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一、引言通常,在分析淹没在杂波中目标的统计检测时,没有考虑MTI对检测概率和虚警概率的影响。对于淹没在瑞利杂波中的目标信号,由于来自MTI的杂波输出,除了方差有所变化外,仍是瑞利分布的。因此,上述的分析原则无疑是恰当的。然而,对于对数正态杂波是不恰当的。这是因为MTI的输入是对数正态分布的,而其输出剩余量不是对数正态分布的。因此,在该报告中,我们要推导出MTI的输入是目标加对数正态分布杂波时双脉冲MTI对消器输出的统计检测。由于数学推导的复杂性,我们将限于分析双脉冲对消器,至于N个脉冲对消器,在原则上可以直接推广应用。
I. INTRODUCTION In general, the impact of MTI on the probability of detection and the probability of false alarm is not taken into account when analyzing statistical tests of submerged targets in clutter. For the target signal submerged in the Rayleigh clutter, the Rayleigh distribution is still due to the clutter output from the MTI except for the variance. Therefore, the above analysis principle is undoubtedly appropriate. However, it is not appropriate for log normal clutter. This is because the input to the MTI is lognormally distributed, while the output remainder is not lognormally distributed. Therefore, in this report, we deduce that the input of the MTI is a statistical measure of the output of a two-pulse MTI canceller at the target plus log normal distribution clutter. Due to the complexity of mathematical derivation, we will be limited to the analysis of two-pulse canceller. As for the N-pulse canceller, we can in principle directly apply it.