High Azimuth Resolution Wide Swath Imaging Based on the Intrapulse Spotlight SAR

摘要：

With respect to the contradiction between high azimuth resolution and wide swath,the intrapulse spotlight synthetic aperture radar (SAR) mode is presented to achieve high azimuth resolution wide swath imaging.Firstly,the model of intrapulse spotlight SAR is established,and then the characteristic of echoes in this mode is analyzed in detail. A conclusion that the intrapulse scanning can make point targets in the different azimuth subswaths ambiguous is given. The degrees of freedom along the pitching direction are used to remove the range ambiguities.In the intrapulse spotlight SAR mode,the long synthetic aperture acquired by intrapulse scanning technique is used to realize high azimuth resolution.Meanwhile a low pulse repetition frequency (PRF) is adopted to achieve wide swath.Results of simulation show the effectiveness of this method.

关键词： synthetic aperture radar (SAR) spotlight SAR high azimuth resolution wide swath imaging intrapulse scanning

作者: Qisong Wu Mengdao Xing Hongzhu Shi Zheng Bao

作者单位: Key Laboratory for Radar Signal Processing,Xidian University,Xian,710071,China

会议类型: 国际会议

会议名称: 2009 2nd Asian-Pacific Conference on Synthetic Aperture Radar(第二届亚太合成孔径雷达会议)

会议地点: 西安

会议语种:英文

页码: 421-425

在线出版日期: 2009-10-26（万方平台首次上网日期，不代表论文的发表时间）