Tracking of the Launch-Vehicle During the Insertion to Earth Orbit
The paper presents algorithms, software and experience results of the system for the trajectory monitoring during the injection to LEO. The system was used at the KIAM for monitoring the launch vehicle's trajectories of the spacecraft (SC) Progress and Soyuz directed to MIR orbital complex. The SC insertion to the LEO was monitored by range and angular measurements from the ground tracking stations located along the launch track. The system gives the state vector and others parameters of the SC motion as result of the measurement processing. Also the system allows obtaining the earliest orbital parameters of SC after engine operating is ended. The paper contains the statistical results for tracking of the Soyuz and Progress SC during the insertion to LEO from 1988 to 1998. The accuracy of the state vector estimation may be increased by using GPS and GLONASS navigation systems at the SC. In the paper we present the results of system work simulating with processing both measurements and navigation system data.