AN ALTERNATIVE RANGE MIGRATION CORRECTION ALGORITHM FOR FOCUSING MOVING TARGETS

被引：6

作者：

Kirkland, D. ^{[1
]}

机构：

[1] Def R&D Canada Ottawa, Ottawa, ON K1A 0Z4, Canada

来源：

PROGRESS IN ELECTROMAGNETICS RESEARCH-PIER | 2012年 / 131卷

关键词：

ADAPTIVE NOTCH FILTER; CONSTRAINED POLES; SAR; RADAR; GMTI; ZEROS;

D O I：

10.2528/PIER12060711

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：

This paper presents a method for focusing a moving target in single channel SAR data utilizing a novel technique for range migration correction. The First Order Keystone transform is first applied to remove the range-walk of the moving target signature. A search procedure based on maximizing a contrast cost function is then employed to determine the phase correction which compensates for the remaining range curvature. Finally an adaptive notch filter is used to construct an estimate of the azimuth compression filter necessary to focus the moving target. An experimental result is provided for airborne SAR data to demonstrate the feasibility of the approach.

引用

页码：227 / 241

页数：15

共 21 条

[1] Autofocusing of SAR images based on the product high-order ambiguity function [J].