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<title>Technical Sessions</title> <h2> 1999 AAS/AIAA Space Flight Mechanics Conference</h2> <h2>Technical Sessions</h2> <dl> <dt><h3>Session 1: Planetary Explorations & Asteroids. </h3> <h4>Chair: L. D'Mario, JPL </h4> <h4>Peak 3, 7:00am-10:00am </h4> <ul> <li><a href="abstracts/99-100.html"><b>AAS 99-100</b></a> -- <b>The role of Independent Assessment in the International Space Station Program </b>,R. Strachan ,Science Applications International Corp., Houston, Tx <li><a href="abstracts/99-101.html"><b>AAS 99-101</b></a> -- <b>A Viable Chemical/Aerobrake Architecture for Human Exploration of Mars </b>,M. Cupples*, C. Kluever**, R. Kirchmyer*** ,*DESE Research, Inc, ** U. Missouri,** NASA MSFC <li><a href="abstracts/99-102.html"><b>AAS 99-102</b></a> -- <b>Lunar and Planetary Coronograph Explorer (LAPLACE) Mission Design </b>,C. Seybold*, W. Fowler*, D. Slater** ,*The University of Texas at Austin, **Southwest Research Institute <li><a href="abstracts/99-103.html"><b>AAS 99-103</b></a> -- <b>Departure Energies, Trip Times and Entry Speeds for Human Mars Missions </b>,M. Munk ,NASA- Langley Research Center, Hampton, VA <li><a href="abstracts/99-104.html"><b>AAS 99-104</b></a> -- <b>Human Exploration of Mars- the Mars Surface Mission </b>,S. Hoffman*, M. Duke**, B. Joosten***, W. Knudsdon**** ,*Science Applications International Corp, **Lunar and Planetary Institute, *** NASA JSC, ****University of Illinois <li><a href="abstracts/99-105.html"><b>AAS 99-105</b></a> -- <b>Optimal Deflection of Earth Approaching Asteroids </b>,B. Conway ,University of Illinois, Urbana, IL </ul> <dt><h3>Session 2: Mission Design & Analysis. </h3> <h4>Chair: R. Melton, Penn. State. U. </h4> <h4>Peak 2, 7:00am-10:00am </h4> <ul> <li><a href="abstracts/99-107.html"><b>AAS 99-107</b></a> -- <b>Use of Lunar Gravity-Assists for Earth Orbit Plane Changes </b>,M. Jah, J. Rustick, C. Potterveld, R. Madler ,Embry-Riddle Aeronautical University, Prescott, AZ <li><a href="abstracts/99-108.html"><b>AAS 99-108</b></a> -- <b>Flexibility and Simplicity in Mission Operations Software as Demonstrated during Seastar (Orbview II) Orbit Raising </b>,M. Louks, B. Helleckson ,Space Exploration Engineering, Paonia, CO <li><a href="abstracts/99-109.html"><b>AAS 99-109</b></a> -- <b>Fuel Optimal Low-Earth-Orbit Maintenance </b>,K. Jensen*, F. Fahroo**, I. Ross** ,* USN, Space Warfare Command, Leesburg, VA, ** Naval Postgraduate School, Monterey, CA <li><a href="abstracts/99-110.html"><b>AAS 99-110</b></a> -- <b>Student Space Mission Prototyping Using TK Solver </b>,W. Fowler, M. Fischer , <li><a href="abstracts/99-112.html"><b>AAS 99-112</b></a> -- <b>Earth Reentry Trajectory Parametric Analyses using the Program to Optimize Simulation Trajectories (POST) </b>,J. Foster, P. Bellini ,Lockheed Martin Astronautics, Denver, CO </ul> <dt><h3>Session 3: Structural Dynamics & Control </h3> <h4>Chair: P. Bainum, Howard U. </h4> <h4>Peak 1, 7:00am-10:00am </h4> <ul> <li><a