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利用光学导航敏感器进行深空自主导航在国际上已成为一种发展趋势,这种方法具有自主性强、精度高、节约成本等优点,且距离地球越远越显优势.在国内首次开展了用于深空巡航段的自主光学导航敏感器设计研制和验证工作,所研制的光学导航敏感器原型样机设计技术指标为:焦距953.8mm,视场角0.8°×0.8°,探测极限灵敏度12Mv,测量精度0.5″(1σ),动态范围100∶1.试验室测试和外场观星试验的结果表明,测量精度达到0.5″(1σ),探测极限灵敏度达到12.5Mv,技术指标全部满足要求.
Deep space autonomous navigation using optical navigation sensors has become a development trend in the world. This method has the advantages of strong autonomy, high precision, cost saving, etc., and is further away from the earth. In the first time in China Developed and verified the autonomous optical navigation sensor for deep space cruise. The designed optical navigation sensor prototyping design specifications are as follows: the focal length is 953.8mm, the viewing angle is 0.8 ° × 0.8 °, the detection limit sensitivity is 12Mv, The measurement accuracy is 0.5 “(1σ) and the dynamic range is 100: 1. The results of laboratory test and field stargazing test show that the measurement accuracy reaches 0.5” (1σ) and the detection limit sensitivity reaches 12.5Mv, all the technical indicators meet the requirements.