This letter investigates the problem of distributed target detection with signal mismatch in homogeneous environment. Precisely, the actual signal steering vector is not aligned with the nominal one which is assumed by radar system. Within this framework, we propose a tunable detector which can adjust its directivity (robustness or selectivity) flexibly and effectively by changing a tunable parameter. Moreover, this tunable detector encompasses the generalized Kelly's generalized likelihood ratio test (GKGLRT) and the generalized adaptive matched filter (GAMF) as its two special cases. Finally, to test the effectiveness of this detector, the real data received by the IPIX radar are used for experiments. The results illustrate the superiority of the proposed detector both in simulation environment and realistic environment.

中文翻译：

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信号失配情况下分布式目标检测的可调检测器

这封信研究了均匀环境中信号不匹配的分布式目标检测问题。准确地说，实际信号导向矢量与雷达系统假定的标称导向矢量不一致。在这个框架内，我们提出了一种可调探测器，它可以通过改变可调参数灵活有效地调整其方向性（鲁棒性或选择性）。此外，该可调检测器包含广义凯利广义似然比检验 (GKGLRT) 和广义自适应匹配滤波器 (GAMF) 作为其两个特殊情况。最后，为了测试该探测器的有效性，使用IPIX雷达接收到的真实数据进行实验。结果表明了所提出的检测器在模拟环境和现实环境中的优越性。