href="abstracts/99-114.html"><b>AAS 99-114</b></a> -- <b>Three-Phase Motion of Systems with Elastic Members </b>,S. Djerassi ,RAFAEL, Haifa, Israeil <li><a href="abstracts/99-115.html"><b>AAS 99-115</b></a> -- <b>Coning Stability Criteria and Optimal Passive Damping of Asymmetric Spinning Spacecraft Under Thrust </b>,D. Halsmer ,Oral Roberts University, Tulsa, OK <li><a href="abstracts/99-116.html"><b>AAS 99-116</b></a> -- <b>Fuel Slosh and Active Nutation Control Interaction Analysis using ellipsoidal Fuel Pendulums </b>,S. Saeed ,Hughes Space & Communications, El Segundo, CA <li><a href="abstracts/99-117.html"><b>AAS 99-117</b></a> -- <b>Multiple-Mode Input Shaping for the Attitude Control of a Flexible Spacecraft </b>,A. Tewari, A. Sanyal ,Indian Institute of Technology, Kanpur, India <li><a href="abstracts/99-118.html"><b>AAS 99-118</b></a> -- <b>Role of the Products of Inertia in Various Spacecraft Dynamics Problems </b>,T. Williams ,University of Cincinnati, Ohio <li><a href="abstracts/99-119.html"><b>AAS 99-119</b></a> -- <b>Understanding How Time Optimal Control Optimizes the Interaction Forces among Robot Links </b>,G. Giese*, R. Longman**, H. Bock** ,Technical University of Zurick, Zurick, Switzerland, **Columbia University, New York, ***Univeristy of Heidelberg, Heidelberg, Germany </ul> <dt><h3>Session 4: Formation Flying/Constellation </h3> <h4>Chair: T. Carter, Eastern Connecticut U. </h4> <h4>Peak 2, 4:00pm-700pm </h4> <ul> <li><a href="abstracts/99-121.html"><b>AAS 99-121</b></a> -- <b>Satellite Formation Flying Design and Evolution </b>,C. Sabol, R. Burns, C.A. McLaughlin ,Air Force Research Lab Space Vehicle Directorate, Kirtland AFB NM <li><a href="abstracts/99-122.html"><b>AAS 99-122</b></a> -- <b>Exploiting Orbital dynamics for Aperture Synthesis using Distributed Satellite Systems </b>,E. Kong, R. Sedwick, D. Miller ,Space Systems Laboratory, MIT <li><a href="abstracts/99-123.html"><b>AAS 99-123</b></a> -- <b>Optimal Station Keeping Strategies via Parallel Genetic Algorithms </b>,J. Smith*, R. Proulx*, P. Cefola*, J. Draim** ,The Charles Stark Draper Lab, Cambridge, MA, ** ELLIPSO, Washington, DC <li><a href="abstracts/99-124.html"><b>AAS 99-124</b></a> -- <b>Low Propellant Solutions to Aperture Synthesis Using Distributed Satellite Systems: Applications to TECHSAT21 </b>,R. Sedwick, E. Kong, D. Miller ,MIT Space Systems Lab, Cambridge, MA <li><a href="abstracts/99-125.html"><b>AAS 99-125</b></a> -- <b>A Strategy for Maintaining Distance Between Satellites in an Orbiting Constellation </b>,Z. Tan, P. Bainum, A. Strong ,Mechanical Engineering, Howard University, Washington, DC <li><a href="abstracts/99-126.html"><b>AAS 99-126</b></a> -- <b>Dynamics and Control of Cluster Orbits for Distributed Space Missions </b>,C.C. Chao, J. Pollard, S. Janson ,The Aerospace Corporation, Los Angeles, Ca </ul> <dt><h3>Session 5: Trajectory Optimization </h3> <h4>Chair: C. Kluever, Missouri U., Kansas City </h4> <h4>Peak 3, 4:00pm-7:00pm </h4> <ul> <li><a