分形模型在海上雷达目标检测中的应用

在海杂波背景下进行了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问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，并利用其固的差异进行检测。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。

Radar Ship Targets Detection Based on Fractal Model

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.