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阐述了一种用于航天器精确角位置测量的干涉测量宽带相关信号处理算法,通过仿真验证了算法的有效性,并搭建卫星干涉测量实验系统,采集某地球同步卫星信号进行宽带相关信号处理,获得清晰干涉条纹,准确估计出反映测站与卫星位置关系的时延观测量。结果表明宽带相关信号处理的估计时延与卫星信号链路标定时延、测距时延组成系统时延闭合回路,初步验证了干涉测量实验系统的有效性,为后续飞行任务中航天器高精度干涉测量积累了技术和经验。
A broadband signal processing algorithm for interferometric measurement of spacecraft precise angular position is presented. The effectiveness of the algorithm is verified by simulation and a satellite interferometry experimental system is set up. A geosynchronous satellite signal is acquired for broadband correlation signal processing. Obtain clear interference fringes, and accurately estimate the time delay observation reflecting the relationship between the station and the satellite. The results show that the estimation delay of broadband related signal processing and satellite signal chain calibration delay and ranging delay make up the system delay closed loop, which validates the validity of the interferometry experiment system for the first time, Interferometry has accumulated technology and experience.