非合作无源双基地雷达弱目标长时间积累技术

钱李昌; 许稼; 胡国旭

doi:10.12000/JR16137

非合作无源双基地雷达弱目标长时间积累技术

DOI: 10.12000/JR16137

钱李昌^①,②, ,,
许稼^①,,
胡国旭^②,

①.
北京理工大学信息与电子学院北京 100081
②.
中国人民解放军95174部队武汉 430040

基金项目: 中国博士后科学基金(2016M591086)，国家自然科学基金(61271391, 61671061)，新世纪优秀人才支持计划(NCET-13-0049)，部委基金项目(9140A21050114HT05338)

详细信息

作者简介:
钱李昌(1985–)，男，江苏灌南人，北京理工大学博士后，主要研究方向为雷达目标探测与识别等。E-mail: qianlichang@bit.edu.cn

许　稼(1974–2017)，男，安徽绩溪人，北京理工大学教授，主要研究方向包括高分辨率成像、检测与估计、多源信息融合、电磁态势仿真、混沌非线性等。一直从事新体制雷达领域的科学研究。承担国家重大专项、自然科学基金、探索重大、863重点、行业支撑重点、预研领域重点基金等项目40余项。共发表SCI论文40余篇。入选英国工程技术学会会士、中国电子学会会士、教育部新世纪优秀人才、空军高层次人才、清华大学优秀博士后和北京理工大学杰出中青年教师。担任IET 2015国际雷达会议主席、中国电子学会学术工作委员会委员和《Electronics Letters》等9个国内外学术期刊编委。E-mail: xujia@bit.edu.cn

胡国旭(1987–)，男，河南南阳人，95174部队工程师，主要研究方向为雷达目标检测与跟踪等

通讯作者:
钱李昌 qianlichang@bit.edu.cn

中图分类号: TN957.51
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出版历程
- 收稿日期: 2016-12-02
- 修回日期: 2017-06-07
- 网络出版日期: 2017-06-28

Long-time Integration of a Multi-waveform for Weak Target Detection in Non-cooperative Passive Bistatic Radar

Qian Lichang^{①,②
, ,},
Xu Jia^{①
,},
Hu Guoxu^{②
,}

①.
School of Information and Electronic, Beijing Institute of Technology, Beijing 100081, China
②.
Troop 95174, People’s Liberation Army, Wuhan 430040, China

Funds: Supported by China Postdoctoral Science Foundation (2016M591086), The National Natural Science Foundation of China (61271391, 61671061), The Program for New Century Excellent Talents in University (NCET-13-0049), The National Ministries Foundation (9140A21050114HT05338)

摘要

摘要: 与常规体制雷达相比，空间、时间以及相位同步问题使得非合作双基地雷达(NPBR)中微弱目标探测难度更大。为此，该文给出了一种基于直达波波形参数估计的时间和相位同步方法以及基于捷变波形长时间相参积累的弱目标探测方法。首先，提出了一种基于差分索引的通用脉冲提取方法。其次，给出了脉冲宽度、脉冲重复间隔、带宽、载频以及波达时间等直达波脉冲参数的估计方法，实现了NPBR的时间和相位同步。然后，在波形参数估计的基础上，给出了一种基于捷变波形广义Radon-Fourier变换的弱目标探测算法。最后，仿真和实测数据实验验证了该文算法的有效性。
- 非合作无源双基地雷达 /
- 微弱目标 /
- 相参积累 /
- 捷变波形估计 /
- 广义Radon-Fourier变换
Abstract: Space, time, and phase synchronization problems make weak target detection evenmore difficult in the Non-cooperative Passive Bistatic Radar (NPBR) than in conventional radar systems. Therefore, a time and phase synchronization method based on direct waveform parameter estimation and a weak target detection method based on long time coherent integration of a multi-waveform is presented in this paper. First, a universal pulse extraction method based on differential sequence indexing is proposed. Second, an estimation method for the direct waveform parameters, including pulse width, pulse repetition intervals, bandwidth, carrier frequency, and arrival time, is provided. Therefore, by using the estimated waveform parameters, the NPBR time and phase synchronization can be realized. Moreover, based on the waveform parameter estimation, a weak target detection method based on the generalized Radon-Fourier transform of a multi-waveform is provided. Finally, simulation and real data experiments for verifying the effectiveness of the waveform parameter estimation and weak target detection methods are provided.
- Non-cooperative Passive Bistatic Radar (NPBR) /
- Weak target /
- Coherent integration /
- Multi-waveform estimation /
- Generalized Radon Fourier Transform (GRFT)

HTML全文

图 1 NPBR示意图

Figure 1. Sketch map of NPBR

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图 2 直达波参数估计流程图

Figure 2. Flow chart of parameter estimation of the direct waveform

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图 3 算法流程

Figure 3. Flowchart of the algorithm

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图 4 原始直达波信号

Figure 4. Original signal of the direct waveform

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图 5 脉冲提取结果

Figure 5. Pulse extraction result

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图 6 目标回波脉冲压缩结果

Figure 6. Echo pulse compression result

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图 7 MTD结果

Figure 7. MTD result

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图 8 时间相位同步后相参积累结果

Figure 8. Coherent integration result after time and phase synchronization

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图 9 目标回波脉冲压缩

Figure 9. Echo pulse compression result

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图 10 弱目标轨迹探测结果

Figure 10. Weak target trace detection result

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图 11 积累SNR比较

Figure 11. SNR comparisons

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参考文献(13)

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