Optical sparse aperture imaging with faint objects using improved spatial modulation diversity
文献类型：期刊论文
| 作者 | Xie, Zongliang1,2; Ma, Haotong1,3; Qi, Bo1; Ren, Ge1,2; He, Xiaojun1,2; Dong, Li1,2; Tan, Yufeng1,2; Qiao, Shan1,2 |
| 刊名 | Scientific Reports
 |
| 出版日期 | 2017 |
| 卷号 | 7 |
| 关键词 | PHASE-DIVERSITY TELESCOPE RETRIEVAL |
| ISSN号 | 2045-2322 |
| 英文摘要 | The next generation of optical sparse aperture systems will provide high angular resolution for astronomical observations. Spatial modulation diversity (SMD) is a newly developed post-processing technique for such telescopes, faced with challenges of imaging faint objects, which are very attractive for astronomers but always make raw diversity images suffer serious photon noise. In this paper, we propose an improved SMD with denoising reprocessing embedded to address the problem. The blocking-matching and 3D filtering algorithm, a state-of-the-art denoising technique, is first employed to process the diversity images with low photon intensities generated by spatial modulation, specifically switching off each sub-aperture sequentially. SMD algorithm then can be applied to estimate wavefront and digitally restore images. It is demonstrated by both simulations and experiments that the proposed method outperforms the previous SMD in terms of reconstructions of wavefront and imagery from the raw images of faint objects corrupted seriously by photon noise. The reported method may provide an alternative approach to acquire high-quality images of faint objects for astronomical observations of the future segmented mirrors or telescope arrays. |
| 语种 | 英语 |
| 源URL | [http://ir.ioe.ac.cn/handle/181551/8891]  |
| 专题 | 光电技术研究所_光电工程总体研究室（一室） |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Opt Engn, Chengdu 610209, Sichuan, Peoples R China 2.Chinese Acad Sci, Inst Opt & Elect, Chengdu 610209, Sichuan, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100039, Peoples R China 4.Natl Univ Def Technol, Coll Optoelect Sci & Engn, Changsha 410073, Hunan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xie, Zongliang,Ma, Haotong,Qi, Bo,et al. Optical sparse aperture imaging with faint objects using improved spatial modulation diversity[J]. Scientific Reports,2017,7. |
| APA | Xie, Zongliang.,Ma, Haotong.,Qi, Bo.,Ren, Ge.,He, Xiaojun.,...&Qiao, Shan.(2017).Optical sparse aperture imaging with faint objects using improved spatial modulation diversity.Scientific Reports,7. |
| MLA | Xie, Zongliang,et al."Optical sparse aperture imaging with faint objects using improved spatial modulation diversity".Scientific Reports 7(2017). |
入库方式： OAI收割
来源：光电技术研究所
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