Optical best arc RMS test results
Abstract
The performance of the GEM-L2 Earth gravity model in converging several arcs of optical satellite tracking data was evaluated. The resulting root mean square (RMS) values for the arcs are compared with those obtained by using the GEM-9 and GEM-10B gravity models. The intention is to acquire additional data to be used in selecting a starting gravity model for the derivation of an adequate gravity model for TOPEX. In addition, test runs of the GEODYN program were performed using two different models to represent the coefficient of drag. Finally, satellite position and velocity vectors were obtained for arcs of optical data.
- Publication:
-
In its Topex Gravity Model Develop. Team Activities During Fiscal Year 1984 9 p (SEE N85-27285 16-42
- Pub Date:
- April 1985
- Bibcode:
- 1985tpmd.nasa.....F
- Keywords:
-
- Gravitational Fields;
- Models;
- Orbital Elements;
- Orbital Position Estimation;
- Satellite Drag;
- Topex;
- Computer Programs;
- Geophysical Satellites;
- Root-Mean-Square Errors;
- Satellite Perturbation;
- Satellite Tracking;
- Astrodynamics