href="abstracts/99-128.html"><b>AAS 99-128</b></a> -- <b>Optimal Spacecraft Trajectories Via Higher Order Differential Inclusions </b>,V. Coverstone-Carrol*, C.A. Hartman*, A.L. Herman**, D.B. Spencer*** ,*U. Illinois, Urbana-Champaign,**Spectrum-Astro, Gilbert, AZ, ***USAF Research Lab, Kirtland AFB, NM <li><a href="abstracts/99-129.html"><b>AAS 99-129</b></a> -- <b>Optimization of Ascent Trajectory and Related Design Issues for an Aerial Propellant Transfer Rocketplane </b>,K. Gallagher ,Pioneer Rocketplane, Vandenberg AFB, CA <li><a href="abstracts/99-130.html"><b>AAS 99-130</b></a> -- <b>The Influence of Coordinate System Selection on Genetic Algorithm Optimization of Low-Thrust Spacecraft Trajectories </b>,J. Eisenreich, W.T. Fowler ,University of Texas, Austin, TX <li><a href="abstracts/99-131.html"><b>AAS 99-131</b></a> -- <b>A Direct Trajectory Optimization Method for Constrained Interplanetary Missions </b>,C. Kluever*, M. Cupples**, R. Kirchmyer*** ,*U. of Missouri, ** DESE Research, Inc., ***NASA MSFC <li><a href="abstracts/99-132.html"><b>AAS 99-132</b></a> -- <b>Fuel Optimal Planar Interplanetary Trajectories Using Low-thrust Exhaust-Modulated Propulsion </b>,S. Vadali, R. Nah, E. Braden, I. Johnson, Jr. ,Texas A&M U., College Station, TX <li><a href="abstracts/99-133.html"><b>AAS 99-133</b></a> -- <b>Optimal Interplanetary Trajectory Design Via Hybrid Genetic Algorithm/Recursive Quadratic Program Search </b>,T. Crain*, R. Bishop*, W. Fowler*, K. Rock** ,*University of Texas, Austin, **Allied Signal, Leesburg, VA </ul> <dt><h3>Session 6: MATLAB Special Session </h3> <h4>Chair: J. LaMance, Constell, Inc. </h4> <h4>Peak 5, 4:00pm-7:00pm </h4> <ul> <li><a href="abstracts/99-135.html"><b>AAS 99-135</b></a> -- <b>A Flight Mechanics Analysis of Crew Return Vehicle (CRV)/International Space Station (ISS) Safe Separation </b>,C. Kennedy ,Lockheed Martin Astronautics, Denver, CO <li><a href="abstracts/99-136.html"><b>AAS 99-136</b></a> -- <b>The Spin Axis Determination Package </b>,W. Sullivan, M. Paluszek, D. Surka ,Princeton Satellite Systems, Princeton, NJ <li><a href="abstracts/99-137.html"><b>AAS 99-137</b></a> -- <b>Software-in-the-loop for Attitude Determination and Control System Using Simulink and Real-Time Workshop. </b>,I. Kim, J. Kim ,INHA University, Inchon, Korea <li><a href="abstracts/99-138.html"><b>AAS 99-138</b></a> -- <b>Gravity-Assist Trajectory Design with MATLAB </b>,C.D. Eagle ,Lockheed Martin Astronautics, Denver, CO <li><a href="abstracts/99-139.html"><b>AAS 99-139</b></a> -- <b>MATLAB Toolbox for Rigid Body Kinematics </b>,H. Schaub, J. Junkins ,Texas A&M U., College Station TX <li><a href="abstracts/99-140.html"><b>AAS 99-140</b></a> -- <b>GPS simulation and Analysis for Reusable Launch Vehicles Using a Commercial Available Matlab Toolbox </b>,J. LaMance*, M. Evans*, J. Fernandez** ,*Constell, Inc, **Orbital, Inc. </ul> <dt><h3>Session 7: Orbit Determination I </h3> <h4>Chair: G. Born, University of Colorado </h4> <h4>Peak 3, 7:00am-10:00am </h4> <ul> <li><a href="abstracts/99-142.html"><b>AAS 99-142</b></a> -- <b>Centimeter Level Orbit Determination for the Topex/Poseidon Altimeter </b>,J. Reis, B.D. Tapley ,University of Texas, Austin <li><a href="abstracts/99-143.html"><b>AAS 99-143</b></a> -- <b>Mitigating the Effects of Selective Availability </b>,K. Gold, G. Born, S. Mitchell, B. Frazier ,University of Colorado, Bouler, CO <li><a href="abstracts/99-144.html"><b>AAS 99-144</b></a> -- <b>Simulation of the Gravity Recovery and Climate Experiment (GRACE) Mission </b>,J-R. Kim, P. Roesset, S. Bettadpur, B. Tapley ,The University of Texas, Austin <li><a href="abstracts/99-145.html"><b>AAS 99-145</b></a> -- <b>Determining Precise Orbits for Topex-Poseidon Within One Day of Real Time: Results and Implications </b>,B. Haines, S. Lichten, M. Lough, R. Muellerschoen, Y. Vigue-Rodi ,Jet Propulsion laboratory <li><a href="abstracts/99-146.html"><b>AAS 99-146</b></a> -- <b>Analysis of GPS and Satellite Laser Ranging (SLR) data for ICESAT Precision Orbit Determination </b>,J. Rim, C. Webb, B. Schutz ,The University of Texas at Austin <li><a href="abstracts/99-147.html"><b>AAS 99-147</b></a> -- <b>Precise Orbit Determination for the Mars Global Surveyor </b>,F. Lemoine, D. Rowlands, D. Pavlis, D. Chinn, G. Neumann, D. Smith ,NASA GSFC, Greenbelt, MD </ul> <dt><h3>Session 8: Attitude Dynamics & Control </h3> <h4>Chair: A. Treder, Boeing </h4> <h4>Peak 2, 7:00am-10:00am </h4> <ul> <li><a href="abstracts/99-149.html"><b>AAS 99-149</b></a> -- <b>H_inf Controller Design with Nonlinear Actuator </b>, Shahzad Khaligh ,Raytheon Systems Company, El Segundo, CA <li><a href="abstracts/99-150.html"><b>AAS 99-150</b></a> -- <b>Bifurcation Analysis of Spacecraft Attitude Control Systems </b>, Giulio Avanzini and Guido de Matteis ,Polytechnic of Turn, Italy <li><a href="abstracts/99-151.html"><b>AAS 99-151</b></a> -- <b>Adaptive Realization of Linear Closed Loop Tracking Dynamics in the Presence of Large System Model Errors </b>,H. Schaub, M. Akella, J. Junkins ,Texas A&M University, College Station, TX <li><a href="abstracts/99-152.html"><b>AAS 99-152</b></a> -- <b>GOES-10 Safe Hold Mode Attitude Dynamics and Control During Solar Array Anomaly Operations </b>,E. Harvie*, A. Dress** ,*ASRC Aerospace, Greenbeklt, MD, **NOAA, Suitland, MD <li><a href="abstracts/99-153.html"><b>AAS 99-153</b></a> -- <b>Sensitivity of Spin-Axis Reorientation and Delta-V Maneuvers </b>, Sergei Tanygin ,Analytical Graphics, Inc., Malvern, PA <li><a href="abstracts/99-154.html"><b>AAS 99-154</b></a> -- <b>Limit Cycles and Optimized Error Levels in Automated Tuning of Learning Control Gains </b>,S-L. Wirkander*, RW. Longman** ,*National Defense Research Establishment, Stockholm, Sweden, **Columbia University, New York </ul> <dt><h3>Session 9: Orbital Mechanics </h3> <h4>Chair: K. Howell, Purdue </h4> <h4>Peak1 ,7:00am-10:00am </h4> <ul> <li><a href="abstracts/99-156.html"><b>AAS 99-156</b></a> -- <b>Preliminary Orbital Control Strategy for LISA </b>,R.G. Melton ,Pennsylvania State U., University Park, PA <li><a href="abstracts/99-157.html"><b>AAS 99-157</b></a> -- <b>Software for Astrodynamics </b>,D. Vallado ,USAF, Kirtland AFB, NM <li><a href="abstracts/99-158.html"><b>AAS 99-158</b></a> -- <b>Evaluation of the Dynamic Environment of an Asteroid </b>,D.J. Scheeres, B.G. Williams, J.K. Miller ,Iowa State University, Ames, IA <li><a href="abstracts/99-159.html"><b>AAS 99-159</b></a> -- <b>Stability of Hovering Orbits around Small Bodies </b>,D.J. Scheeres , <li><a href="abstracts/99-160.html"><b>AAS 99-160</b></a> -- <b>The Main Oblateness Perturbation Problem is DEF Regular Elements </b>,I. Aparicia, L. Floria ,University de Valladolid, Spain <li><a href="abstracts/99-161.html"><b>AAS 99-161</b></a> -- <b>Three-Dimensional Periodic Solutions that Bifurcate from Halo Families in the Circular Restricted Three Body Problem </b>,K.C. Howell, E.T. Campbell ,Purdue University, West Lafayette, IN </ul> <dt><h3>Session 10: Attitude Determination </h3> <h4>Chair: J. Sunkle, University of Colorado </h4> <h4>Peak 1, 4:00pm-7:00pm </h4> <ul> <li><a href="abstracts/99-163.html"><b>AAS 99-163</b></a> -- <b>Precession of Angular Momentum Cone in Free Pitch Tumble of RADARSAT in Orbit </b>,S.R. Marandi ,Canadian Space Agency, Saint-Hubert, Quebec <li><a href="abstracts/99-164.html"><b>AAS 99-164</b></a> -- <b>High Accuracy Attitude Determination and Control of the DIVA Mission </b>,M. Wiegand, S. Theil, H.J. Rath ,ZARM, U. of Bremen, Germany <li><a href="abstracts/99-165.html"><b>AAS 99-165</b></a> -- <b>GLAS Spacecraft Attitude Determination Using CCD Star Tracker and 3-Axis Gyros </b>,M. Wiegand, S. Theil, H.J. Rath , <li><a href="abstracts/99-166.html"><b>AAS 99-166</b></a> -- <b>Gyrocompassing by Intermittent GPS Interpherometry </b>,L. Mazzini*, L. Russo** ,*Alenia Spazio, Rome, Italy,**Space Engineering, Rome, Italy <li><a href="abstracts/99-167.html"><b>AAS 99-167</b></a> -- <b>Adaptive Kalman Filtering for Multipath Rejection in GPS Based Attitude Determination </b>,F. Bernelli-Zazzera*, R. Campana** ,*Politecnico di Milano, Italy, **Laben S.p.A, Italy </ul> <dt><h3>Session 11: Orbital Debris </h3> <h4>Chair: R. McNamara, Lockheed-Martin </h4> <h4>Peak 2, 4:00pm-7:00pm </h4> <ul> <li><a href="abstracts/99-170.html"><b>AAS 99-170</b></a> -- <b>Determination of Close Approaches Based on Ellipsoidal Threat Volumes </b>,V.T. Coppola, J. Woodburn ,Analytical Graphics, Inc., Malvern, PA <li><a href="abstracts/99-171.html"><b>AAS 99-171</b></a> -- <b>Comparison of Optical and Radar Orbital Debris Measurements </b>,J.L. Africano*, T.J. Settecerri**, E.G. Stansbury** ,*Boeing North American, **Lockheed Martin Space Mission Systems and Services, ***NASA JSC <li><a href="abstracts/99-172.html"><b>AAS 99-172</b></a> -- <b>Preliminary Results from the NASA orbital Debris Observatory </b>,J.V. Lambert*, J.L. Africano*, E.G. Stansbery** ,*Boeing North American, ** NASA/JSC <li><a href="abstracts/99-173.html"><b>AAS 99-173</b></a> -- <b>A