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红外地球敏感器是卫星姿态测量的关键部件之一。在研制过程中,需要红外地球波信号源为其提供电激励信号,组成闭环测试系统,从而完成对红外地球敏感器的地面测试与标定。针对红外地球敏感器研制过程中逻辑功能验证、精度测试、可靠性环境寿命试验等需求,提出一种高精度的模拟式红外地球波算法。在对算法的精度、实时性等进行仿真分析的基础上,设计了一种红外电地球波模拟器的硬件实现方案,并研制了样机。试验结果表明,该算法及系统能够满足红外地球敏感器地面测试中的实时性和高精度需求。
Infrared Earth Sensor is one of the key components of satellite attitude measurement. During the development process, it is required that the infrared earth wave signal source provide the electrical excitation signal to form a closed-loop test system so as to finish the ground testing and calibration of the infrared earth sensor. Aimed at the needs of logic function verification, accuracy testing and reliability environmental life test during the development of infrared earth sensor, a high accuracy analog infrared geomagnetic wave algorithm is proposed. Based on the simulation and analysis of the algorithm’s accuracy and real-time performance, a hardware implementation of infrared Earth-wave simulator is designed and a prototype is developed. Experimental results show that the proposed algorithm and system can meet the real-time and high-precision requirements of ground testing of infrared earth sensor.