双基地isar舰船目标成像方法分析-(5525)

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1、哈尔滨工业大学工学硕士学位论文pointoninstantaneousfrequencyestimation.Thisrequiresspecialtime-frequencyanalysismethodwhichhavestrongerabilitytosuppressthecrosstermsandhightime-frequencyagglomeration.Forinstantaneousimagingalgorithm,thischapterselectseveraltypicallinearandbilineardistribution(STFT,SPEC,WVDandSPWD

2、).Throughtheoreticalanalysisand3dmotionofbistaticISARshipstargetimagingsimulationshowsthatinthedistribution,thespectra(SPEC)withouttheinfluenceofcrossterms,andasmallamountofcalculationandhasacertainpracticalvalue.Keywords：SinglebaseISAR;BistaticISAR;R-Dalgorithm;Ship3-drotation.；time-frequencyanal

3、ysis-III-哈尔滨工业大学工学硕士学位论文目录摘要......................................................................................................................IABSTRACT...........................................................................................................II第1章绪论.............................

4、....................................................................11.1课题背景及研究的目的和意义............................................................11.2国内外在该方向的研究现状及分析.....................................................31.2.1国外在该方向的研究情况................................................................

5、..31.2.2国内在该方向的研究情况..................................................................31.3本文的主要研究内容..........................................................................4第2章单基地ISAR成像原理.......................................................................62.1单基地ISAR转台模型.........................

6、................................................62.2ISAR成像中的二维分辨率...................................................................82.2.1距离向分辨率......................................................................................92.2.2方位向分辨率........................................................

7、..............................92.3ISAR成像算法...................................................................................102.4仿真结果..............................................................................