Study of Perturbation Effects on Space Debris in Supersynchronous Orbits </b>,K.K. Luu*, R.D. Culp**, C. Sabol* ,*USAF Research Laboratory, ** University of Colorado <li><a href="abstracts/99-174.html"><b>AAS 99-174</b></a> -- <b>Computation of Orbital Conjunctions and Collision Prediction Methods </b>,D.M. Henderson ,Boeing-Houston <li><a href="abstracts/99-175.html"><b>AAS 99-175</b></a> -- <b>Determination and Modeling of Error Densities in Ephemeris Prediction </b>,J.P. Jones, M. Beckerman ,Oak Ridge National Laboratory, TN </ul> <dt><h3>Session 12: Navigation & Control </h3> <h4>Chair: J. Hanson </h4> <h4>Peak 3, 4:00pm-7:00pm </h4> <ul> <li><a href="abstracts/99-177.html"><b>AAS 99-177</b></a> -- <b>Self Contained Autonomous Navigation System for Deep Space Missions </b>,Y. Guo ,Johns Hopkins University, APL, Laurel, MD <li><a href="abstracts/99-178.html"><b>AAS 99-178</b></a> -- <b>A New Solution for the Rendezvous Problem </b>,V.R. Bond ,The Boeing Company, Houston TX <li><a href="abstracts/99-179.html"><b>AAS 99-179</b></a> -- <b>Guidance, Navigation & Control Techniques for an Autonomous Rendezvous and Inspection Mission </b>,D. Barnhart*, I.T. Mitchell** ,*Air Force Research Lab, **Octant Technologies, Sunnyvale, CA <li><a href="abstracts/99-180.html"><b>AAS 99-180</b></a> -- <b>Orbit Attainment and Maintenance for the Geosat Follow-On (GOFO) Satellite </b>,S. Mitchell ,Ball Aerospace and Technologies Corporation, Boulder, CO <li><a href="abstracts/99-181.html"><b>AAS 99-181</b></a> -- <b>A New Algorithm for Star Pattern Recognition </b>,D. Mortari ,Universita' degli Studi "La Sapienza" di Roma <li><a href="abstracts/99-182.html"><b>AAS 99-182</b></a> -- <b>Star Pattern Recognition and Mirror Assembly Misalignment for DIGISTAR II and III </b>,Star Sensors ,D. Mortari, M. Angelucci </ul> <dt><h3>Session 13: Orbit Determination II </h3> <h4>Chair: S. Mitchell, Ball </h4> <h4>Peak 2, 7:00am-10:00am </h4> <ul> <li><a href="abstracts/99-184.html"><b>AAS 99-184</b></a> -- <b>Bias Estimation Technique for Geosynchronous Orbit Determination </b>,S. Kawase ,Communications Research Laboratory, Japan <li><a href="abstracts/99-186.html"><b>AAS 99-186</b></a> -- <b>Orbit Determination for Medium-Altitude Eccentric Orbits Using GPS </b>,J.G. Neelon, Jr.*, P.J. Cefola*, R.J. Proulx*, J.E. Draim** ,*The Charles Stark Draper Lab, Cambridge, MA, ** Ellipso, Inc., Washington, DC <li><a href="abstracts/99-187.html"><b>AAS 99-187</b></a> -- <b>GNSS- and Accelerometry-Based Precise orbit Determination of Low-Earth Satellites </b>,S. Casotto, A. Zin ,University di Padova, Italy <li><a href="abstracts/99-188.html"><b>AAS 99-188</b></a> -- <b>Stochastically Estimating Geodynamic Parameters from LAGEOS SLR </b>,Data ,B.D. Hartman*, G.W. Rosborough** <li><a href="abstracts/99-189.html"><b>AAS 99-189</b></a> -- <b>Precise Orbit Determination of the Low Altitude Spacecraft TRMM, GFZ-1, AND EP/EUVE Using Improved Drag Models </b>,C.M. Cox*, F.G. Lemoine**, E.C. Pavlis*** ,*Raytheon