跳頻脈沖雷達目標的距離-多普勒成像
RANGE-DOPPLER IMAGING OF TARGETS VIA A HOPPED-FREQUENCY PULSES RADAR
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摘要: 該文采用跳頻脈沖信號作為成像雷達信號形式,研究了一種雷達等效轉(zhuǎn)臺目標距離-多普勒成像的新算法。與常規(guī)步進頻率雷達傅里葉變換成像算法相比,該算法具有多普勒不模糊范圍大的特點,因而克服了步進頻率雷達成像算法容易產(chǎn)生多普勒混疊的缺點。計算機仿真結(jié)果表明了該算法的有效性。
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關(guān)鍵詞:
- 跳頻脈沖; 雷達成像; 距離-多普勒像
Abstract: With adoption of the hopped-frequency pulses as a radar waveform for imaging targets,a novel algorithm for range-Doppler imaging of rotating targets is proposed.Compared with the stepped-frequency radar Fourier transform(FT) imaging algorithm,the algorithm is characterized by large unambiguous Doppler window that eliminates Doppler confusion occasionally arising via the stepped-frequency radar FT imaging algorithm.Computer simulation results are given to confirm the effectiveness of the proposed algorithm. -
Wehner D R.High-Resolution Radar (2nd ed.).London:Artech House,1994,Chapt.5,Chapt.6,Chapt.7.［2］劉崢，張守宏．頻率編碼脈沖信號的模糊函數(shù)與編碼優(yōu)化．系統(tǒng)工程與電子技術(shù)，1999，21(11)：38-40．[2]Ausherman D A,Kozma A,et al.Developments in radar imaging.IEEE Trans.on AES,1984,AES-20(4):363-399.[3]Mitchell R L.Models of extended targets and their coherent radar images[J].Proc.IEEE.1974,62(6):754-758[4]劉崢，張守宏．跳頻脈沖雷達目標的運動參數(shù)估計．電子科學學刊，2000,22(3)．591-596. -
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