Migration Through Resolution Cell Compensation in ISAR Imaging

被引：179

作者：

Xing, Mengdao ^{[1
]}

Wu, Renbiao ^{[2
]}

Lan, Jinqiao ^{[1
]}

Bao, Zheng ^{[1
]}

机构：

[1] Xidian Univ, Key Lab Radar Signal Proc, Shaanxi 710071, Peoples R China

[2] Civil Aviat Univ China, Inst Commun & Informat Proc, Tianjin 300300, Peoples R China

来源：

IEEE GEOSCIENCE AND REMOTE SENSING LETTERS | 2004年 / 1卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Inverse synthetic aperture radar (ISAR) imaging; range-Doppler (RD) imaging; range-instantaneous Doppler (RID) imaging;

D O I：

10.1109/LGRS.2004.824766

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：

Range-Doppler (RD) processing is widely used in conventional inverse synthetic aperture radar (ISAR) imaging. The unwanted translational motion of moving targets is compensated by envelope alignment and autofocus. For existing ISAR imaging algorithms, the scatterers' migration through resolution cells (MTRC) caused by the rotational motion is usually ignored. With the improvement of resolution or the increase of target size, MTRC cannot be neglected. In this letter, the keystone formatting algorithm developed in SAR is used for the MTRC compensation in ISAR. Before the keystone formatting, coherent processing must be performed on the raw phase history data. An effective approach is proposed for this kind of coherent processing. Numerical examples are provided to demonstrate the performance of the proposed approach.

引用

页码：141 / 144

页数：4

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