基于方位向模糊区位置去除虚假船的检测方法  

The way of detection of false ships based on azimuth ambiguities

作　　者：徐凌云 房红兵[1] XU Ling-yun;FANG Hong-bing(Nanjing Universityof Science and,Technology,Nanjing 210094,China)

机构地区：[1]南京理工大学,江苏南京210094

出　　处：《电子设计工程》2017年第23期73-76,80,共5页Electronic Design Engineering

摘　　要：模糊性是合成孔径雷达重要参数之一。在进行港口或是海面舰船检测时,当模糊区域能量过高会导致产生虚假目标。雷达照射到强散射物体时会产生虚假影像,严重影响对图像的判读,进而影响舰船目标检测的准确性。基于提高舰船检测准确性的目的,本文先从模糊性来源入手,通过分析计算方位向模糊值,并且结合虚假影像的特点提出了分块区域下通过方位向模糊区位置,鉴别虚假目标,最后通过实际数据分析验证了该方法的有效性,提高舰船检测的准确性。The ambiguity is one of the important parameters of synthetic aperture radar. when Port or sea ships detected,the fuzzy region energy is too high will result in a false target.The radar radiation will produce a false image to the strong scattering object,a serious impact on the interpretation of the image,thereby affecting the ship target detection accuracy.This paper begins with the source of ambiguity by calculating the azimuth ambiguity.and combined the characteristics of a false image presented by a large area under the block azimuth distance to the twilight zone location,identification of false targets. Finally,analysis the actual data and improve ship detection accuracy.

关 键 词：合成孔径雷达(SAR) 方位向模糊度 模糊区 舰船检测 

分 类 号：TN959.1[电子电信—信号与信息处理]