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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 非稳态地震记录时变子波估计 期刊论文 地球物理学报, 2017 冯玮; 胡天跃; 姚逢昌; 张研; 崔永福; 彭更新 收藏  |  浏览/下载：5/0  |  提交时间：2017/12/03 子波估计  非稳态  谱分析  偏度  井震匹配  Wavelet estimation  Nonstationary  Spectral coherence  Skewness  Match of seismic-log data  PRIMARY REFLECTION COEFFICIENTS  MINIMUM ENTROPY DECONVOLUTION  PHASE ESTIMATION  KURTOSIS MAXIMIZATION  INVERSION  TRACES  CRITERION   Feature-enhanced spectral similarity measure for the analysis of hyperspectral imagery 期刊论文 JOURNAL OF APPLIED REMOTE SENSING, 2015, 卷号: 9 作者:  Li, Qingbo;  Niu, Chunyang 收藏  |  浏览/下载：9/0  |  提交时间：2020/01/06 spectra similarity measure  spectral feature-enhanced space  hyperspectral image  spectra match   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.   Research on Spectral Classification Algorithm Based on Spatial Feature 期刊论文 spectroscopy and spectral analysis, 2010, 卷号: 30, 期号: 10, 页码: 2772-2775 作者:  Gao Xiao-hui;  Xiangli Bin;  Wei Jun-xia;  Wei Ru-yi;  Yu Tao 收藏  |  浏览/下载：202/56  |  提交时间：2011/07/12 Object identification  Spectral detection  Spectral match  Spectral classification   In-flight method for CBERS-02 IRMSS thermal channel absolute radiometric calibration at Lake Qinghai (China) 会议论文 IGARSS 2005: IEEE International Geoscience and Remote Sensing Symposium, Vols 1-8, Proceedings, New York Zhang, Y; Gu, X; Yu, T; Li, XY; Li, XW 收藏  |  浏览/下载：18/0  |  提交时间：2014/12/07 in-flight calibration  spectral response match  radiative transfer  calculation  CBERS-02 IRMSS  thermal channel  SENSORS  SITES