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基于AIS距离-多普勒投影的地波雷达CFAR检测验证方法

DOI: 10.3969/j.issn.0253-4193.2015.04.007

Keywords: 地波雷达 CFAR验证 AIS 距离-多普勒谱

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Abstract:

恒虚警(CFAR)检测是地波雷达船只目标探测的主要方法.目前基于船舶自动识别系统(AIS)信息的CFAR检测验证方法是一种间接验证方式,容易受地波雷达系统测向误差的影响,且不具备对错检与漏检目标的分析能力.本文提出了一种基于AIS信息的评价地波雷达CFAR检测结果的直接验证方法.该方法将有效的AIS信息转换到地波雷达的距离-多普勒谱中,通过在该谱中AIS信息与CFAR检测结果的关联分析,实现CFAR检测结果的直接评价.论文首先给出了方法的原理和处理流程,然后利用实测数据给出了该方法在CFAR检测结果评价中的实际应用,验证了方法有效性,而且该方法也为低可观测目标的CFAR检测提供了参数优化调整的依据

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