外場(chǎng)實(shí)測(cè)數(shù)據(jù)的艦船目標(biāo)ISAR成像
ISAR SHIP IMAGING OF REAL DATA
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摘要: 有關(guān)飛機(jī)目標(biāo)的ISAR成像國(guó)內(nèi)已有較深入的研究。對(duì)水面艦船的雷達(dá)成像在國(guó)防上同樣有重要意義,但國(guó)內(nèi)對(duì)艦船的ISAR成像的研究,基本上為空白狀態(tài)。雖然艦船成像與飛機(jī)成像在基本原理上沒(méi)有區(qū)別,但由于海水的波動(dòng),使艦船的姿態(tài)變化比較復(fù)雜,有必要作專門(mén)的研究。該文是作者利用外場(chǎng)實(shí)測(cè)數(shù)據(jù),針對(duì)艦船運(yùn)動(dòng)的特殊性,提出基于Clean的調(diào)幅-線性調(diào)頻(AM-LFM)信號(hào)參數(shù)估計(jì)的方法,獲得艦船目標(biāo)的距離-瞬時(shí)多普勒動(dòng)態(tài)像。
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關(guān)鍵詞:
- ISAR; 艦船成像; 調(diào)幅-線性調(diào)頻信號(hào)
Abstract: ISAR imaging of airplane has been researched thoroughly in China. But research on ISAR imaging for ship, which is also very important in national defense, is very little. Although the difference is little in principle between airplane imaging and ship imaging, the pose variation of ship is more complicate for the fluctuation of sea, so it need to be studied specially. This paper employs Range-Instantaneous Doppler Algorithm (RIDA) based on multicompo-nent Amplitude Modulation and Linear Frequency Modulation (AM-LFM) signal parameter estimation method to obtain good ship ISAR images from real data. -
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