Development and testing of satellite operation system for Korea Multipurpose Satellite-1

• Published in: ETRI journal Vol. 22; no. 1; pp. 1 - 11
• Main Authors: Mo, Hee-Sook, Lee, Ho-Jin, Lee, Seong-Pal
• Format: Journal Article
• Language: English
• Published: 01.03.2000
• ISSN: 1225-6463

The Satellite Operation System (SOS) has been developed for a low Earth orbiting remote sensing satellite, the Korea Multipurpose Satellite-1, to monitor and control the spacecraft as well as to perform the mission operation. SOS was designed to operate on UNIX in the HP workstations. In the design of SOS, flexibility, reliability, expandability, and interoperability were the main objectives. In order to achieve these objectives, a CASE tool, a database management system, consultative committee for space data systems recommendation, and a real-time distributed processing middleware have been integrated into the system. A database-driven structure was adopted as the baseline architecture for a generic machine-independent, mission-specific database. Also, a logical address-based interprocess communication scheme was introduced for a distributed allocation of network resources. Specifically, a hot-standby redundancy scheme was highlighted in the design which seeks higher system reliability and uninterrupted service required in real-time fashion during the satellite passes. Through various tests, SOS had been verified its functional, performance, and interface requirements. The design, implementation, and testing of the SOS for KOMPSAT-I are presented. (Author)