空间信息论的新研究进展

空间信息指雷达探测系统中目标的距离、方向和散射等信息，空间信息论是采用香农信息论的思想方法研究雷达等信息获取系统的基础理论。本文围绕空间信息的概念、空间信息量的理论公式及闭合表达式、熵误差和雷达分辨率等基本理论问题，论述了空间信息论当前的研究现状，总结了空间信息论方面的主要研究工作，介绍了空间信息的概念及其系统模型，目标距离信息、散射信息和方向信息方面的研究工作，重点分析了空间信息量的理论推导，熵误差的概念及其与均方误差的关系，分辨率的新定义及其与传统分辨率的关系。本文指出空间信息论亟待解决的理论问题，最后对空间信息论的发展趋势做出了分析和展望。

Recent Progress on Spatial Information Theory

Spatial information can be described as the range information, direction of arrival (DOA) information and scattering information of the targets in radar detection systems. Spatial information theory is a basic theory for information extraction system such as radar systems using Shannon information theory. The recent research progress and main research work are summarized based on the concept of spatial information, the theoretical and closed-form expressions of spatial information, entropy error, radar resolution, and other basic theoretical issues. The concept of spatial information and its system model are introduced to analyze the spatial information. The theoretical derivation of the quantity of spatial information, the concept of entropy error and its relation to mean square error, the new definition of resolution and its relation to traditional resolution are emphatically analyzed. The theoretical problems that need to be solved are pointed out in the paper. Finally, the development trend of spatial information theory is analyzed and prospected.