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提出利用两个深空航天器的通用测控信号进行多频点同波束干涉测量,实现两航天器的高精度相对测量。对差分相位时延进行理论推导,提出了一种针对两航天器测控信号主载波存在频差情况下的差分时延观测量误差的模型修正方法,并对月球轨道上两航天器间同波束干涉测量地面跟踪测量条件进行了分析。仿真结果表明,利用两航天器的通用测控信号进行多频点同波束干涉测量,经误差模型修正后获取了误差小于皮秒量级的差分相位时延,能为深空航天器间相对导航定位提供高精度的观测量信息。
The common measurement and control signal of two deep spacecraft is proposed to carry out multi-frequency beam-to-beam interference measurement to realize high-precision relative measurement of two spacecraft. The differential phase delay is theoretically deduced. A model correction method is proposed for the measurement error of differential delay in the presence of the main carrier of the measured and control signals of two spacecraft, and the coherent beam interference between two spacecraft on the lunar orbit The measurement conditions for measuring ground tracking were analyzed. The simulation results show that using the common measurement and control signals of two spacecraft for multi-frequency co-beam interferometry, the error phase difference is less than the differential phase delay of picosecond order after error model correction, which can be used for the relative navigation and positioning between deep spacecraft Provide high-precision observation information.