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分形模型在海上雷达目标检测中的应用 被引量:14

Radar Ship Targets Detection Based on Fractal Model
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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.
作者 杜干 张守宏
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
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