距离-多普勒方法中的几种插值算法比较
Comparison of Several Interpolation Algorithms in Range-Doppler Method
-
摘要: 在高分辨率合成孔径雷达(SAR)信号处理中,距离迁移校正是成像处理的关键步骤。距离-多普勒(R-D)方法在R-D域中通过插值处理来完成迁移校正。本文首先对距离迁移问题进行分析,然后研究R-D方法中常用的三种插值算法:最邻域近似、拉格朗日插值和sinc插值,给出它们的一般表达式,比较其运算量;最后通过计算机仿真,以点目标为例,分析它们对成像结果的影响。Abstract: Range migration correction (RMC) is an important procedure in high resolution synthetic aperture radar signal processing. Range-Doppler method carries out RMC by interpolation in range-Doppler domain. This paper first analyzes the range migration problem, makes research on three common used interpolation algorithms: nearest neighbor approxima-tion, Lagrange polynornial interpolation and sinc function interpolation. The general formulas of three algorithms are presented. Their calculating volume is compared. Finally, the computer imaging simulations of point target are used to analyze the algorithms effect on resulted image.
-
Wu C, et al., Modeling and a correlation algorithm for spaceborne SAR signals, IEEE Trans. on AES., 1982, AES-18(5), 563-574.[2]R.K. Raney, H. Runge, R. Bamler, I. G. Cumming, F. H. Wong, Precision SAR processing using chirp scaling, IEEE Trans. on GRS., 1994, GRS-32(4), 786-799.[3]禹卫东,合成孔径雷达信号处理研究,博士学位论文,南京,南京航空航天大学,1997,第四章.[4]徐士良,计算机常用算法,北京,清华大学出版社,1995,177-178. 期刊类型引用(2)
1. 王玮, 苏琦, 刘荫, 周伟, 于展鹏, 穆林. 基于云存储的异构海量数据搜索平台设计. 信息技术. 2017(06): 166-169 . 
百度学术2. 陈亮, 孟李林. 分组交换中一种存储管理方案的设计与实现. 西安邮电学院学报. 2011(06): 31-34 . 百度学术其他类型引用(0)
-
百度学术
计量
- 文章访问数: 2847
- HTML全文浏览量: 146
- PDF下载量: 652
- 被引次数: 2
下载:
