Altair VHF/UHF observations of multipath and backscatter enhancement
Altair VHF/UHF observations of multipath and backscatter enhancement
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DOI：
10.1109/nrc.1991.114748
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发表时间：
1991-03
期刊：
影响因子：
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通讯作者：
D. Knepp;H. Houpis
中科院分区：
文献类型：
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作者：
D. Knepp;H. Houpis
在美国国防核机构的PEAK（传播效应评估-夸贾林）实验中，Altair，一种高性能远程VHF/UHF跟踪雷达，被用于跟踪低地球轨道上的球形卫星。实验结果用于证明，由于散射，在严重闪烁期间观察到的平均接收功率的增强。这种增强是可预测的基础上的一阶振幅统计双向雷达传播在单站传播几何，以及通过更彻底的分析使用互易性。给出了两种分析方法。这种增强对于必须在闪烁期间工作的地面和天基雷达都很重要，因为根据闪烁的严重程度和雷达发射/接收几何形状，目标（和杂波）信噪比可能增加3db
During the US Defense Nuclear Agency's PEAK (Propagation Effects Assessment-Kwajalein) experiment, Altair, a high-performance long-range VHF/UHF tracking radar, was used to track spherical satellites in low-Earth orbit. The experimental results are used to demonstrate an enhancement, due to scattering, in the average received power that is observed during severe scintillation. This enhancement is predictable on the basis of the first-order amplitude statistics for two-way radar propagation in monostatic propagation geometry as well as by a more thorough analysis using reciprocity. Both analytic approaches are presented. The enhancement is important for both ground- and space-based radars that have to operate during scintillation, since as much as a 3-dB increase in the target (and clutter) signal-to-noise ratio is possible, depending on the severity of the scintillation and on the radar transmit/receive geometry.>