天基光学传感器的视线测量误差分析

Analysis of LOS Measurement Error for Space-Based Optical Sensor

针对天基光学传感器的视线测量误差分析问题,提出一种基于多因素分析的视线测量误差分析方法。利用目标到光学传感器像平面的转换关系,建立目标观测模型。分析视线测量过程中的各种误差源,从理论上推导地惯坐标系下的视线测量误差与卫星轨道误差、卫星姿态误差、传感器指向误差以及像元分辨率的关系。Monte Carlo仿真试验验证了该理论分析方法的有效性,分析结论可以为工程应用提供参考。

An novel analysis method of line-of-sight（LOS） measurement error of multiple factors is proposed for the space-based optical sensor.A measurement model is established using the transformation from target position to focal plane.Each error source of the line-of-sight error is analyzed.The formulas among line-of-sight measurement error in earth centered inertial coordination and satellite orbit error,satellite attitude error,sensor pointing error,instantaneous field of view of the sensor are derived.The efficiency of this analysis method is verified by a Monte Carlo simulation.Some results can provide references to engineering applications.