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以前在文献中介绍过的用于海杂波的混合K分布模型,对杂波回波包络的空间和时间相关特性提供了定量处理的基础。本文把混合K分布模型扩充到包括海杂波的空间特性问题方面,阐述了这些特性与模型的物理基础的相互关系,并讨论了它们的仿真技术。此外,本文在理论上分析了不同的雷达距离分辨力的影响,并将这些结果与按真实数据的观察结果相比较。最后,为使雷达距离分辨力优化而导出了定量的处理技术,以便在不同的杂波条件下给出最佳的目标检测性能。同时,文中还介绍了一些实际例子。
The hybrid K distribution model for sea clutter previously described in the literature provides a basis for quantitative processing of spatial and temporal correlation characteristics of clutter echo envelopes. In this paper, we extend the hybrid K distribution model to include the spatial characteristics of sea clutter, explain the relationship between these characteristics and the physical basis of the model, and discuss their simulation techniques. In addition, this paper analyzes the influence of different radar distance resolution theoretically, and compares these results with the real data. Finally, a quantitative processing technique has been derived to optimize radar range resolution to give the best target detection performance under different clutter conditions. At the same time, the article also introduces some practical examples.