利用在轨光学相机对空间目标进行跟踪测量,目标相对运动角参数的测量精度决定了空间目标的定轨精度。建立目标相对运动角参数测量计算数学模型,推导出相对运动角参数测量误差传递公式。通过对仿真计算结果的分析,确定出影响目标相对运动角参数测量精度的主要误差源：目标成像焦面坐标提取误差、光学相机视轴转动欧拉角测量误差与测量卫星姿态惯性角测量误差。其中,光学相机视轴转动欧拉角测量误差对相对运动角参数的测量误差影响最大,约占总误差的80%。观测条件对测量精度也有很大的影响,尤其在目标过顶时,相对运动角参数的测量误差显著增大。

Measure precision of relative movement angles for space object determines the orbit determination precision of Space Non-Cooperative Object, which tracked and measured by spaceborne electron-optical sensor. The measure and calculation model is established and measure error transformation formula of relative movement angles is deduced. According to the result of simulation based on the measure error model of relative movement angles, it is concluded that focal plane coordinates extraction error for space object, measure error of pointing angle of optical axis, and satelliteinertial attitude angles measure error, are the main disturbance factors which influence the measure precision of relative movement angles. Measure error of pointing angle of optical axis is the key among the error factors above-mentioned, which occupied about 80%. In addition, measure condition influences the measure precision of relative movement angles for space object and severe varying of pointing angle especially the space object locating above the measure satellite.