Investigations into the Unexpected Delta-V Increases during the Earth Gravity Assists of Galileo and NEAR
This paper will further investigate the possible resources of these anomalous delta-V's beyond the work of Kallemeyn.
gravity↗
Engineering topics
Guinn, J.
Publications and source records attributed to Guinn, J..
7th AAS/AIAA Space Flight Mechanics Meeting
TOPEX/Poseidon is a joint American/French ocean topography experiment conducted by the National Aeronautics and Space Administration (NASA) and the Centre National d'Etudes Spatiales (CNES)...Specifically, the paper first presents the present task configuration. Changes implemented after the prime mission are then discussed. Four areas of statistical performance are emhaszed and presented in detail...finally, the paper addresses problems encountered and lessons learned.
TOPEX TOPEX/POSEIDON POEs Precision Orbit Determin↗
Observations of TOPEX/Poseidon Orbit Errors Due to Gravitational and Tidal Modeling Errors Using the Global Positioning System
Satellite altimetry must measure variations in ocean topography with cm-level accuracy. The TOPEX/Poseidon mission is designed to do this by measuring the radial component of the orbit with an accuracy of 13 cm or better RMS. Recent advances, however, have improved this accuracy by about an order of magnitude.
tidal models↗
An Automated Low-Earth Orbit Determination System with High Accuracy Real-Time Capability
The flight data have been combined at JPL with ground GPS data from a global network to routinely produce precise TOPEX/Poseidon orbits.
GPS↗
GPS Autonomous Navigation for Groundtrack Repeat Orbits
Explore the source record for details and available documents.
GPS Navigation↗
TOPEX/POSEIDON operational orbit determination results using global positioning satellites
Results of operational orbit determination, performed as part of the TOPEX/POSEIDON (T/P) Global Positioning System (GPS) demonstration experiment, are presented in this article. Elements of this experiment include the GPS satellite constellation, the GPS demonstration receiver on board T/P, six ground GPS receivers, the GPS Data Handling Facility, and the GPS Data Processing Facility (GDPF). Carrier phase and P-code pseudorange measurements from up to 24 GPS satellites to the seven GPS receivers are processed simultaneously with the GDPF software MIRAGE to produce orbit solutions of T/P and the GPS satellites. Daily solutions yield subdecimeter radial accuracies compared to other GPS, LASER, and DORIS precision orbit solutions.
Guinn, J.↗
Preliminary TOPEX/Poseidon SLR and GPS Station Coordinate Calibration
TOPEX/Poseidon(T/P) is a joint altimetric mission of U.S. NASA and French CNES design launched August 10, 1992. There are a variety of tracking systems on T/P for both operational and precise orbit determination.
satellite↗
TOPEX/Poseidon Orbit Determination Using Global Positioning Satellites in Anti-Spoofing Mode
Results of orbit determination for the TOPEX/Poseidon(T/P)mission using Global Positioning Satellites(GPS)during Anti-Spoofing (A-S) activities are presented in this paper.
orbit↗