基于短時(shí)稀疏時(shí)頻分布的雷達(dá)目標(biāo)微動(dòng)特征提取及檢測方法

陳小龍; 關(guān)鍵; 于曉涵; 何友

doi:10.11999/JEIT161040

基于短時(shí)稀疏時(shí)頻分布的雷達(dá)目標(biāo)微動(dòng)特征提取及檢測方法

doi: 10.11999/JEIT161040 cstr: 32379.14.JEIT161040

1.
(海軍航空工程學(xué)院電子信息工程系煙臺 264001) ②(海軍航空工程學(xué)院信息融合研究所煙臺 264001)

基金項(xiàng)目:

國家自然科學(xué)基金(61501487, 61401495, U1633122, 61471382, 61531020)；山東省自然科學(xué)基金(2015ZRA06052)；航空基金(20162084005, 20162084006, 20150184003)；泰山學(xué)者和中國科協(xié)青年人才托舉工程專項(xiàng)經(jīng)費(fèi)資助

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- 文章訪問數(shù): 1906
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- 被引次數(shù): 0
出版歷程
- 收稿日期: 2016-10-08
- 修回日期: 2017-01-13
- 刊出日期: 2017-05-19

Radar Micro-Doppler Signature Extraction and Detection via Short-time Sparse Time-frequency Distribution

1.
(Department of Electronic and Information Engineering, Naval Aeronautical and Astronautical University,Yantai 264001, China)
2.
(Institute of Information Fusion, Naval Aeronautical and Astronautical University, Yantai 264001, China)

Funds:

The National Natural Science Foundation of China (61501487, 61401495, U1633122, 61471382, 61531020), The Natural Science Foundation of Shandong Province (2015ZRA 06052), The Aeronautical Science Foundation of China (20162084005, 20162084006, 20150184003), The Special Funds of Taishan Scholars of Shandong and Young Elite Scientist Program of CAST

摘要

摘要: 為有效提高強(qiáng)雜波及目標(biāo)復(fù)雜運(yùn)動(dòng)特性條件下的雷達(dá)動(dòng)目標(biāo)探測能力，該文結(jié)合時(shí)頻分布(TFD)類動(dòng)目標(biāo)檢測和稀疏表示方法的優(yōu)勢，建立了短時(shí)稀疏TFD(ST-STFD)原理框架，提出短時(shí)稀疏傅里葉變換(ST-SFT)和短時(shí)稀疏分?jǐn)?shù)階傅里葉變換(ST-SFRFT)雷達(dá)動(dòng)目標(biāo)檢測方法，并應(yīng)用于海上目標(biāo)微動(dòng)特征提取及檢測中。實(shí)測雷達(dá)數(shù)據(jù)驗(yàn)證表明，該方法在時(shí)間-稀疏域能夠?qū)崿F(xiàn)時(shí)變信號的高分辨低復(fù)雜度時(shí)頻表示，具有運(yùn)算效率高、時(shí)頻分辨好、抗雜波等優(yōu)點(diǎn)，為進(jìn)一步提升雷達(dá)雜波抑制和動(dòng)目標(biāo)檢測能力提供了新的思路和途徑。
- 動(dòng)目標(biāo)檢測 /
- 海上目標(biāo) /
- 微多普勒 /
- 時(shí)頻分布 /
- 稀疏表示
Abstract: In order to effectively improve radar detection ability of moving target under the conditions of strong clutter and complex motion characteristics, the principle framework of Short-Time sparse Time-Frequency Distribution (ST-TFD) is established combing the advantages of TFD-based moving target detection and sparse representation. Then, Short-Time Sparse Fourier Transform (ST-SFT) and Short-Time Sparse FRactional Fourier transform (ST-SFRFT)-based radar moving target detection methods are proposed and applied to micro-Doppler signature extraction and detection of marine target. It is verified by real radar data that the proposed methods can achieve high-resolution and low complexity TFD of time-varying signal in time-sparse domain, and has the advantages of high efficiency, good time-frequency resolution, anti-clutter, and so on. It can be expected that the proposed methods can provide a novel solution for radar clutter suppression and moving target detection.
- Moving target detection /
- Marine target /
- Micro-Doppler /
- Time-Frequency Distribution (TFD) /
- Sparse representation

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參考文獻(xiàn)(16)

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