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为了实际测量、验证光学遥感卫星的杂散光抑制能力,分析某些特殊卫星的成像轨道和时间特点,研制了一套基于7维大型机器人的光学遥感卫星杂散光扫描测试系统。根据卫星全年太阳照明几何条件,通过建立的光束扫描子系统各机构的控制方程构建照明光束的扫描位置、方位角(-90°~+90°)和俯仰角(-29°~+42.5°),精度分别达到10 mm、0.2°和0.1°。消光子系统采用反射率低于1.5%(400~1 600 nm)的材料和大消光比结构,极黑目标模拟器消光比可达9.9×10-7。研制的光学遥感卫星杂散光扫描测试系统能够满足目前大部分光学遥感相机的杂散光测试、分析和验证要求。
In order to measure and verify the stray light suppression ability of optical remote sensing satellites and analyze the imaging orbit and time characteristics of some special satellites, a set of optical remote sensing satellite stray scanning and testing system based on 7-D large robot was developed. According to the satellite illumination geometry conditions throughout the year, the scanning beam position, azimuth (-90 ° ~ + 90 °) and pitch angle (-29 ° ~ + 42.5 ° ) With accuracies of 10 mm, 0.2 ° and 0.1 °, respectively. The extinction subsystem uses a material with a reflectance of less than 1.5% (400 to 1 600 nm) and a large extinction ratio structure, and the extinction ratio of a very dark target simulator can reach 9.9 × 10 -7. Developed optical remote sensing satellite stray light scanning test system to meet most of the current optical remote sensing camera stray light testing, analysis and verification requirements.