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Content Provider | IET Digital Library |
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Author | Wang, Guanyong Zhang, Lei Li, Jun Hu, Qingrong |
Abstract | Aperture-dependent motion compensation (MOCO) is crucial for high-resolution airborne synthetic aperture radar (SAR) imaging, which can suppress image degradation especially for SAR systems working at a high-frequency waveband, such as millimetre-wave (MMW) SAR. The current precise topography and aperture (PTA) dependent MOCO algorithm aims to compensate the azimuth-dependent motion error by using a modified azimuth matched filtering. However, the matched filter is deduced with the principle of stationary phase without considering the effects from the azimuth-dependent motion errors, which limits its precision in focusing MMW SAR data involving severe motion errors. This study proposes a refined PTA algorithm with a precise post matched filter established by the method of series reversion. The range-variant characteristic of residual motion errors is also investigated for an improved precision. Simulated and real MMW SAR data sets are used to validate the effectiveness of the proposal. |
Starting Page | 204 |
Ending Page | 211 |
Page Count | 8 |
ISSN | 17518784 |
Volume Number | 11 |
e-ISSN | 17518792 |
Issue Number | Issue 1, Jan (2017) |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-rsn/11/1 |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-rsn.2016.0195 |
Journal | IET Radar, Sonar & Navigation |
Publisher Date | 2016-06-16 |
Access Restriction | Open |
Rights Holder | © The Institution of Engineering and Technology |
Subject Keyword | Filter And Other Network High-frequency Waveband High-resolution Airborne SAR Imaging High-resolution Synthetic Aperture Radar Imaging Matched Filter Millimetre Wave Radar MMW SAR Data Sets Modified Azimuth Matched Filtering Precise Aperture-dependent Motion Compensation Precise Topography And Aperture Dependent MOCO Algorithm Radar Equipment Radar Imaging Radar Resolution Refined PTA Algorithm Synthetic Aperture Radar System And Application |
Content Type | Text |
Resource Type | Article |
Subject | Electrical and Electronic Engineering |
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