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A model for spatially correlated radar clutter

机译：空间相关雷达杂波模型

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摘要

On the basis of empirical evidence, a model for spatially correlated radar clutter is developed. In this model, echo amplitudes from two different resolution cells are described statistically by the correlated K-distribution. Explicit expressions for the joint probability density function and joint members of this distribution are developed. The problem of minimum-mean-square-error (MMSE) clutter estimation, where the clutter level in a given resolution cell is estimated from the clutter level in a different cell by minimizing the MSE, is addressed. The effects of spatial correlation and resolution cell size on the overall characteristics of echo are considered. Results show that clutter in this class may be characterized by a family of K-distributions whose parameters are determined by the resolution cell area and the spatial autocorrelation function. These results are in agreement with reported measurements.
机译：在经验证据的基础上，建立了空间相关雷达杂波模型。在该模型中，通过相关的K分布统计地描述了来自两个不同分辨率单元的回波幅度。提出了联合概率密度函数和该分布的联合成员的显式表达式。解决了最小均方误差（MMSE）杂波估计的问题，在该问题中，通过最小化MSE根据不同单元中的杂波电平来估计给定分辨率单元中的杂波电平。考虑了空间相关性和分辨单元大小对回波整体特征的影响。结果表明，此类杂物的特征可能在于K分布族，其K参数由分辨率单元格面积和空间自相关函数确定。这些结果与报道的测量结果一致。

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