https://scholars.lib.ntu.edu.tw/handle/123456789/631005
標題: | Dual-Channel Airborne SAR Imaging of Ground Moving Targets on Perturbed Platform | 作者: | Wu, Dau Ming JEAN-FU KIANG |
關鍵字: | Azimuth | compressive sensing (CS) | dual-channel | focusing | fractional Fourier transform (FrFT) | ground moving target (GMT) | Perturbation methods | platform trajectory deviation (PTD) | Radar | Radar imaging | Radar polarimetry | range-frequency reversal transform (RFRT) | Synthetic aperture radar | Synthetic aperture radar (SAR) | Trajectory | 公開日期: | 1-一月-2023 | 卷: | 61 | 來源出版物: | IEEE Transactions on Geoscience and Remote Sensing | 摘要: | A dual-channel airborne SAR imaging approach is proposed to acquire well focused images of ground moving targets after compensating the platform trajectory deviation. The phase error attributed to either platform trajectory deviation or target motion is given by a polynomial of slow time. The SAR image before motion compensation is segmented into multiple sub-images, and a compressive-sensing (CS) technique is applied on each sub-image to estimate the polynomial coefficients featuring platform trajectory deviation. A range-frequency reversal transform (RFRT) and fractional Fourier transform (FrFT) are combined to estimate the motion parameters and position of each moving target. The proposed approach is verified with real data and simulated data, respectively, and the moving targets in the acquired image are well recognized. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/631005 | ISSN: | 01962892 | DOI: | 10.1109/TGRS.2023.3265408 |
顯示於: | 電機工程學系 |
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