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通常将复合随机变量Z=AX作为海杂波幅度的模型,其中A为正值的随机变量,X具有瑞利分布。K和离散瑞利混合分布源自采用A分别为伽马或离散分布的该模型。在某些应用中,能将A的连续值进行相关。如果该相关被模拟成有限Markov过程的话,那么用隐含Markov模型(HMM)来描述Z。仅有幅度的和相位相干检测的统计结果是由HMM模型用局部最优和似然比技术导出的。文中将这些算法的性能与使用雷达数据的CFAR和多普勒处理器作了比较。
The composite random variable Z = AX is usually used as a model of the sea clutter amplitude, where A is a positive random variable and X has a Rayleigh distribution. The mixed distribution of K and discrete Rayleigh originates from the model using A, respectively, gamma or discrete distribution. In some applications, continuous values of A can be correlated. If this correlation is modeled as a finite Markov process, then an implicit Markov model (HMM) is used to describe Z. The statistical results of only amplitude and phase coherent detection are derived from the HMM model using the local optimality and likelihood ratio technique. The performance of these algorithms is compared with CFAR and Doppler processors that use radar data.