New Approach for Unambiguous High-Resolution Wide-Swath SAR Imaging
文献类型：期刊论文
| 作者 | Lin, Yueguan1,2; Fan, Yida1,2; Jiang, Hai3 ; Wang, Wei1,2
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| 刊名 | INTERNATIONAL JOURNAL OF ANTENNAS AND PROPAGATION
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| 出版日期 | 2014 |
| 英文摘要 | The high-resolution wide-swath (HRWS) SAR system uses a small antenna for transmitting waveform and multiple antennas both in elevation and azimuth for receiving echoes. It has the potential to achieve wide spatial coverage and fine azimuth resolution, while it suffers from elevation pattern loss caused by the presence of topographic height and impaired azimuth resolution caused by nonuniform sampling. A new approach for HRWS SAR imaging based on compressed sensing (CS) is introduced. The data after range compression of multiple elevation apertures are used to estimate direction of arrival (DOA) of targets via CS, and the adaptive digital beamforming in elevation is achieved accordingly, which avoids the pattern loss of scan-on-receive (SCORE) algorithm when topographic height exists. The effective phase centers of the system are nonuniformly distributed when displaced phase center antenna (DPCA) technology is adopted, which causes Doppler ambiguities under traditional SAR imaging algorithms. Azimuth reconstruction based on CS can resolve this problem via precisely modeling the nonuniform sampling. Validation with simulations and experiment in an anechoic chamber are presented. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000335018400001 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/6508]  |
| 专题 | 国家天文台_应用天文研究部 |
| 作者单位 | 1.MCA, Natl Disaster Reduct Ctr China, Beijing 100124, Peoples R China 2.Key Lab Disaster Reduct & Emergency Response Engn, Beijing 100124, Peoples R China 3.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lin, Yueguan,Fan, Yida,Jiang, Hai,et al. New Approach for Unambiguous High-Resolution Wide-Swath SAR Imaging[J]. INTERNATIONAL JOURNAL OF ANTENNAS AND PROPAGATION,2014. |
| APA | Lin, Yueguan,Fan, Yida,Jiang, Hai,&Wang, Wei.(2014).New Approach for Unambiguous High-Resolution Wide-Swath SAR Imaging.INTERNATIONAL JOURNAL OF ANTENNAS AND PROPAGATION. |
| MLA | Lin, Yueguan,et al."New Approach for Unambiguous High-Resolution Wide-Swath SAR Imaging".INTERNATIONAL JOURNAL OF ANTENNAS AND PROPAGATION (2014). |
入库方式： OAI收割
来源：国家天文台
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