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本文研究瑞利和非高斯型杂波干扰中对数接收机的检测性能。在瑞利杂波干扰中,求出了稳定目标Swerling第一类起伏目标和Swerling第二类起伏目标的这种性能。对数接收机的检测损失通常小于Green推测的损失1/2 logn,但与Hansen确定的渐近损失1.08分贝相一致。Swerling第二类起伏目标的损失在频率捷变应用中是很重要的,在积累脉冲数少而检测概率P_d较高时,该损失可能很严重,而且显然趋近于渐近损失1.08分贝作为下限。为了确定对数接收机的性能,给出了Gram-Charlier级数的累积量的曲线。还给出了确定对数-正态和韦布尔杂波干扰下对数接收机检测性能的曲线。
This paper studies the detection performance of logarithmic receivers in Rayleigh and non-Gaussian clutter interferences. In Rayleigh clutter interference, this property of the Swerling first-class swirling target and Swerling second-class undulating target is obtained. The loss of logarithmic receiver detection is usually less than 1/2 logn of Green’s supposed loss, but it is consistent with Hansen’s asymptotic loss of 1.08 dB. The loss of the Swerling second-class fluctuating target is important in frequency-agile applications where the accumulation of pulses is small and the detection probability P_d is high, this loss can be severe and apparently approaching asymptotic loss of 1.08 dB as the lower limit . To determine the performance of a logarithmic receiver, a plot of the cumulative amount of Gram-Charlier series is given. The curves of the logarithmic receiver performance are also given to determine the log-normal and Weibull clutter interferences.