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Content Provider | IET Digital Library |
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Author | Li, Dong Liu, Hongqing Yang, Lisheng |
Abstract | Owing to the vulnerability of synthetic aperture radar (SAR) system to interferences, effective interference suppression has been an urgent task for SAR imaging. In this work, a novel time-varying narrowband interference and wideband interference suppression method is presented based on time-frequency reconstruction and mask technique. This method consists of four key stages. First, the authors present an efficient signal reconstruction method (ESRM) based on eigenvalue decomposition from the Wigner distribution. Next, echoes contaminated by the interference are identified in the frequency domain and the jamming components are obtained by using the mask technique in time-frequency plane. Then, the ESRM is applied to quickly and accurately synthesise interference signals by incorporating the principle of energy minimum without the need of the prior knowledge of the interference. Finally, the interference components are subtracted from the echoes in data domain, and the well-focused SAR image is obtained by conventional imaging algorithm. Results of simulated and measured data prove the validity of the proposed method. |
Starting Page | 827 |
Ending Page | 834 |
Page Count | 8 |
ISSN | 17518784 |
Volume Number | 9 |
e-ISSN | 17518792 |
Issue Number | Issue 7, Aug (2015) |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-rsn/9/7 |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-rsn.2014.0218 |
Journal | IET Radar, Sonar & Navigation |
Publisher Date | 2015-02-23 |
Access Restriction | Open |
Rights Holder | © The Institution of Engineering and Technology |
Subject Keyword | Data Domain Echo Echo Suppression Efficient Signal Reconstruction Method Eigen Values And Eigen Function Eigenvalue Decomposition Electromagnetic Compatibility ESRM Frequency Domain Interference Interference Component Jamming Component Linear Algebra Mask Technique Mathematical Analysis Numerical Analysis Optical, Image And Video Signal Processing Radar Equipment Radar Imaging SAR Imaging Signal Processing And Detection Signal Reconstruction Statistics Synthetic Aperture Radar Synthetic Aperture Radar Image System And Application Time-frequency Analysis Time-frequency Reconstruction Time-varying Interference Suppression Time-varying Narrowband Interference Urgent Task Wideband Interference Suppression Wigner Distribution |
Content Type | Text |
Resource Type | Article |
Subject | Electrical and Electronic Engineering |
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