The multifractal spectrum of a sea clutter using a random walk model

被引：3

作者：

He Jingbo ^{[1
]}

Xu Jianghu ^{[1
]}

机构：

[1] Naval Univ Engn, Elect Engn Coll, Wuhan 430033, Hubei, Peoples R China

来源：

ACTA OCEANOLOGICA SINICA | 2017年 / 36卷 / 09期

基金：

中国国家自然科学基金;

关键词：

random walk; sea clutter; multifractal;

D O I：

10.1007/s13131-017-1107-y

中图分类号：

P7 [海洋学];

学科分类号：

0707 ;

摘要：

The radar echo signal of a sea clutter is nonlinear, nonstationary and time varying. A multifractal measure analysis can describe the local singularity of a physics system. The random walk model of a sea clutter scattering is analysed to disclose the intrinsic physical characteristics and laws of the sea clutter. Stochastic differential equations are given for the physical quality of the sea clutter. A diffusion process model is established It using formula. The singularity of the random walk model is tested by a multifractal spectroscopy, and the accuracy of this model is proven by the multifractal spectroscopy of a real-life IPIX radar data set. Thus, the random walk model is effective for describing the dynamics mechanism of the sea clutter.

引用

页码：23 / 26

页数：4

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