相参频率捷变雷达目标稀疏重建性能边界综述

doi:10.12305/j.issn.1001-506X.2021.07.01

系统工程与电子技术 ›› 2021, Vol. 43 ›› Issue (7): 1729-1736.doi: 10.12305/j.issn.1001-506X.2021.07.01

• 雷达稀疏信号处理技术专栏 • 下一篇

相参频率捷变雷达目标稀疏重建性能边界综述

黄天耀*, 李宇涵, 王磊, 刘一民, 王希勤

清华大学电子工程系, 北京 100084

收稿日期:2021-01-08 出版日期:2021-06-30 发布日期:2021-07-08
通讯作者: 黄天耀
作者简介:黄天耀(1989—)，男，助理研究员，博士，主要研究方向为雷达信号处理、通信雷达一体化、压缩感知|李宇涵(1998—), 男, 博士研究生, 主要研究方向为雷达信号处理|王磊(1991—), 男, 助理研究员, 博士, 主要研究方向为雷达抗干扰、雷达信号处理、智能雷达|刘一民(1983—), 男, 副教授, 博士, 主要研究方向为雷达系统、雷达抗干扰、一体化系统、智能交通、智能感知、统计信号处理|王希勤(1968—), 男, 教授, 博士, 主要研究方向为雷达系统、智能交通
基金资助:
国家自然科学基金(61801258)

Review of Performance bounds on sparse target recovery using coherent frequency agile radar

Tianyao HUANG*, Yuhan LI, Lei WANG, Yimin LIU, Xiqin WANG

Department of Electronic Engineering, Tsinghua University, Beijing 100084, China

Received:2021-01-08 Online:2021-06-30 Published:2021-07-08
Contact: Tianyao HUANG

摘要/Abstract

摘要：

相比频率固定的脉冲多普勒体制, 频率捷变体制在抗干扰方面具有显著优势。但在该体制下, 基于匹配滤波的信号处理算法存在旁瓣平台问题, 难以与动目标检测兼容。压缩感知理论将目标参数估计建模作为欠定方程求解, 为该问题提供了解决思路。在相参频率捷变雷达中, 压缩感知能否准确重建目标是一个基础性问题。本文梳理了针对该问题的相关研究, 借助相变理论与相变曲线的解析表达式, 定量描述了捷变频雷达重建目标的成功概率与主要系统和目标参数之间的关系; 该理论性能边界与仿真实际所能达到的性能相接近。此外, 还探讨了现有成果在实际应用中的价值, 展望了未来研究方向。

关键词: 频率捷变雷达, 压缩感知, 性能边界, 相变

Abstract:

Frequency agile radar (FAR) significantly outperforms the traditional pulse-Doppler radar in the term of electronic counter-countermeasures, which applies constant carrier frequencies. However, FAR that uses matched filtering encounters problem of severe sidelobe pedestal, hindering its compatibility with moving target detection. Compressed sensing (CS) methods reconstruct target parameters by solving an under determined linear equation, hence relieve the sidelobe pedestal issue. It is a fundamental study to analyze whether FAR exactly recovers target with CS methods. This paper comprehensively reviews the state-of-the-art researches in this topic. Recent efforts derive closed-form phase transition curves, and reveal that these curves explicitly demonstrate the relationship between success rates of sparse recovery and parameters of the radar system as well as the observed scene. The theoretical performance bound is approximate to the results in practical simulations. The applicability of these theoretical results in practical scenarios and future research directions are discussed.

Key words: frequency agile radar, compressed sensing, performance bound, phase transition

中图分类号:

TN974

黄天耀, 李宇涵, 王磊, 刘一民, 王希勤. 相参频率捷变雷达目标稀疏重建性能边界综述[J]. 系统工程与电子技术, 2021, 43(7): 1729-1736.

Tianyao HUANG, Yuhan LI, Lei WANG, Yimin LIU, Xiqin WANG. Review of Performance bounds on sparse target recovery using coherent frequency agile radar[J]. Systems Engineering and Electronics, 2021, 43(7): 1729-1736.

图/表 3

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相参频率捷变雷达目标稀疏重建性能边界综述

Review of Performance bounds on sparse target recovery using coherent frequency agile radar

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