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Adaptive CFAR detection for clutter-edge heterogeneity using Bayesian inference

机译:贝叶斯推理的杂波边缘异质性自适应CFAR检测

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摘要

Radar constant false alarm rate (CFAR) detection is addressed in this correspondence. Motivated by the frequently encountered problem of clutter-edge heterogeneity, we model the secondary data as a probability mixture and impose a hierarchical model for the inference problem. A two-stage CFAR detector structure is proposed. Empirical Bayesian inference is adopted in the first stage for training data selection followed by a CFAR processor using the identified homogeneous training set for target detection. One of the advantages of the proposed algorithm is its inherent adaptivity; i.e., the threshold setting is much less sensitive to the nonstationary environment compared with other standard CFAR procedures.
机译:以此方式解决了雷达恒定误报率(CFAR)检测问题。由于杂波边缘异质性的经常遇到的问题,我们将辅助数据建模为概率混合,并为推理问题强加了分层模型。提出了一种二级CFAR检测器结构。第一阶段采用经验贝叶斯推断进行训练数据选择,然后由CFAR处理器使用已识别的同类训练集进行目标检测。该算法的优点之一是其固有的适应性。也就是说,与其他标准CFAR程序相比,阈值设置对非平稳环境的敏感度要低得多。

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