Duration of fades associated with radar clutter
Duration of fades associated with radar clutter
复制标题
与雷达杂波相关的衰落持续时间
DOI：
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发表时间：
1966
期刊：
影响因子：
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通讯作者：
A. J. Rainal
中科院分区：
文献类型：
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作者：
A. J. Rainal
来自由静止目标和许多独立、随机移动的散射体组成的测距单元的脉冲到脉冲雷达回波的波动包络被假定为类似于静止瑞利过程。在雷达术语中，脉冲到脉冲雷达回波的这种波动或衰落包络称为信号加杂波。脉冲到脉冲雷达回波的包络可能会在一段时间内衰减到某个临界阈值水平以下，从而导致雷达的性能变得不令人满意。针对各种阈值水平和各种信号杂波功率比，在图表中给出了基础瑞利过程的衰落持续时间和衰落之间间隔的概率密度的理论近似值。目前尚不清楚相应的确切结果。本文的结果适用于以平稳瑞利过程表征衰落现象的所有其他科学技术领域。
The fluctuating envelope of the pulse-to-pulse radar echoes from a range cell consisting of a stationary target along with many independent, randomly moving scatterers is assumed to behave like a stationary Rayleigh process. In radar terminology this fluctuating or fading envelope of the pulse-to-pulse radar echoes is called signal plus clutter. The envelope of the pulse-to-pulse radar echoes may fade below some critical threshold level for a duration such that the performance of the radar becomes unsatisfactory. Theoretical approximations for the probability densities of both the duration of fades and the interval between fades of the underlying Rayleigh process are presented in graphs for various threshold levels and various signal-to-clutter power ratios. The corresponding exact results are at present unknown. The results of this paper apply to all other fields of science and technology for which a stationary Rayleigh process characterizes a fading phenomenon.