Abstract
The satellites get accurate parameters of orbit and attitude real-timely and on-orbit from the double-cone infrared(IR) earth sensor, which is the key equipment on the satellites and very important in increasing satellites on-orbit survivability and developing space practical ability. In order to accomplish the calibration and test of infrared earth sensor, a simulating signal source is required to provide electric earth wave signals so that a closed-loop testing system can be constituted. According to the requirement of accuracy test, environment test and reliability test of infrared earth sensor, a new algorithm for high accuracy cone-scan infrared analog earth wave was proposed. The infrared earth wave simulator was developed based on the analysis and simulation of the algorithm accuracy. Test results showed that the algorithm and test equipment could satisfy the high accuracy and real-time requirements.
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