Interferometric SAR imaging by transmitting stepped frequency chaotic noise signals
文献类型：会议论文
| 作者 | Zhang, Yunhua ; Gu, Xiang; Zhai, Wenshuai; Dong, Xiao; Shi, Xiaojin; Kang, Xueyan
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| 出版日期 | 2015 |
| 会议名称 | Conference on SAR Image Analysis, Modeling, and Techniques XV |
| 会议日期 | SEP 23-24, 2015 |
| 会议地点 | Toulouse, FRANCE |
| 关键词 | Interferometric SAR noise radar interferometric phase digital elevation model stepped frequency chaotic noise signal compressive sensing subsampling |
| 页码 | 96420M |
| 通讯作者 | Zhang, YH (reprint author), Chinese Acad Sci, Key Lab Microwave Remote Sensing, POB 8701, Beijing 100190, Peoples R China. |
| 英文摘要 | Noise radar has been applied in many fields since it was proposed more than 50 years ago. However, it has not been applied to interferometric SAR imaging yet as far as we know. This paper introduces our recent work on interferometric noise radar. An interferometric SAR system was developed which can transmit both chirp signal and chaotic noise signal (CNS) at multiple carrier frequencies. An airborne experiment with this system by transmitting both signals was carried out, and the data were processed to show the capability of interferometric SAR imaging with CNS. The results shows that although the interferometric phase quality of CNS is degraded due to the signal to noise ratio (SNR) is lower compared with that of chirp signal, we still can get satisfied DEM after multi-looking processing. Another work of this paper is to apply compressed sensing (CS) theory to the interferometric SAR imaging with CNS. The CS theory states that if a signal is sparse, then it can be accurately reconstructed with much less sampled data than that regularly required according to Nyquist Sampling Theory. To form a structured random matrix, if the transmitted signal is of fixed waveform, then random subsampling is needed. However, if the transmitted signal is of random waveform, then only uniform subsampling is needed. This is another advantage of noise signal. Both the interferometric phase images and the DEMs by regular method and by CS method are processed with results compared. It is shown that the degradation of interferometric phases due to subsampling is larger than that of amplitude image. |
| 收录类别 | EI ; CPCI |
| 会议主办者 | SPIE |
| 会议录 | SAR IMAGE ANALYSIS, MODELING, AND TECHNIQUES XV
 |
| 语种 | 英语 |
| ISSN号 | 0277-786X |
| ISBN号 | 978-1-62841-852-1 |
| 源URL | [http://ir.nssc.ac.cn/handle/122/5368]  |
| 专题 | 国家空间科学中心_微波遥感部 |
| 推荐引用方式 GB/T 7714 | Zhang, Yunhua,Gu, Xiang,Zhai, Wenshuai,et al. Interferometric SAR imaging by transmitting stepped frequency chaotic noise signals[C]. 见:Conference on SAR Image Analysis, Modeling, and Techniques XV. Toulouse, FRANCE. SEP 23-24, 2015. |
入库方式： OAI收割
来源：国家空间科学中心
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