基于视频信号的自适应海杂波抑制算法  

Adaptive sea clutter suppression algorithm based on video signal

作　　者：赵玉丽 商凯 聂洪武 Zhao Yuli;Shang Kai;Nie Hongwu(Nanjing Les Electronic Equipment Co.,Ltd.,Nanjing 210007,China;Tianjin Sub-bureau of North China Regional Air Traffic Management Bureau of CAAC,Tianjin 300300,China)

机构地区：[1]南京莱斯电子设备有限公司,江苏南京210007 [2]中国民用航空华北地区空中交通管理局天津分局,天津300300

出　　处：《江苏科技信息》2020年第18期54-56,共3页Jiangsu Science and Technology Information

摘　　要：海杂波的存在严重干扰了近程目标的检测,尤其是以检测近程目标为目的的导航雷达,而现有的海杂波抑制方法中主要是通过特定STC曲线对雷达前端增益进行调节,以避免近距离的海杂波饱和,但在较强海况下近程的海杂波依然很强,导致很多虚警。文章介绍一种基于接收机检波后视频信号的自适应海杂波抑制算法,通过雷达回波幅度自适应计算STC曲线,将近程海杂波强度压制到与噪声幅度均值一致,按照纽曼皮尔逊准则可将海杂波剔除。The sea clutter signals affect short range target detection seriously, especially the navigation radar whose mission is to detect short range targets. But in the existing sea clutter suppression methods, the radar front-end gain is adjusted mainly by a specific STC curve to avoid near-range sea clutter saturation. However, the near-range sea clutter is still strong under strong sea conditions, which causes many false alarms. Therefore, this paper introduces an adaptive sea clutter suppression algorithm based on video signal after receiver detection. With this algorithm, the STC curve is calculated by radar echo amplitude adaptive method, and the near sea clutter intensity is suppressed to be consistent with the average noise amplitude, thus the sea clutter can be removed according to Newman Pearson criterion.

关 键 词：海杂波抑制 STC 视频信号 

分 类 号：TN957[电子电信—信号与信息处理]