基于Chirp Z变换的海面目标帧间非相参积累技术

doi:10.12305/j.issn.1001-506X.2021.02.13

系统工程与电子技术 ›› 2021, Vol. 43 ›› Issue (2): 383-389.doi: 10.12305/j.issn.1001-506X.2021.02.13

基于Chirp Z变换的海面目标帧间非相参积累技术

王宁^1,²(), 周明^1,²(), 刘国庆^1,²(), 杨予昊^1,²(), 孙俊^1,²()

1. 南京电子技术研究所, 江苏南京 210039
2. 中国电子科技集团公司智能感知技术重点实验室, 江苏南京 210039

收稿日期:2020-04-20 出版日期:2021-02-01 发布日期:2021-03-16
作者简介:王宁(1986-),男,高级工程师,博士,主要研究方向为雷达信号处理和目标检测。E-mail:wangnsky@qq.com|周明(1988-),男,高级工程师,博士,主要研究方向为雷达信号处理和杂波抑制。E-mail:zhouming12@cetc.com.cn|刘国庆(1987-),男,高级工程师,博士,主要研究方向为雷达信号处理与目标检测。E-mail:liuguoqing3@cetc.com.cn|杨予昊(1984-),男,高级工程师,博士,主要研究方向为雷达信号处理和目标识别。E-mail:yangyuhao@cetc.com.cn|孙俊(1974-),男,研究员,博士,主要研究方向为雷达信号处理与目标识别。E-mail:sunjun1@cetc.com.cn
基金资助:
国家自然科学基金(U19B2031)

Interframe noncoherent integration technology based on Chirp Z transform for sea surface target

Ning WANG^1,²(), Ming ZHOU^1,²(), Guoqing LIU^1,²(), Yuhao YANG^1,²(), Jun SUN^1,²()

1. Nanjing Research Institute of Electronics Technology, Nanjing 210039, China
2. Key Laboratory of Intellisense Technology, China Electronics Technology Group Corpration, Nanjing 210039, China

Received:2020-04-20 Online:2021-02-01 Published:2021-03-16

摘要/Abstract

摘要：

为提升雷达对海面微弱目标的探测能力,提出基于Chirp Z变换的多圈扫描帧间非相参积累技术。首先,建立多圈扫描采用不同载频时的雷达回波信号模型。然后,提出基于Chirp Z变换的运动目标帧间多普勒校正和距离走动补偿方法,使得多圈扫描数据经过处理后,目标出现在相同的距离-多普勒检测单元内,从而可以直接进行帧间的非相参积累,实现对微弱目标检测性能的提升。最后,结合仿真试验和实测数据,验证了所提方法的有效性。

关键词: 海面目标检测, 检测前跟踪, 非相参积累, Chirp Z变换

Abstract:

In order to improve the detection ability of radar to weak target on the sea surface, a noncohe-rent integration technology based on Chirp Z transform is proposed. Firstly, the radar echo signal model with different carrier frequencies in multiple cycle scanning is established. Then, a method of interframe Doppler correction and range walk compensation for moving targets based on Chirp Z transform is proposed, which makes the target appear in the same range-Doppler detection unit after processing the multiple cycle scanning data, so that the interframe noncoherent integration can be carried out directly, and the performance of weak target detection can be improved. Finally, the effectiveness of the proposed method is verified by the simulation test and the measured data.

Key words: sea surface target detection, track before detect, noncoherent integration, Chirp Z transform

中图分类号:

TN957.51

王宁, 周明, 刘国庆, 杨予昊, 孙俊. 基于Chirp Z变换的海面目标帧间非相参积累技术[J]. 系统工程与电子技术, 2021, 43(2): 383-389.

Ning WANG, Ming ZHOU, Guoqing LIU, Yuhao YANG, Jun SUN. Interframe noncoherent integration technology based on Chirp Z transform for sea surface target[J]. Systems Engineering and Electronics, 2021, 43(2): 383-389.

图/表 5

参考文献 25

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基于Chirp Z变换的海面目标帧间非相参积累技术

Interframe noncoherent integration technology based on Chirp Z transform for sea surface target

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