中国科学院机构知识库网格系统: 检索

Ion Mobility Spectrometry Spectrum Reconstruction and Characteristic Peaks Extraction Algorithm Research 期刊论文 OAI收割
SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 卷号: 40, 期号: 9, 页码: 2681-2685
作者: Zhang Gen-wei; Peng Si-long; Guo Teng-xiao; Yang Jie; Yang Jun-chao

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收藏 | 浏览/下载：40/0 | 提交时间：2021/01/07

Ion mobility spectrometry Spectrum reconstruction Characteristic peaks extraction Sparse representation Surrogate function algorithm

Performance Evaluation of Spaceborne Atomic Clock for BDS-3 Basic System 会议论文 OAI收割
Chengdu, China, 2020-11-22
作者: Sun, Guang; Shen, Lirong; Zou, Tongyuan; Jia, Xiaolin; Liu, Xiaogang

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收藏 | 浏览/下载：34/0 | 提交时间：2020/06/28

BDS spaceborne atomic clock Clock model Spectrum analysis Periodic characteristic

Compressed sensing method for measuring absorption spectrum of liquid samples 期刊论文 OAI收割
Optik, 2019, 卷号: 189, 页码: 60-65
作者: Lan, Ruo-Ming; Liu, Xue-Feng; Zhao, Li-Na; Zhao, Yue-Feng; Bai, Cheng-Jie

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收藏 | 浏览/下载：215/0 | 提交时间：2019/07/10

Absorption Spectrum Compressed Sensing Wave-length Calibration Characteristic Spectrum

Research on the method of updating instrument line shape function of on-orbit fourier ultrahigh resolution spectrometer 期刊论文 OAI收割
JOURNAL OF INFRARED AND MILLIMETER WAVES, 2018, 卷号: 37, 期号: 5, 页码: 613-620
作者: Wang Jun-Feng; Ye Han-Han; Yi Wei-Ning; Chen Zhen-Ting; Fang Xue-Jing

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收藏 | 浏览/下载：93/0 | 提交时间：2019/12/25

instrument line shape function calibration spectrum fourier spectrometer solar spectrum model characteristic peak on-orbit

Looseness Detection of Rail Fasteners Using MEMS Sensor and Power Spectrum Entropy 会议论文 OAI收割
Shenzhen, China, December 5-7, 2018
作者: Liu LQ(刘连庆); Sha, Xiaopeng; Yu, Xiaodong; Yu, Jianing; Zhao YL(赵玉良)

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收藏 | 浏览/下载：31/0 | 提交时间：2019/06/29

fastening system: dynamic model vibration characteristic power spectrum entropy

Equivalent characteristic spectrum analysis in TG-MS system 期刊论文 OAI收割
THERMOCHIMICA ACTA, 2015, 卷号: 602, 页码: 15-21
作者: Xia, Hongde; Wei, Kai

收藏 | 浏览/下载：26/0 | 提交时间：2015/10/27

Equivalent characteristic spectrum analysis Quantitative analysis Calibration Relative sensitivity Evolve gas analysis

adaptive scale smoothing for road redundancy region elimination 期刊论文 OAI收割
OPTICAL ENGINEERING, 2012, 卷号: 51, 期号: 6, 页码: -
Huang Zhijian; Zhang Jinfang; Wu Jiaze; Xu Fanjiang

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收藏 | 浏览/下载：14/0 | 提交时间：2013/09/17

road extraction skeleton analysis shape characteristic spectrum characteristic adaptive scale smoothing remote sensing image

Effect of Process Parameter on Properties of (Y,Gd)(2)O-3:Eu3+ Nanopowders Prepared by Co-Precipitation Method 期刊论文 OAI收割
CHINESE JOURNAL OF INORGANIC CHEMISTRY, 2009, 卷号: 25, 期号: 5, 页码: 880-885
作者: Guo Yi-Fen; Ma Wei-Min; Wen Lei; Shen Shi-Fei; Wang Hua-Dong

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收藏 | 浏览/下载：5/0 | 提交时间：2021/02/02

co-precipitation method process parameter synthesis and characterzation optical spectrum characteristic

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：20/0 | 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.

The calibration of faint simulation star magnitude based on single photon count technique (EI CONFERENCE) 会议论文 OAI收割
International Symposium on Photoelectronic Detection and Imaging 2009: Advances in Imaging Detectors and Applications, June 17, 2009 - June 19, 2009, Beijing, China
作者: Xu S.-Y.; Guo J.; Guo J.

收藏 | 浏览/下载：20/0 | 提交时间：2013/03/25

A calibration method of faint star magnitude of the star scene simulation device is proposed in this paper. In the research of simulation star magnitude luminometers and CCD devices are the general calibration devices which are used to measure the illumination intensity and calibrate its magnitude. But if the simulation magnitude is only sixth magnitude its illumination intensity is only 1.010-8 Lux. This illumination intensity level is the lowest illumination intensity that the commercial luminometer can detect. Hence the simulation star magnitude lower than six magnitude cannot be calibrated by luminoters. Likewise CCD devices also need an additive cooler in this case. When the single photon characteristic is presented due to the low luminosity of simulating light sources the simulation star magnitude can be calibrated by detecting its photon flux of radiation with the method of single photon count. In this paper the detection principle of single photon based on a compact designed PMT detecting of the radiation level of simulation star magnitude is advanced. Especially a spectrum match method is proved theoretically to be an effective means for selecting PMT photosensitive type. In the case of the detection object of the simulation star in visible wavelength a analysis indicates that the material of tri-alkali cathode materials its best choice after being compared the Signal-to-Noise of photon detector of several PMT photosensitive materials based on the different spectrum match ratio of different object light sources and different cathode materials. An experiment is employed to show the relationship of control voltage of PMT and its dark counter the relationship of the environment temperature of PMT and its dark counter which proves its only decades of CPS at room temperature. The so low dark counter avoids a bulky cooler and is convenient for installing it on the star scene simulation equipment. Finally in the experiment of calibrating the simulation star magnitudes the ability of its calibration is confirmed to reaches up to 12m meanwhile its calibration error is within 0.2m. 2009 SPIE.