星载相机地面电性能测试系统的设计与实现

System design and implement of ground electrical performance testing for spaceborne camera

根据新型相机结构复杂、载荷多的特点,针对性地设计并实现了一种新型星载相机的电性能地面测试系统。分析并总结了地面测试系统的设计需求,并且针对新型相机测试的全面性要求,设计并实现了整星和多种载荷的模拟接口;针对新型相机测试的可靠性要求,提出了冗余网络切换的测试系统设计方法并解决了数据库访问冲突的问题;针对新型相机测试的安全性要求,提出了针对冗余链路的测试方法和错误注入的测试方法。该系统已经成功配合完成了某高轨型号星载相机的研制,并交付使用。试验证明测试系统功能全面稳定,连续测试72 h误码率为0,能够满足新型相机全面性、可靠性、安全性的测试需求。

Based on the characteristics of the new camera with complex structure and multiple loads,a ground test system for the electrical performance of a new satellite camera was designed and implemented.The design requirements of the ground test system were analyzed and summarized,and for the comprehensive requirements of the new camera test,the simulation interface of the whole satellite and multiple loads was designed and implemented.Aiming at the reliability requirements of the new camera test,the design method of redundant network switching test system was proposed and the problem of database access conflict was solved. In order to meet the safety demand of the new camera test, test methods for redundant links and error injection were proposed. The system has successfully completed the development and delivery of a hight-orbit spaceborne camera. The experimental results indicate that this system works stably, and the bit error rate is 0 under 72 hours of continuous testing. The system can meet the testing requirements of comprehensiveness,reliability and safety of new type spaceborne camera.