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| Modified scaling angular spectrum method for numerical simulation in long-distance propagation* | |
Chen, Xiao-Yi1,2; Duan, Ya-Xuan1; Xiang, Bin-Bin3 ; Li, Ming1; Da, Zheng-Shang1
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| 2021-03-01 | |
| Source Publication | CHINESE PHYSICS B
 |
| ISSN | 1674-1056 |
| Volume | 30Issue:3Pages:034203 |
| Contribution Rank | 3 |
| Abstract | The angular method (AS) cannot be used in long-distance propagation because it produces severe numerical errors due to the sampling problem in the transfer function. Two ways can solve this problem in AS for long-distance propagation. One is zero-padding to make sure that the calculation window is wide enough, but it leads to a huge calculation burden. The other is a method called band-limited angular spectrum (BLAS), in which the transfer function is truncated and results in that the calculation accuracy decreases as the propagation distance increases. In this paper, a new method called modified scaling angular spectrum (MSAS) to solve the problem for long-distance propagation is proposed. A scaling factor is introduced in MSAS so that the sampling interval of the input plane can be adjusted arbitrarily unlike AS whose sampling interval is restricted by the detector's pixel size. The sampling interval of the input plane is larger than the detector's pixel size so the size of calculation window suitable for long-distance field propagation in the input plane is smaller than the size of the calculation window required by the zero-padding. Therefore, the method reduces the calculation redundancy and improves the calculation speed. The results from simulations and experiments show that MSAS has a good signal-to-noise ratio (SNR), and the calculation accuracy of MSAS is better than BLAS. |
| Keyword | angular spectrum diffraction Fourier optics and signal process |
| DOI | 10.1088/1674-1056/abd38d |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[61705254] ; Key Research and Development Program of Shaanxi Province of China[2020GY-114] |
| WOS Research Area | Physics |
| WOS Subject | Physics, Multidisciplinary |
| WOS ID | WOS:000631808900001 |
| Publisher | IOP PUBLISHING LTD |
| Funding Organization | National Natural Science Foundation of China ; Key Research and Development Program of Shaanxi Province of China |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/3956 |
| Collection | 射电天文研究室_天线技术实验室 |
| Corresponding Author | Duan, Ya-Xuan |
| Affiliation | 1.Chinese Acad Sci, Xian Inst Opt & Precis Mech, Adv Opt Instrument Res Dept, Xian 710119, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China |
| Recommended Citation GB/T 7714 | Chen, Xiao-Yi,Duan, Ya-Xuan,Xiang, Bin-Bin,et al. Modified scaling angular spectrum method for numerical simulation in long-distance propagation*[J]. CHINESE PHYSICS B,2021,30(3):034203. |
| APA | Chen, Xiao-Yi,Duan, Ya-Xuan,Xiang, Bin-Bin,Li, Ming,&Da, Zheng-Shang.(2021).Modified scaling angular spectrum method for numerical simulation in long-distance propagation*.CHINESE PHYSICS B,30(3),034203. |
| MLA | Chen, Xiao-Yi,et al."Modified scaling angular spectrum method for numerical simulation in long-distance propagation*".CHINESE PHYSICS B 30.3(2021):034203. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Chen-2021-Modified s（1691KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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