QQ客服 官方微博 反馈留言

浏览/检索结果: 共5条，第1-5条 帮助 已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择发表日期升序发表日期降序作者升序作者降序提交时间升序提交时间降序题名升序题名降序 A Novel NMF Guided for Hyperspectral Unmixing From Incomplete and Noisy Data 期刊论文 IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, 2022, 卷号: 60 作者:  Dong, Le;  Lu, Xiaoqiang;  Liu, Ganchao;  Yuan, Yuan 收藏  |  浏览/下载：43/0  |  提交时间：2022/01/18 Image reconstruction  Hyperspectral imaging  Noise measurement  Gaussian noise  Interference  Stability analysis  Sensors  Hyperspectral unmixing (HU)  image reconstruction  nonnegative matrix factorization (NMF)  spatial-spectral information   Method of synchronization measurement via spatial-spectral interference in coherent combination of multi-channel ultra-short pulses 期刊论文 LASER PHYSICS, 2017, 卷号: 27 作者:  Li, Z. L.;  Zuo, Y. L.;  Wu, Z. H.;  Wang, X.;  Mu, J. 收藏  |  浏览/下载：7/0  |  提交时间：2019/11/26 coherent combination  spatial-spectral interference  synchronization measurement  femtosecond pulse   Analysis of wavelength dependence of mode in high power fiber laser 期刊论文 ACTA PHYSICA SINICA, 2017, 卷号: Vol.66 No.19 作者:  Liang, JC;  Feng, GY;  Zhang, SL;  Lan, B;  Zhou, SH 收藏  |  浏览/下载：3/0  |  提交时间：2019/02/25 fiber modes  F-2 method based on spatial and spectral Fourier transform  group delay difference  spectral interference   Advanced astigmatism-corrected tandem Wadsworth mounting for small-scale spectral broadband imaging spectrometer (EI CONFERENCE) 会议论文 Lei Y.; Lin G.-Y. 收藏  |  浏览/下载：30/0  |  提交时间：2013/03/25 Tandem gratings of double-dispersion mount make it possible to design an imaging spectrometer for the weak light observation with high spatial resolution  high spectral resolution  and high optical transmission efficiency. The traditional tandem Wadsworth mounting is originally designed to match the coaxial telescope and large-scale imaging spectrometer. When it is used to connect the off-axis telescope such as off-axis parabolic mirror  it presents lower imaging quality than to connect the coaxial telescope. It may also introduce interference among the detector and the optical elements as it is applied to the short focal length and small-scale spectrometer in a close volume by satellite. An advanced tandem Wadsworth mounting has been investigated to deal with the situation. The Wadsworth astigmatism-corrected mounting condition for which is expressed as the distance between the second concave grating and the imaging plane is calculated. Then the optimum arrangement for the first plane grating and the second concave grating  which make the anterior Wadsworth condition fulfilling each wavelength  is analyzed by the geometric and first order differential calculation. These two arrangements comprise the advanced Wadsworth mounting condition. The spectral resolution has also been calculated by these conditions. An example designed by the optimum theory proves that the advanced tandem Wadsworth mounting performs excellently in spectral broadband. 2012 Optical Society of America.   A study on the multiplication technique of nano-moire Fringe 期刊论文 2010, 2010 Liu Zhanwei; Xie Huimin; Fang Daining; Dai Fulong; Wang Weining; Fang Yan 收藏  |  浏览/下载：4/0