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Formulation and Evaluation of Parallel Algorithms for the Orbit Determination Problem
Covariance Analysis of TDRS Applications Requiring TDRS State Predictions
A Semianalytical Theory for the Partial Derivatives for Perturbed Motion
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accuracy algorithm angle antenna approximate argument of perigee attitude camera clock errors computed Computer Sciences Corporation Control Segment convergence coordinate system covariance matrix Cowell DC program differential correction distortion Doppler measurements earth ECEF ephemeris epoch equations of motion evaluation Figure force model GDOP Global Positioning System GPS satellites ground transponder GTDS image data interpolation isodistance iterations Kalman filter landmark linear LU LU meters monitor station navigation message Navstar node observation on-board ONPAC orbit determination orbit estimation output pixel parameters partial derivatives performance period perturbations position error prediction processor pseudo range R&D GTDS reference registration resampling residuals sensor signal simulated smoothed smoother Space spacecraft spin axis spin plane TDRS TDRSS Thematic Mapper trajectory transition matrix transponder upload USER RANGE ERROR user satellite values variational equations vector velocity VISSR plane Yuma Proving Ground