宽带认知雷达低峰均比波形快速设计算法

doi:10.7527/S1000-6893.2015.0125

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宽带认知雷达低峰均比波形快速设计算法

唐波

电子工程学院504教研室, 合肥 230037

收稿日期:2015-01-27 修回日期:2015-05-05 出版日期:2016-02-15 发布日期:2015-05-25
通讯作者: 唐波,男,博士,讲师。主要研究方向:自适应雷达信号处理及波形设计。Tel:0551-65927461,E-mail:tangbo06@gmail.com E-mail:tangbo06@gmail.com
基金资助:
国家自然科学基金(61201379);安徽省自然科学基金(1208085QF103,1608085MF123)

Efficient design algorithm of low PAR waveform for wideband cognitive radar

TANG Bo

Lab 504, Electronic Engineering Institute, Hefei 230037, China

Received:2015-01-27 Revised:2015-05-05 Online:2016-02-15 Published:2015-05-25
Supported by:
National Natural Science Foundation of China(61201379);Anhui Provincial Natural Science Foundation(1208085QF103,1608085MF123)

摘要/Abstract

摘要：

发射波形设计是宽带认知雷达系统的关键技术。为了提高宽带认知雷达系统对距离扩展目标的检测性能,建立了目标检测模型,分析了系统的检测性能,在此基础之上研究了基于最大输出信干噪比(SINR)的低峰均比(PAR)波形设计算法。通过将原波形优化问题等效为接收权值与低峰均比波形的联合优化问题,同时利用循环优化的思想,提出了一种低峰均比波形快速设计算法。相比于现有的梯度法以及凸优化算法,该算法所设计的恒模波形信干噪比与二者相当,但算法实现难度明显变小,计算复杂度明显降低。仿真结果证实了算法的有效性。

关键词: 宽带认知雷达, 距离扩展目标, 波形设计, 低峰均比(PAR)波形, 输出信干噪比(SINR), 循环优化

Abstract:

Transmit waveform design is a key technique in wideband cognitive radar. In order to improve the detection performance of range spread targets for wideband cognitive radar system, a target detection model is established. Then the detection performance associated with the signal model is analyzed. Afterward, the design method of low peak-to-average power ratio(PAR) waveform is studied based on maximizing signal-to-interference-plus-noise ratio(SINR). In the development of the proposed algorithm, the original waveform optimization problem is tackled by considering its equivalent form, which is a joint design problem of low PAR waveform and receiving filter. Based on the idea of cyclic optimization, an efficient design method for low PAR waveform is proposed. The output SINR of the designed constant envelope waveform is similar to that of the existing gradient descent method and convex optimization method. However, the proposed algorithm is much easier to implement and has considerably lower computational complexity. The effectiveness of the proposed algorithm is verified by the numerical simulations.

Key words: wideband cognitive radar, range spread target, waveform design, low peak to average power ratio(PAR) waveform, signal to interference plus noise ratio(SINR), cyclic optimization

中图分类号:

唐波. 宽带认知雷达低峰均比波形快速设计算法[J]. 航空学报, 2016, 37(2): 688-694.

TANG Bo. Efficient design algorithm of low PAR waveform for wideband cognitive radar[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2016, 37(2): 688-694.

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E-mail：hkxb@buaa.edu.cn

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主管单位：中国科学技术协会主办单位：中国航空学会北京航空航天大学

宽带认知雷达低峰均比波形快速设计算法

Efficient design algorithm of low PAR waveform for wideband cognitive radar

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