用于目标检测的宽带雷达自适应波形设计方法

doi:10.3969/j.issn.1001-2400.2016.02.009

西安电子科技大学学报 ›› 2016, Vol. 43 ›› Issue (2): 46-51.doi: 10.3969/j.issn.1001-2400.2016.02.009

用于目标检测的宽带雷达自适应波形设计方法

吴旭姿;刘峥;谢荣

(西安电子科技大学雷达信号处理国家重点实验室，陕西西安 710071)

收稿日期:2014-10-29 出版日期:2016-04-20 发布日期:2016-05-27
通讯作者: 吴旭姿
作者简介:吴旭姿(1989-), 女, 西安电子科技大学博士研究生, E-mail: wuxuzi1989@163.com．
基金资助:
国家自然科学基金资助项目(61301282)

Adaptive waveform design for target detection in the wideband radar system

WU Xuzi;LIU Zheng;XIE Rong

(National Key Lab. of Radar Signal Processing, Xidian Univ., Xi'an 710071, China)

Received:2014-10-29 Online:2016-04-20 Published:2016-05-27
Contact: WU Xuzi

摘要/Abstract

摘要：

雷达可发射与目标高分辨距离像匹配的波形以提高检测性能，但匹配波形的自相关性能通常会严重退化，继而影响雷达参数估计性能．针对该问题，在考虑目标响应起伏变化的情况下，建立了包含确定分量和随机分量的目标距离像模型，并在推导了广义似然比检测器和波形优化函数的基础上，提出了一种波形设计方法．该方法以最大化信噪比和最小化均方误差为准则，通过循环迭代寻求优化波形．仿真结果表明，该方法可权衡估计与检测性能，使雷达通过在线更新目标距离像估值，逐步改善检测性能．

关键词: 雷达目标检测, 自适应波形设计, 高分辨距离像

Abstract:

The target detection performance of radar can be improved by transmitting a waveform which matches the high-resolution range profile (HRRP) of the target. However, a serious degradation of the autocorrelation property always occurs in the matched waveform, which has a bad effect on radar parameter estimation. To solve this problem, a generalized model of HRRP which consists of the deterministic term and random term is introduced under the consideration of variations in the target impulse response. Based on the study of the generalized likelihood ratio test (GLRT) detector and the objective functions for waveform design, an iterative algorithm with the criteria of maximizing the signal to noise ratio (SNR) and minimizing the minimum mean square error (MMSE) is proposed. Simulation results indicate that the design method can make a tradeoff between the performances of estimation and detection, and sequentially improve the detection performance based on the on-line estimates of the HRRP.

Key words: radar target detection, adaptive waveform design, high-resolution range profile

中图分类号:

TN957.51

吴旭姿;刘峥;谢荣. 用于目标检测的宽带雷达自适应波形设计方法[J]. 西安电子科技大学学报, 2016, 43(2): 46-51.

WU Xuzi;LIU Zheng;XIE Rong. Adaptive waveform design for target detection in the wideband radar system[J]. Journal of Xidian University, 2016, 43(2): 46-51.

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用于目标检测的宽带雷达自适应波形设计方法

Adaptive waveform design for target detection in the wideband radar system

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