Glonass Laser Ranging Accuracy With Satellite Signature Effect
Glonass Laser Ranging Accuracy With Satellite Signature Effect
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DOI：
10.1023/a:1015676419548
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发表时间：
2001-09
影响因子：
4.6
通讯作者：
T. Otsubo;G. Appleby;P. Gibbs
中科院分区：
文献类型：
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作者：
T. Otsubo;G. Appleby;P. Gibbs
全球激光测距网络以及基于格罗纳斯系统的微波技术都对格罗纳斯卫星进行了跟踪。由于它们的角立方反射器阵列很大，测距数据量足以仅从激光测距数据确定它们的轨道。然而，我们发现，阵列的大小在一定程度上影响了测量的精度，这取决于测距系统的特性。在单光子激光测距的观测中也检测到反射器阵列响应的方位变化。轨道分析表明，在没有大型阵列的情况下，这一效应使测量范围平均比预期短22毫米，这解释了以前发现的微波和激光轨道之间39毫米偏差的一半以上。
GLONASS satellites have been tracked by the worldwide laser ranging networkas well as by the GLONASS-borne microwave-based technique. Owing to thelarge size of their corner cube reflector arrays, the amount of ranging data is enough to determine their orbits from laser ranging data alone. We found, however, that the large size of the array affected the accuracy of measurement to an extent that is dependent on the characteristics of the ranging systems. An azimuthal variation of the reflector array response was also detected in observations from single-photon laser ranging. Orbital analysis reveals that the effect makes the measured range on average 22 mm shorter than expected in the absence of the large array, which explains more than half of the offset of 39 mm previously discovered between microwave and laser orbits.