航天器自旋对测轨数据影响的修正方法

从测量原理上分析了航天器自旋对地基无线电测轨数据的影响,提出了测距和多普勒测速自旋影响修正方法,该方法也可用于估算航天器天线安装位置与自旋轴的距离。利用修正方法对嫦娥二号地月转移飞行段的地基测距与多普勒测速数据进行处理,解算的嫦娥二号天线安装位置精度在厘米量级。使用修正后的测距和多普勒测速数据,并融合时延与时延率测量数据,进行定轨计算,结果表明,使用修正后的测轨数据对事后定轨计算有近50m的精度提高。

Spin Effect Correction Method for Spacecraft Orbit Measurement Data

A theoretical analysis is conducted to ranging and Doppler velocity measurement data ple. A correction method is proposed for rangin tion method can also estimate the alignment of ranging and Doppler velocity measurement data evaluate the effect of the spin of a spacecraft on from the perspective of the measurement princi- g and Doppler velocity measurement. The correc- the on-board antenna. In the processing of CE-2 during the earth-moon transfer phase, the error of the estimated alignment of the on-board antenna is approximately se bit determination is performed by using the corrected ranging and Doppler and the results show that the correction for the data can improve the orbital veral centimeters. The or- velocity measurement data, accuracy by 50m.