摘要
在海杂波背景下进行有效的海上目标检测是相当困难的。本文研究了海上目标雷达回波与海杂波的分维特性,提出了一种基于海面散射分维特性的检测方法。该方法以处处连续而不可导的非平稳不规则信号模型─-分数布朗运动作为数学模型,提取出海杂波与目标回波的多种分维参数,并利用其固有的差异进行了检测。该方法用于仿真的舰船雷达弱目标的回波,取得了较好的检测效果。
It is very difficult to design an effective detection algorithm for ship targets. In this paper, a new method of detection based on fractal characteristics of sea-surface scattering is prer posed, in which the fractional Brownian motion is employed. The intrinsic difference in fractal charateristics between the sea clutter and the echoes from a target is used to identify ship targets. The simulates experiments show that the method is reliable and can efficiently improve the accuracy of detection.
出处
《电波科学学报》
EI
CSCD
1998年第4期377-381,共5页
Chinese Journal of Radio Science
关键词
分形
海杂波
目标检测
雷达
Fractal theory Sea clutter Detection