基于SAR实测数据的舰船成像研究
doi: 10.3724/SP.J.1146.2005.00738
Study on Ship Imaging Using SAR Real Data
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摘要: 该文基于机载SAR实测数据，对舰船目标成像进行了研究。SAR成像是针对静止目标，舰船目标表现在SAR图像上是散焦的。基于舰船目标的非合作性，可采用ISAR的方法对其进行成像处理，以得到高分辨的舰船图像。该文介绍了如何从SAR实测数据中提取出舰船目标的回波数据，并讨论了对舰船成像比较有效的ISAR运动补偿方法。最后给出了多艘典型舰船的清晰成像结果。该文提供了机载雷达SAR模式工作时对舰船成像的有效处理方法。Abstract: Ship ISAR imaging is studied in the paper based on the airborne SAR real data. SAR imaging deals with static targets. A moving ship appears blurred in the SAR image. For the purpose of getting high resolution ship images, ISAR imagery may be introduced into the imaging due to the non-cooperative character of the ship target. In the paper, the extraction of ship data from SAR real data is described firstly. Then, effective ISAR motion compensation methods appropriate to ship imaging are discussed. Finally, clear images of several typical ships are presented. This work provides effective processing methods for ship imaging when the airborne radar works in SAR mode.
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