An Omega-K Algorithm for Highly Squinted Missile-Borne SAR With Constant Acceleration

被引：56
|
作者：
Tang, Shiyang [1 ]
Zhang, Linrang [1 ]
Guo, Ping [1 ]
Zhao, Yonghong [1 ]
机构：
[1] Xidian Univ, Natl Lab Radar Signal Proc, Xian 710071, Peoples R China
来源：
IEEE GEOSCIENCE AND REMOTE SENSING LETTERS | 2014年 / 11卷 / 09期
基金：
中国国家自然科学基金;
关键词：
Acceleration; highly squinted; missile-borne; omega-K algorithm; reference function multiplication (RFM); synthetic aperture radar (SAR); BISTATIC SAR;
D O I：
10.1109/LGRS.2014.2301718
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
This letter proposes an omega-K algorithm for missile-borne synthetic aperture radar (SAR) diving with constant acceleration. The essence of the novel method is to derive a reference function multiplication from the equivalent range history. The true range history is divided into two parts: range independent and range dependent. After compensating the range-independent part with considering all the terms, we can regard the range-dependent part as an equivalent range history with a form similar to that of conventional SAR. Then, an analytical 2-D spectrum can be used for the omega-K algorithm. The proposed algorithm can handle general missile configurations with wide swaths and high squint angles. Simulation results are presented to validate the proposed method.
引用
收藏
页码：1569 / 1573
页数：5
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