Determination of Motion Parameters of ISS by Use of GPS Measurements
Abstract
We estimate the accuracy of determining the weakly disturbed orbital motion of International Space Station by use of GPS-measurements as well as the accuracy of forecasting such a motion. The measurements are the station coordinates in Greenwich coordinate system. They are received from on board equipment ASN-2401. The mean square errors of approximation of the measurements do not exceed 30 m when the motion is determined in a time interval less than a day. Processing the GPS-measurements in three-hour interval allows making the forecast of the motion on 15 hours forward with an error in the station radius vector not exceeding 400 m at a right choice of ballistic coeffitient. Systematic errorss in measurements of the station velocity, carried out by equipment ASN-2401, are revealed.
- Publication:
-
18th International Symposium on Space Flight Dynamics
- Pub Date:
- 2004
- Bibcode:
- 2004ESASP.548..565B