摘要
海杂波是经雷达发射信号照射后从海洋表面反向散射的回波,它的存在严重干扰了雷达对海面目标的检测和定位跟踪性能。现有的海杂波抑制方法中,在对海杂波进行抑制的同时,也会对近处目标信号幅度造成衰减,甚至导致漏检的发生。本文从图像处理角度,提出了一种海杂波的抑制算法,包括如下几个步骤:初始化参数和数据、参数估计、海杂波的抑制和估计样本更新。最后用实测雷达数据验证了该方法的有效性和可行性。
Sea clutter is a part of radar transmitted signal back-scattered by the ocean surface ; it would significantly reduce the capability of radars in detecting and locating targets on the ocean surface. By way of existing sea-clutter suppression approach, amplitude of short-range target will also be attenuated when the sea clutter is suppressed, which even lead to missed target detecting. From the point of image processing, a sea clutter suppression algorithm is proposed ; it is composed of four steps： parameter and data initialization, parameter estimation, sea clutter sup- pression and sample updating. Validity and feasibility of this algorithm is verified in the simulation by using real ra- dar data.
出处
《火控雷达技术》
2011年第3期32-36,共5页
Fire Control Radar Technology
关键词
海杂波抑制
幅度特性
建模
目标检测
sea clutter suppression
amphtude characteristic
modehng
target detection
