B. C.,Canada, August 16-19, 1993.

Fowler, W., Korsmeyer, D.J., Pinon III, E., Roesset, P.J., and Striepe, S.T., "Mini-Spacecraft for A Multiple Asteroid Rendezvous Mission," AIAA/AHS/ASEE Aerospace Design Conference, Irvine, CA, February 16-19, 1993.

1992

Hur, S. and A. Bryson, “Minimum Time Solar Sailing from Geosynchronous Orbit to the Sun-Earth L2 Point,” AIAA/AAS Astrodynamics Conf., Hilton Head, SC, Aug. 10-12, 1992.

Watkins, M. et al., "Absolute Positioning using DORIS Tracking of the SPOT-2 Satellite", Geophysical Research Letters, Vol. 19, No. 20, October, 1992.

Ries, J. et al., "Preliminary Orbit Determination for the SPOT-2 Satellite using DORIS Doppler Data", CSR-TM-92-01, Center for Space Research, University of Texas at Austin, July, 1992.

1991

Fowler, W., Korsmeyer, D.J., Pinon III, E., Roesset, P.J., and Striepe, S.T., "Analysis of a Multiple Asteroid Rendezvous Mission," AAS/AIAA Spaceflight Mechanics Meeting, Houston, Texas, February 11-13, 1991.

Bell, L., Bilby, C., Boyd, J.W., Davis, G., Frizzell, A., Korsmeyer, D., Mark, H., McCusker, T., O'Connor, B., Pinon III, E., and Smith, H., "The Human Exploration of the Solar System," published by the International Astronautical Federation (IAF-91-462), published in the proceedings of the 42nd Congress of the International Astronautical Federation, Montreal, Canada, October 5-11, 1991.