黄勇1,,,
陈宝欣2,
关键1,,,
蔡咪3,
陈小龙1
1.海军航空大学 烟台 264000
2.92337部队 大连 116000
3.91321部队 金华 321000
基金项目:国家自然科学基金(61871391, U1933135),国防科技基金(2019-JCJQ-JJ-058),山东省高等学校青创科技支持计划(2019KJN026),山东省自然科学基金(ZR202102190211)
详细信息
作者简介:裴家正(1994–),男,河南郑州人,海军航空大学博士研究生,主要研究方向为雷达弱小目标检测、多维信号联合处理
黄勇:黄 勇(1979–),男,湖南汨罗人,海军航空大学副教授,主要研究方向为MIMO雷达目标检测算法等
陈宝欣(1990–),男,山东烟台人,博士,工程师,主要研究方向为阵列信号处理、雷达多维信号处理
关键:关 键(1968–),男,辽宁锦州人,教授,博士生导师,主要研究方向为海上目标探测、雷达海杂波特性和弱目标检测。新世纪百千万人才工程国家级人选,曾获国家科技进步奖二等奖一项、省部级一等奖4项
蔡咪:蔡 咪(1994–),女,江西丰城人,硕士,助理工程师,主要研究方向计算机视觉
陈小龙(1985–),男,山东烟台人,海军航空大学副教授,主要研究方向为雷达动目标检测、海杂波抑制、雷达信号精细化处理等。
通讯作者:黄勇 huangyong_2003@163.com
关键 guanjian_68@163.com
责任主编:罗丰 Corresponding Editor: LUO Feng中图分类号:TN958.2
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被引次数:0
出版历程
收稿日期:2021-05-28
修回日期:2021-08-17
网络出版日期:2021-08-30
刊出日期:2021-12-28
Long Time Coherent Integration Method Based on Combining Pulse Compression and Radon-Fourier Transform
PEI Jiazheng1,HUANG Yong1,,,
CHEN Baoxin2,
GUAN Jian1,,,
CAI Mi3,
CHEN Xiaolong1
1. Naval Aviation University, Yantai 264000, China
2. 92337 Troop of PLA, Dalian 116000, China
3. 91321 Troop of PLA, Jinhua 321000, China
Funds:The National Natural Science Foundation of China (61871391, U1933135), The National Defense Science Foundation under Grant (2019-JCJQ-JJ-058), Shandong Province Higher Education Youth Innovation Science and Technology Support Program (2019KJN026), Shandong Provincial Natural Science Foundation, grant number (ZR202102190211)
More Information
Corresponding author:HUANG Yong, huangyong_2003@163.com;GUAN Jian, guanjian_68@163.com
摘要
摘要:传统相干雷达信号处理流程中先脉冲压缩再相参处理的级联处理在理论上无法实现对高速目标回波能量的最大化积累,级联处理的输出结果中目标峰值位置存在偏差,甚至还伴随主瓣展宽、增益下降、旁瓣增高的问题。为此该文提出一种联合脉压与Radon傅里叶变换(PC-RFT)的长时间相参积累方法,利用信号之间的相关关系将匹配滤波与Radon傅里叶变换相结合,在快时间(脉内时间)与慢时间(脉间时间)维度上同时补偿脉内和脉间的多普勒频移,从而实现目标增益的最大化。实验表明二维联合处理的性能明显优于级联处理。
关键词:脉冲压缩/
Radon傅里叶变换/
长时间相参积累/
脉内多普勒频率/
二维联合处理
Abstract:In the traditional coherent radar signal processing, the cascaded processing with pulse compression followed by coherent integration cannot achieve the maximum accumulation of high-speed target’s echo energy in theory. In addition, the result of the cascaded processing is characterized by deviation in the target peak position, accompanied by problems, such as the broadening of the main lobe, a decrease in the gain, and an increase in the side lobes. Therefore, this paper proposes a long time coherent integration method combining Pulse Compression and Radon-Fourier Transform (PC-RFT). This method utilizes the correlation between signals to combine matched filter and RFT. To maximize the target gain, the fast time (intra-pulse time) and slow time (inter-pulse time) dimensions are combined to compensate for the intra-pulse and inter-pulse Doppler shifts. The experimental results show that the two-dimensional joint processing outperforms the cascaded processing.
Key words:Pulse compression/
Radon-Fourier transform/
Long time coherent integration/
Intra-pulse Doppler frequency/
Two-dimensional joint processing
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