NEW AUTOFOCUSING TECHNIQUE FOR SAR IMAGES BASED ON THE WIGNER-VILLE DISTRIBUTION

被引：7
|
作者：
BARBAROSSA, S
机构：
[1] INFO-COM Department, University of Rome ̀La Sapienzá, Rome, Via Eudossiana 18
来源：
ELECTRONICS LETTERS | 1990年 / 26卷 / 18期
关键词：
D O I：
10.1049/el:19900984
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
High resolution images can be obtained with synthetic aper ture radars, by exploiting the motion between the air craft carrying the radar and the observed scene, if the relative motion parameters are known exactly. There exist some techniques for estimating these parameters from the collected data, but only for specific cases (linear and quadratic phase error). A technique for compensating phase errors whatever their time variation is proposed. The proposedtechnique is based on a joint time-frequency analysis of the received signal, carried out using the Wigner-Ville distribution. © 1990, The Institution of Electrical Engineers. All rights reserved.
引用
收藏
页码：1533 / 1534
页数：2
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