卫星自主导航技术具有重要的军事价值。提出了一种基于焦平面的红外静态地球敏感器和可见光星敏感器的天文自主导航系统。详细论述了天文导航的原理,推导了地心矢量和地心距的解算公式,分析了影响地心矢量和地心距解算精度的因素,并给出了数值仿真的结果。结果表明该系统具有体积小、重量轻、功耗小、成本低和无转动部件等优点,适用于各种轨道航天器的姿态确定与轨道确定。 Satellite autonomous navigation technology has important military value. An astronomical autonomous navigation system based on focal plane infrared static earth sensor and visible light star sensor is proposed. The principles of astronomical navigation are discussed in detail. The formulas for calculating the geocentric vector and the geocentric distance are deduced. The factors influencing the geocentric vector and the geocenter resolution are analyzed. The numerical simulation results are also given. The results show that the system has the advantages of small size, light weight, small power consumption, low cost and no rotating parts. It is suitable for the attitude determination and orbit determination of various orbit spacecraft.