Satellite Ground Control System for INSAT

Abstract

The task of controlling and monitoring a domestic communications satellite from transfer orbit injection, through the critical apogee motor firing sequence and the drift orbit to on-station operations is addressed in this paper. The Satellite Ground Control System (SGCS) employs the latest technology, equipment and computer software architecture to perform the necessary tasks of monitoring and controlling the INSAT spacecraft to be launched in 1981. This paper documents an approach which allows cooperation of the host country technological capabilities with the specialized technology required to place a satellite in orbit. A unique feature of this design is the utilization of a single minicomputer to perform both real time telemetry tracking and command (TT&C) and background orbital analysis functions at the Satellite Control Center.