航天器多普勒测速平均误差的分析与修正

Analysis and Calibration of Average Error in Doppler Range Rate Measurement for Spacecraft

对航天器多普勒测速平均误差进行了分析，详细推导了圆轨道和椭圆轨道时该误差的计算公式，计算了不同采样周期和轨道高度时的误差大小。经过分析指出，该项误差对于高轨航天器影响较小，对于低轨航天器可以通过缩短采样周期或利用3个点或多个点的连续测量数据进行修正。

This paper discusses the average error in Doppler range rate measurement for spacecraft and derives in detail formulas for computation of such errors for circular and elliptic orbits. The magnitude of errors for different sampling periods and orbit altitudes is computed. Based on detailed analysis, the paper points out that the error has less impact on spacecraft in high altitude orbits. As for spacecraft in low altitude orbits, the error can be corrected by reducing sampling periods or with continuous measurement data for three or more points.