Inverse-mapping filtering polar formation algorithm for high-maneuverability SAR with time-variant acceleration

被引：6

作者：

Li, Yachao ^{[1
]}

Song, Xuan ^{[1
]}

Guo, Liang ^{[1
]}

Mei, Haiwen ^{[1
]}

Quan, Yinghui ^{[1
]}

机构：

[1] Xidian Univ, Natl Lab Radar Signal Proc, Xian 710071, Peoples R China

来源：

SIGNAL PROCESSING | 2020年 / 171卷

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

High-maneuverability synthetic aperture radar; Polar formation algorithm; Time-variant acceleration; Geometric distortion correction; HIGH-SQUINT SAR; IMAGING ALGORITHM; BISTATIC SAR; RANGE MODEL; PHASE ERROR; SPECTRUM;

D O I：

10.1016/j.sigpro.2020.107506

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 investigates a new imaging algorithm for high-maneuverability synthetic aperture radar (HM-SAR) travels with high velocities and time-variant accelerations. To be specific, a more precise acceleration-separation-based equivalent range model (ASERM) is established, which can separate time-variant acceleration errors from the ideal linear range model. After 2-D spectral interpolation, a joint compensation method based on inverse-mapping and local filtering is constructed for compensating the space-variant motion error (ME) and image distortions caused by the time-variant acceleration. (C) 2020 Elsevier B.V. All rights reserved.

引用

页数：11

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