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星敏感器是当前广泛应用于航天器姿态测量的高精度光学姿态敏感器。介绍了一种新型分体式星敏感器的总体设计、应用及验证情况,其已成功应用于科学试验、通讯及地球观测等多种卫星平台,共有21套产品在轨验证。根据在轨遥测数据分析,全面验证了其主要技术指标:探测灵敏度5.7 Mv、数据更新率8 Hz、测量精度2.6″、阳光抑制角28°、动态性能1(°)/s等。新型分体式星敏感器是国际上首个在轨飞行验证并引入控制系统闭环控制的APS星敏感器,根据地面测试验证结果和20余套产品长达两年在轨数据的全面分析,其在轨性能与地面测试性能一致,在轨测试结果证明产品的测量精度、鲁棒性、可用性和可靠性等主要性能满足卫星使用要求。
Star sensor is widely used in spacecraft attitude measurement of high-precision optical attitude sensor. This paper introduces the overall design, application and verification of a new type of split-type star sensor. It has been successfully applied to various satellite platforms such as scientific experiment, communication and earth observation. A total of 21 products are in-orbit verification. According to on-orbit telemetry data analysis, its main technical indicators are fully verified: detection sensitivity of 5.7 Mv, data update rate of 8 Hz, measurement accuracy of 2.6 ", solar suppression angle of 28 °, dynamic performance of 1 ° / s, Star sensor is the first APS star sensor in orbit flight verification and control loop closed-loop control in the world. Based on the ground test verification results and comprehensive data analysis of more than 20 sets of orbital data in more than 20 sets of products, the orbit performance and Ground test performance consistent, in-orbit test results prove that the measurement accuracy, robustness, availability and reliability of the main performance to meet satellite use requirements.