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1、引言几十年来,为了了解海面微波的散射特性,曾在各方面作了许多研究。如这种信息在解决当前的问题中证明是极重要的例子中,我们注意到,海上雷达的特性往往由于信号经海面散射而被衰减。如果改善这些雷达性能的技术要有所发展,那么雷达工程师首先必须对海面散射信号一些特性获得全面的了解。在遥感中,研究人员希望正确解释包含在往往用来探测海面雷达回波中的所有信息之前,也必须了解电磁波辐射与海面相互作用的方式。分析海面散射信号的普通方法就是研究随机过程。统计分析方法用来推论对改变雷达信号特性有决定作用的基本物理过程。但是,用统计分析方法从雷达信号中能提取的信息量受
1. Introduction For decades, many studies have been conducted in various fields in order to understand the scattering characteristics of microwaves on the sea surface. In the case where such information proves to be extremely important in solving the current problems, we note that the characteristics of maritime radars are often attenuated by signals scattered by the sea. If the technology to improve the performance of these radars is to evolve, radar engineers must first have a thorough understanding of some of the characteristics of the sea-surface scattered signals. In remote sensing, researchers also want to understand how electromagnetic radiation interacts with the sea before it correctly interprets all the information contained in the often-used sea-radar echoes. The common way to analyze signals scattered at sea is to study stochastic processes. Statistical methods are used to deduce the basic physical processes that are decisive for changing the characteristics of a radar signal. However, the amount of information that can be extracted from radar signals using statistical analysis methods is limited