Dual-System Warm Standby of Remote Sensing Satellite Control System Technology

Abstract

Standby is a technique that has been widely applied to improve system reliability and availability in the stage of system design. For satellite control system, it requires features of high reliability, security and sustainability. In this paper, we design a dual-system warm standby technology. The system consists of double control servers, one is operating control server and another one is standby control server. Dual-system warm standby log files use differential ghost method that can’t only strengthen log real-time but also reduce network usage. Erasing log files after the operation is completed that can reduce reliance on storage memory. When switching to backup server, according to the dual-system warm backup log files, it can recover the current mission progress and continue to run the mission. Through experimental verification, the design has a good reliability and stability. It can be widely used in aerospace field test.