ITSS Corp, Lanham, MD, **NASA GSFC, Greenbelt, MD, ***Univ. of Maryland, Baltimore </ul> <dt><h3>Session 14: Tether Applications </h3> <h4>Chair: L. Sackett, Draper Lab </h4> <h4>Peak 1, 7:00am-10:00am </h4> <ul> <li><a href="abstracts/99-191.html"><b>AAS 99-191</b></a> -- <b>Dynamics of the ASTOR Tethered Satellite System </b>,A. Mazzoleni*, J.H. Hoffman** ,*Texas Christian U., Fort Worth, TX, **U. Texas, Dallas <li><a href="abstracts/99-192.html"><b>AAS 99-192</b></a> -- <b>Dynamical, Electrical, and Thermal Coupling in a New Class of Electrodynamic Tethered Satellites </b>,E.C. Lorenzini*, R.D. Estes*, M.L. Cosmos*, J. Pelaez** ,*Harvard-Smithsonian Center for Astrophysics, Cambidge, MA, **Polytechnic University of Madrid, Madrid, Spain <li><a href="abstracts/99-194.html"><b>AAS 99-194</b></a> -- <b>On the Radial oscillation of an Electrodynamic Tether </b>,J. Palaez*, M. Ruiz*, O. Lopez-Rebollal*, E.C. Lorenzini** ,*ETSI Aeronatico, Madrid, **Harvard-Smithsonian Center for Astrophysics, Cambridge, MA <li><a href="abstracts/99-195.html"><b>AAS 99-195</b></a> -- <b>Slingshot Orbital Injection Revisited </b>,J. Palaez, M. Ruiz ,ETSI Aeronatico, Madrid <li><a href="abstracts/99-196.html"><b>AAS 99-196</b></a> -- <b>A Method for the Identification of a Tethered Satellite </b>,D.A. Cicci, A. Lovell, C. Qualls ,Auburn U., Auburn, AL </ul> <dt><h3>Session 15: Satellite Tracking & Targeting </h3> <h4>Chair: D. Spencer, AF Labs </h4> <h4>Peak 3, 7:00am-10:00am </h4> <ul> <li><a href="abstracts/99-198.html"><b>AAS 99-198</b></a> -- <b>Satellite Tracking Using Ambient RF (STAR) Part 1: Overview </b>,W.M. Rezzonico, C.T. Krinsky, R.A. Racca, M.F. Storz ,USAF Space Warfare Center, Schriever AFB, CO <li><a href="abstracts/99-199.html"><b>AAS 99-199</b></a> -- <b>Satellite Tracking Using Ambient RF (STAR) Part 2: Orbit Estimation </b>,R.A. Racca, W.M. Rezzonico, C.T. Krinsky, M.F. Storz , <li><a href="abstracts/99-200.html"><b>AAS 99-200</b></a> -- <b>Satellite Tracking Using Ambient RF (STAR) Part 3: Calibration Methodology </b>,M. Storz, C. Krinsky, W. Rezzonico, R. Racca , <li><a href="abstracts/99-201.html"><b>AAS 99-201</b></a> -- <b>Reducing Selective Availability Effects on Post-Processed Orbits for Satellites with Limited GPS Telemetry </b>,D. Mickler, P. Axelra, G. Born ,University of Colorado, Boulder <li><a href="abstracts/99-202.html"><b>AAS 99-202</b></a> -- <b>Variation of Parameter Methods Embedding the Jacobi Integral Resulting from Energy Parameter Selection </b>,R.G. Gottlieb ,The Boeing Company <li><a href="abstracts/99-203.html"><b>AAS 99-203</b></a> -- <b>Refinement of Satellite Ballistic Factors for the Estimation of Atmosphere Density Variations and Improved LEO Orbit Prediction </b>,P. Cefola, A. Nazarenko, V. Yurasov ,The Charles Stark Draper Lab, Cambridge, MA, <li><a href="abstracts/99-204.html"><b>AAS 99-204</b></a> -- <b>The Group-Theoretic Approach to Orbital Structures Optimization Problems of Satellite Networks </b>,G.V. Mozhaev , </ul> </dl>