基于線性調(diào)頻步進(jìn)信號(hào)的ISAR成像技術(shù)研究
Research on ISAR Imagimg Based on Linearly Modulated Frequency Stepped Radar Signal
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摘要: 分析了線性調(diào)頻步進(jìn)雷達(dá)信號(hào)(LMFS)的形式及成像的特點(diǎn),利用對(duì)雷達(dá)發(fā)射信號(hào)的設(shè)計(jì),提出了此類信號(hào)切實(shí)可行的運(yùn)動(dòng)補(bǔ)償方案;提出了兩種形成延展目標(biāo)ISAR像的拼接方法;最后通過實(shí)測(cè)數(shù)據(jù)驗(yàn)證所提運(yùn)動(dòng)補(bǔ)償方法的有效性并通過仿真驗(yàn)證了所提ISAR像拼接方法的正確性。Abstract: The features of the linearly modulated frequency stepped radar signal (LMFS) and imaging based on it are analyzed. A feasible scheme of target motion compensation is proposed by using designation of radar transmitting signal; ISAR image is achieved by two methods of ISAR image combination for LMFS. The effectiveness of the scheme of target motion compensation is shown by the theoretical analysis and processing of the practical data, and the effectiveness of these methods of ISAR image combination are shown by the theoretical analysis and computer simulation.
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