[1]刘 峰,牟善祥,李文亮,等.时域校正距离走动大斜视ECS成像算法[J].南京理工大学学报(自然科学版),2013,37(05):748.
 Liu Feng,Mu Shanxiang,Li Wenliang,et al.Extended chirp scaling algorithm for high squint mode SAR with range-walk correction in time domain[J].Journal of Nanjing University of Science and Technology,2013,37(05):748.
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时域校正距离走动大斜视ECS成像算法
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
37卷
期数:
2013年05期
页码:
748
栏目:
出版日期:
2013-10-31

文章信息/Info

Title:
Extended chirp scaling algorithm for high squint mode SAR with range-walk correction in time domain
作者:
刘 峰1牟善祥1李文亮1李玉刚1杨作祥2翟宵汉2
1.南京理工大学 电子工程与光电技术学院,江苏 南京 210094; 2.中国人民解放军73908部队,江苏 南京 210037
Author(s):
Liu Feng1Mu Shanxiang1Li Wenliang1Li Yugang1Yang Zuoxiang2 Zhai Xiaohan2
1.School of Electronic Engineering and Optoelectronic Technology,NUST,Nanjing 210094,China; 2.No 73908 Unit of PLA,Nanjing 210037,China
关键词:
合成孔径雷达 距离走动校正 大斜视 扩展线频调变标成像算法
Keywords:
synthetic aperture radars range-walk correction high squint modes extended chirp scaling algorithm
分类号:
TN957.52
文献标志码:
A
摘要:
针对常规的线频调变标(CS)算法不能满足于大斜视情况和实时性要求的问题,该文提出一种改进的扩展线频调变标(ECS)成像算法。对斜视模式的回波特性进行了推导和分析,在时域进行距离走动校正,利用等效的ECS成像算法进行成像处理,并进行了仿真验证。结果表明,距离走动校正仅需要简单的相位相乘即可完成,计算量适中。仿真结果验证了算法的可行性和有效性。
Abstract:
In view of that the conventional chirp scaling algorithm can not satisfy the high squint mode and the simultaneousness,a generalized approach based on the extended chirp scaling algorithm is presented here.The echo features are derived and analysed thoroughly,the range-walk is removed in time domain,the imaging work using the extended chirp scaling algorithm is carried out,and the implementation of this approach is demonstrated.The results show that the range walk is corrected by simple phase multiplying with appropriate arithmetic quantum and the method is feasible and effective.

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备注/Memo

备注/Memo:
收稿日期:2012-07-09 修回日期:2012-11-14
基金项目:预研基金
作者简介:刘峰(1981-),男,博士生,主要研究方向:新体制雷达成像技术,E-mail:liufengnjust@gmail.com; 通讯作者:牟善祥(1953-),男,研究员,博士生导师,主要研究方向:高分辨率雷达与雷达成像技术,E-mail:sx5029@163.com。
更新日期/Last Update: 2013-10-31