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AN ALGORITHM OF DOR TONE PROCESSING IN VLBI SYSTEM

机译:VLBI系统中的Dor音处理算法

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Very Long Baseline Interferometry (VLBI) has the advantages of far distance, tremendous high angular, high accuracy, and it is widely used in geodesy, deep space exploration.Usually spacecraft transmits high frequency sinewave Differential One-way Ranging (DOR) tones to provide the best precision.This paper presented an algorithm of DOR tone processing.It is based on cross correlation and adopts gradual frequency estimation.The algorithm can reduce computation burden and decrease error source induced by traditional local correlation method.Simulation experimental results show effectiveness of the algorithm, and it will play an important role in real-time navigation in deep space exploration project.
机译:超长基线干涉法(VLBI)具有远距离,巨大的高角度,高精度等优点,被广泛用于大地测量,深空探测中。通常,航天器会发射高频正弦波差分单向测距(DOR)音调来提供本文提出了一种基于互相关的DOR音调处理算法,并采用了渐进的频率估计方法,该算法可以减轻计算量,减少传统局部相关法引起的误差源。该算法将在深空探测项目的实时导航中发挥重要作用。

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