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：50/0 | 提交时间：2021/01/07

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

Steady states of quantum Brownian motion and decomposition of quantum states into ensembles of Gaussian packets having a uniform position variance 期刊论文 OAI收割
PHYSICA SCRIPTA, 2019, 卷号: 94, 期号: 11, 页码: 7
作者: Gu, Yan

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收藏 | 浏览/下载：61/0 | 提交时间：2019/11/10

quantum Brownian motion quantum characteristic function decomposition of quantum state into ensemble of Gaussian packets quantum-to-classical transition

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：99/0 | 提交时间：2019/12/25

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

Determination of Hydraulic Properties of Unsaturated Soils Based on Nonequilibrium Multistep Outflow Experiments 期刊论文 OAI收割
JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING, 2017, 卷号: 143, 期号: 1, 页码: -
作者: Chen, Pan; Wei, Changfu; Yi, Panpan; Ma, Tiantian

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收藏 | 浏览/下载：24/0 | 提交时间：2018/06/05

Soil-water characteristic curve Hydraulic conductivity function Unsaturated soil Multistep outflow test Nonequilibrium flow Capillary relaxation

Temperature control characteristics analysis of lead-cooled fast reactor with natural circulation 期刊论文 OAI收割
ANNALS OF NUCLEAR ENERGY, 2016, 卷号: 90, 期号: 无, 页码: 54-61
作者: Yang, Minghan; Song, Yong; Wang, Jianye; Xu, Peng; Zhang, Guangyu

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收藏 | 浏览/下载：17/0 | 提交时间：2018/01/25

Lfr Natural Circulation Temperature Control Characteristic Transfer Function Matrix Frequency Domain Analysis Method

Resource allocation based on dea and modified shapley value 期刊论文 iSwitch采集
Applied mathematics and computation, 2015, 卷号: 263, 页码: 280-286
作者: Yang, Zhihua; Zhang, Qianwei

收藏 | 浏览/下载：30/0 | 提交时间：2019/05/10

Resource allocation Dea (data envelopment analysis) Modified shapley value Characteristic function

Comparison of radiation temperature measurement precision between middlewave and longwave thermal-imaging systems (EI CONFERENCE) 会议论文 OAI收割
2012 International Conference on Optoelectronics and Microelectronics, ICOM 2012, August 23, 2012 - August 25, 2012, Changchun, China
作者: Sun Z.

收藏 | 浏览/下载：28/0 | 提交时间：2013/03/25

A comparison study on temperature measurement precision between middlewave 3-5m and longwave 8-12m measuring thermal imaging systems has been conducted. The study was limited to systems working in indoor conditions and the target's temperature is in the range of 270K900K. First the Disturb Resisting Function (DRF) of infrared systems is deduced. On the base of DRF curve we find that the middlewave infrared system get the smaller influences under the same size disturb compared with the longwave system. A theory of the influence of target's physical characteristic and measurement conditions on the accuracy of temperature measurements has been developed. On the basis of the developed formulas an analysis of the influence of signal disturbances (because of incorrectly assumed emissivity limited transmittance of the atmosphere radiation reflected by the object and shift of optics radiation) on the accuracy of temperature measurement has been made. It has been found that the middlewave systems in typical temperature range offer generally better accuracy in temperature measurement than the longwave ones do. 2012 IEEE.

An energy-based position control and asymptotic stability analysis for manipulator handling a flexible payload (EI CONFERENCE) 会议论文 OAI收割
10th World Congress on Intelligent Control and Automation, WCICA 2012, July 6, 2012 - July 8, 2012, Beijing, China
作者: Wang Z.; Li Y.; Li Y.; Li Y.; Li Y.

收藏 | 浏览/下载：44/0 | 提交时间：2013/03/25

In this paper an exact dynamic model of manipulator handling a flexible payload is derived by Hamiton's principle. On the basis of the distributed parameter model a position controller is designed by using Lyapunov function related to the total energy of the system. The controller can achieve the given desired link angles and suppress the vibrations of flexible payload. Using the LaSalle's invariance principle and the characteristic of the differential operator the asymptotic stability in the neighbor-hood of the desired states of the closed-loop system is proved. The effectiveness of the control strategy proposed is supported by some simulations. 2012 IEEE.

Adaptive Wiener filtering with Gaussian fitted point spread function in image restoration (EI CONFERENCE) 会议论文 OAI收割
2011 IEEE 2nd International Conference on Software Engineering and Service Science, ICSESS 2011, July 15, 2011 - July 17, 2011, Beijing, China
作者: Yang L.; Zhang X.; Zhang X.; Zhang X.; Yang L.

收藏 | 浏览/下载：41/0 | 提交时间：2013/03/25

In the imaging process of the space remote sensing camera there was degradation phenomenon in the acquired images. In order to reduce the image blur caused by the degradation the remote sensing images were restored to give prominence to the characteristic objects in the images. First the frequency-domain notch filter was adopted to remove strip noises in the images. Then using the ground characters with the knife-edge shape in the images the point spread function of the imaging system was estimated. In order to improve the accuracy the estimated point spread function was corrected with Gaussian fitting method. Finally the images were restored using the adaptive Wiener filtering with the fitted point spread function. Experimental results of the real remote sensing images showed that almost all strip noises in the images were eliminated. After the denoised images were restored its variance and its gray mean gradient increased also its laplacian gradient increased. Restoration with Gaussian fitted point spread function is beneficial to interpreting and analyzing the remote sensing images. After restoration the blur phenomenon of the images is reduced. The characters are highlighted and the visual effect of the images is clearer. 2011 IEEE.

Research on the identification for a nonlinear system (EI CONFERENCE) 会议论文 OAI收割
International Conference on Optical, Electronic Materials and Applications 2011, OEMA 2011, March 4, 2011 - March 6, 2011, Chongqing, China
作者: Liu J.; Jia P.; Liu J.; Liu J.

收藏 | 浏览/下载：31/0 | 提交时间：2013/03/25

The characteristic of the drift error of inertial platform is a high-order nonlinear dynamic system using the neural networks' abilities of universal approximation of differentiable trajectory and capturing system dynamic information this paper presents the drift error identifying project of inertial platform based on Elman networks structure. First the drift error model of inertial platform is established after selecting the input and output for network momentum and alterable speed algorithm is used to speed up the network convergence. On the basis of the algorithm the extended nonlinear node function in the hidden network does not only improve the learning speed of network but also satisfies the need of accuracy on system identification. Through the drift error data measured on inertial platform the training result shows that the scheme achieves satisfied identification results. (2011) Trans Tech Publications.