基于松弛交替投影的MIMO雷达相位编码波形设计

doi:10.3969/j.issn.0372-2112.2016.12.024

电子学报 ›› 2016, Vol. 44 ›› Issue (12): 2981-2988.DOI: 10.3969/j.issn.0372-2112.2016.12.024

基于松弛交替投影的MIMO雷达相位编码波形设计

冯翔, 陈志坤, 李风从, 赵宜楠

哈尔滨工业大学电子与信息工程学院, 黑龙江哈尔滨 150001

收稿日期:2015-03-30 修回日期:2016-02-25 出版日期:2016-12-25
- 通讯作者:
- 赵宜楠
- 作者简介:
- 冯翔,男,1988年1月出生,山东潍坊人.现为哈尔滨工业大学电子与信息工程学院博士研究生.主要研究方向为认知雷达、雷达自适应信号处理、机器学习等.E-mail:fengxiang230316@163.com;陈志坤,男,1982年7月出生,福建漳州人,现为哈尔滨工业大学博士研究生,主要研究方向为雷达信号处理、电子侦察技术.E-mail:chih_quinn_chen@yeah.net;李风从,男,1985年12月出生,湖北黄石人.博士,现为湖北工业大学讲师.主要研究方向为自适应信号处理.E-mail:xialulee@sina.com
- 基金资助:
- 国家自然科学基金 (No.61371181）

Phase-Coded Waveform Design via Relaxed Alternating Projection for MIMO Radar

FENG Xiang, CHEN Zhi-kun, LI Feng-cong, ZHAO Yi-nan

School of Electronics and Information Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China

Received:2015-03-30 Revised:2016-02-25 Online:2016-12-25 Published:2016-12-25
- Supported by:
- National Natural Science Foundation of China (No.61371181)

摘要/Abstract

摘要：

任务场景日趋复杂给MIMO（Mutiple-Input Mutiple-Output）雷达带来诸多挑战.为应对强散射体遮蔽干扰、阵元间波形互扰及特定频带干扰等复杂电磁环境，该文提出一种松弛迭代谱拟合交替投影算法来设计相位编码波形.该算法基于功率谱拟合及交替投影框架，并引入扩展的加速因子；首先，凭借功率谱与非周期相关函数的傅里叶变换关系，将相关特性拟合问题转化为功率谱近似问题；然后，构建理想波形频谱并利用松弛机制扩展优化投影区；最后，利用快速傅里叶变换及加速交替投影机制迭代优化.计算机仿真表明，该算法运算效率高、可有效避免局部停滞，与当前流行算法相比更适合在线波形设计.

关键词: MIMO雷达, 波形设计, 功率谱逼近, 相位编码, 交替投影

Abstract:

The sophisticated scenarios always challenge MIMO(Mutiple-Input Mlitiple-Output) radar.A relaxed iterative spectrum approximation alternating projection method (RISAAP) is proposed to design phase-coded waveforms,for suppressing high range sidelobes of strong scatters,electromagnetic interference in specified frequencies and cross-interference from different signals.This method is based on power spectral density (PSD) approximation and alternating projection with extended accelerating factor.Firstly,the correlation fitting is transformed into PSD approximation via FFT between the aperiodic correlation function and PSD.Secondly,the desired spectrum constraint is formulated and the projection space is expanded by its relaxed mechanism.Finally,the iterative optimization is conducted via FFT and accelerated alternating projection.Simulations demonstrate that this method could obtain efficient performance and avoid local stagnation which seems more convenient for waveform design on-the-fly than some prevalent algorithms.

Key words: MIMO radar, waveform design, power spectral density approximation, phase-coded, alternating projection

中图分类号:

TN957.51

冯翔, 陈志坤, 李风从, 等. 基于松弛交替投影的MIMO雷达相位编码波形设计[J]. 电子学报, 2016, 44(12): 2981-2988.

FENG Xiang, CHEN Zhi-kun, LI Feng-cong, et al. Phase-Coded Waveform Design via Relaxed Alternating Projection for MIMO Radar[J]. Acta Electronica Sinica, 2016, 44(12): 2981-2988.

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基于松弛交替投影的MIMO雷达相位编码波形设计

Phase-Coded Waveform Design via Relaxed Alternating Projection for MIMO Radar

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