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	Spectrum Sensing Method Based on Information Geometry and Deep Neural Network 期刊论文 OAI收割 ENTROPY, 2020, 卷号: 22, 期号: 1, 页码: 13 作者: Du, Kaixuan; Wan, Pin; Wang, Yonghua; Ai, Xiongzhi; Chen, Huang \| 收藏 \| 浏览/下载：23/0 \| 提交时间：2020/06/02 spectrum sensing information geometry statistical manifold geodesic distance deep neural network
	Study on the Classification of LAMOST Early Stellar Spectrum Template by Mahalanobis Distance 期刊论文 OAI收割 SPECTROSCOPY AND SPECTRAL ANALYSIS, 2019, 卷号: 39, 期号: 5, 页码: 1618-1622 作者: Chen Shu-xin; Sun Wei-min; Song Yi-han \| 收藏 \| 浏览/下载：56/0 \| 提交时间：2020/03/10 Mahalanobis distance Early-type stellar Spectrum template LAMOST (large sky area multi-object fiber spectroscopy telescope) ELODIE
	Similarity Measurement Among Classification Templates for LAMOST Stellar Spectra 期刊论文 OAI收割 SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 卷号: 38, 期号: 6, 页码: 1922-1925 作者: Chen Shu-xin; Sun Wei-min; Kong Xiao \| 收藏 \| 浏览/下载：9/0 \| 提交时间：2020/03/10 Similarity measurement Euclidean distance Mahalanobis distance Stellar spectrum template LAMOST (large sky area multi-object fiber spectroscopy telescope)
	Factors Influencing the Shear Modulus of Colloidal Crystals 期刊论文 OAI收割 CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE, 2015, 卷号: 36, 期号: 2, 页码: 310-315 作者: Qin YM(秦艳铭); Zhou HW(周宏伟); Xu SH(徐升华); Sun ZW(孙祉伟) 收藏 \| 浏览/下载：86/0 \| 提交时间：2015/04/28 Reflection spectrum Torsional resonance spectroscopy Shear modulus Nearest interparticle distance Void
	Optimization of irregular mapping for error floor removed bit-interleaved coded modulation with iterative decoding and 8psk 期刊论文 iSwitch采集 Eurasip journal on wireless communications and networking, 2014, 卷号: 2014, 期号: 1 作者: Cheng,Chen; Tu,Guofang; Zhang,Can; Dai,Jing 收藏 \| 浏览/下载：33/0 \| 提交时间：2019/05/09 Bit-interleaved coded modulation with iterative decoding (bicm-id) Irregular mapping Doping Distance spectrum Extrinsic information transfer (exit) chart
	A design of beam shaping unit for 193nm lithography illumination system using angular spectrum theory (EI CONFERENCE) 会议论文 OAI收割 6th International Symposium on Precision Engineering Measurements and Instrumentation, August 8, 2010 - August 11, 2010, Hangzhou, China 作者: Zhao Y.; Zhang W.; Zhang W.; Li S.; Gong Y. 收藏 \| 浏览/下载：17/0 \| 提交时间：2013/03/25 Off-axis illumination (OAI) technology is widely used to enhance resolution for deep ultraviolet lithography. The realizing methods of OAI include geometrical optics method and physical optics method. However the former has the disadvantage of weak intensity distribution controlling ability and the latter introduces simulation errors evidently when dealing with near field diffraction propagation. A diffractive optical element (DOE) designing method using plane wave angular spectrum theory is presented in this paper. Several kinds of OAI modes at near field away from DOE can be realized and simulation errors and the size of illuminator are also reduced. According to studying the relationships of the sampling point distance of DOE light beam propagation distance and the structure of the beam shaping unit a method of determining the designing parameters is discussed. Using this method several illumination modes are realized and simulation results show that all diffraction efficiencies reach up to 84%. The method of DOE manufacturing is analyzed at last and it is proven to be feasible. 2010 SPIE.
	Method for obtaining real temperature of space object by using the ratio of emissivity at different wavelengths (EI CONFERENCE) 会议论文 OAI收割 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, November 19, 2008 - November 21, 2008, Chengdu, China Guo-Qiang W.; Tao C.; Jian-Li W. 收藏 \| 浏览/下载：33/0 \| 提交时间：2013/03/25 The infrared radiation character (temperature and efficiency radiation area) of a space object is an important characteristic we can judge the state of the object working in orbit by measuring temperature and variety. Due to lower temperature of the object and far distance between the object and the earth the infrared radiation signal is faintness therefore temperature and the infrared radiation character is difficult to measure. There are several methods to measure the temperature of the object in theory and each one has its applicability respectively such as applying Wien Law to compute temperature based on Stefan-Bolzmann law to compute temperature and utilizing multi-spectrum detector to measure temperature As a whole these methods are based on the hypothesis that the object is a Black-body or the radiance emissivity is constant. In fact homochromatic radiance of object is not a constant but a function that changes with wavelength. Since the problem that an object whose homochromatic radiance s not a constant which results in temperature can not be computed accurately we bring forward a method to contrast the luminance of the object at different wavelengths and deduce the relationship among homochromatic radiance and wavelength and the temperature of Black-body from which we can compute real temperature of object. 2009 SPIE.
	A high-accuracy parameter estimation algorithm for jointless Frequency-shift track circuit (EI CONFERENCE) 会议论文 OAI收割 ISECS International Colloquium on Computing, Communication, Control, and Management, CCCM 2008, August 3, 2008 - August 4, 2008, Guangzhou, China 作者: Zheng X. 收藏 \| 浏览/下载：24/0 \| 提交时间：2013/03/25 FSK (Frequency Shift keying) signal which has advantages of narrow-bandwidth strong anti-interference ability long transmission distance and so on is used in jointless Frequency-shift track circuit to send different kinds of control signals. However as FSK is non-linearly modulated parameter estimation with high accuracy is hard to realize. Based on the spectrum analysis complement with time-frequency distribution a highaccuracy FSK signal parameter estimation algorithm is put forward in this paper. According to the signal characteristics under-sampling and ZFFT are used to improve the accuracy of spectrum analysis and the base frequency resolution meets system requirement of 0.02Hz. Wigner-Ville distribution has an excellent time-frequency concentration while serious cross-term interference at the same time. Through the design of kernel function the cross-terms are almost suppressed and the upper/down side frequency resolution meets the system requirement of 0.2Hz. The effectivities of all the methods mentioned above have been proved by MATLAB simulation which pave a solid way for the development of high-accuracy FSK signal parameter estimation devices. 2008 IEEE.
	A study on the outlier mining system for LAMOST spectra 期刊论文 OAI收割 SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 卷号: 27, 期号: 3, 页码: 606-609 作者: Zhang Ji-fu; Cai Jiang-hui 收藏 \| 浏览/下载：21/0 \| 提交时间：2015/11/08 celestial body spectrum data outliers clustering distance support