Application of super-sva to stepped-chirp radar imaging with frequency band gaps between subchirps
文献类型：期刊论文
| 作者 | Zhai, W; Zhang, Y, |
| 刊名 | Progress In Electromagnetics Research B
 |
| 出版日期 | 2011 |
| 期号 | 30页码:71-82 |
| ISSN号 | 1937-6472 |
| 通讯作者 | Zhai, W. (zhaiwenshuai@nmrs.ac.cn) |
| 中文摘要 | It is well-known that the stepped-frequency chirp signal (SFCS) technique is one of the very effective approaches for achieving high range resolution in radar [1-5]. The SFCS is a train of subchirp pulses with up-stepped or down-stepped carrier frequencies. However, there exists a rang-Doppler coupling problem (RDCP) when applying this signal to practical radar system because longer time is needed for transmitting a complete burst compared with that needed for transmitting just a single chirp. In radar system design, if carrier frequency step (Δf) can be larger than the bandwidth of subchirp (Bm), it will be very helpful for using less number of subchirps to obtain high resolution and at the same time reduce the inouence of RDCP on imaging quality. However, the spectrum of transmitted signal will not be continuous but with band gaps existing when Δf > Bm, and it will lead to high grating lobes in range profile. In this paper, the Super-SVA technique is applied to solve the grating lobe problem arisen from band gaps in SFCS. Simulation and experiment results for moving train imaging are presented to show that the algorithm works very well. |
| 英文摘要 | It is well-known that the stepped-frequency chirp signal (SFCS) technique is one of the very effective approaches for achieving high range resolution in radar [1-5]. The SFCS is a train of subchirp pulses with up-stepped or down-stepped carrier frequencies. However, there exists a rang-Doppler coupling problem (RDCP) when applying this signal to practical radar system because longer time is needed for transmitting a complete burst compared with that needed for transmitting just a single chirp. In radar system design, if carrier frequency step (Δf) can be larger than the bandwidth of subchirp (Bm), it will be very helpful for using less number of subchirps to obtain high resolution and at the same time reduce the inouence of RDCP on imaging quality. However, the spectrum of transmitted signal will not be continuous but with band gaps existing when Δf > Bm, and it will lead to high grating lobes in range profile. In this paper, the Super-SVA technique is applied to solve the grating lobe problem arisen from band gaps in SFCS. Simulation and experiment results for moving train imaging are presented to show that the algorithm works very well. |
| 学科主题 | 微波遥感 |
| 收录类别 | EI |
| 语种 | 英语 |
| 公开日期 | 2014-12-15 |
| 源URL | [http://ir.nssc.ac.cn/handle/122/3435]  |
| 专题 | 国家空间科学中心_微波遥感部 |
| 推荐引用方式 GB/T 7714 | Zhai, W,Zhang, Y,. Application of super-sva to stepped-chirp radar imaging with frequency band gaps between subchirps[J]. Progress In Electromagnetics Research B,2011(30):71-82. |
| APA | Zhai, W,&Zhang, Y,.(2011).Application of super-sva to stepped-chirp radar imaging with frequency band gaps between subchirps.Progress In Electromagnetics Research B(30),71-82. |
| MLA | Zhai, W,et al."Application of super-sva to stepped-chirp radar imaging with frequency band gaps between subchirps".Progress In Electromagnetics Research B .30(2011):71-82. |
入库方式： OAI收割
来源：国家空间科学中心
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