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针对目前国内C频段统一测控系统因不具备测速功能,在发遥控期间无法进行测距,导致其无法对卫星进行连续轨道测量的缺陷,提出了非相干测速方法。非相干测速利用卫星遥测信息中的上行载波多普勒信息以及地面站获取的下行载波多普勒信息,计算得到双向多普勒信息,对双向多普勒进行计算可获得连续的卫星运动速度信息。本文在理论上证明了这种方法的可行性,并以自旋式卫星同步控制过程中天地时延精确修正为例,说明了这种方法的应用价值。
Aiming at the defect that C-band unified measurement and control system in China does not have the speed-measuring function and can not perform ranging in the remote control period, which leads to its inability to make continuous orbit measurement on satellites, a non-coherent speed measurement method is proposed. Non-coherent speed measurement Using the Doppler information of the uplink carrier in the satellite telemetry information and the Doppler information of the downlink carrier obtained by the ground station, bi-directional Doppler information is calculated, and the continuous satellite velocity information can be obtained by calculating the bi-directional Doppler . This paper proves the feasibility of this method theoretically, and illustrates the application value of this method by taking the accurate correction of the heaven-earth delay in the spin-satellite synchronization control as an example.