轨道改进
Because the systematic errors due to frequency offset of satellite beacon and/ or station receiver are included in Doppler data, the key problem of orbit improvement is how to estimate the frequency offset for every passing.
利用多普勒资料进行轨道改进,将遇到卫星信标机和测站接收机的频偏带来的系统差,如何估计各站圈的频偏,是决定定轨精度的一个关键问题。
This paper proposes a computation method for initial orbit determination and orbit improvement with ranging and range rate data at low angular measurement accuracy or unavailability of angular measurement data based on the ( Unit-Vector-Method ( UVM)) principle.
根据单位矢量法测轨原理,给出了在测角精度比较低或没有测角资料的情况下,利用测距、测速资料进行初轨和轨道改进的计算方法。
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