Range-DOA Information and Scattering Information in Phased-Array Radar

2019 IEEE 5th International Conference on Computer and Communications (ICCC) Pub Date : 2019-12-01 DOI:10.1109/ICCC47050.2019.9064480

Chao Shi, Dazhuan Xu, Ying Zhou, Weilin Tu

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引用次数: 5

Abstract

In this paper, the application of information theory to describe radar measurement problems is investigated. We define the range-DOA information in the phased-array radar as the mutual information between range, direction of arrival (DOA) and the received signal. The theoretical expression and an asymptotic upper bound for this information are presented in a single target scenario. It is concluded that the range information is independent of DOA information at high signal-to-noise ratio (SNR). The relationship between the upper bound and the Cramer-Rao bound (CRB) is discussed. In addition, the scattering information is defined as the mutual information between scattering properties and the received signal. The corresponding expression is formulated theoretically. Numerical simulation confirms our theoretical observations and indicates that the derived information can be employed as an evaluation index to quantitatively analyse the system performance. The regularity of information change reflects the information acquisition efficiency of a radar system, providing a guidance for system designers.

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相控阵雷达的距离-方位信息和散射信息

本文研究了信息论在描述雷达测量问题中的应用。我们将相控阵雷达中的距离-方位信息定义为距离、到达方向(DOA)和接收信号之间的互信息。在单一目标情况下，给出了该信息的理论表达式和渐近上界。结果表明，在高信噪比条件下，距离信息与方位信息无关。讨论了上界与Cramer-Rao界(CRB)的关系。另外，将散射信息定义为散射特性与接收信号之间的互信息。从理论上给出了相应的表达式。数值模拟证实了我们的理论观察，并表明所得信息可以作为定量分析系统性能的评价指标。信息变化的规律性反映了雷达系统的信息获取效率，为系统设计人员提供了指导。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2019 IEEE 5th International Conference on Computer and Communications (ICCC)

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