中国科学院机构知识库网格系统: 检索

The linear analysis of thin shell problems using the numerical manifold method 期刊论文 OAI收割
THIN-WALLED STRUCTURES, 2018, 卷号: 124, 页码: 366-383
作者: Guo, Hongwei; Zheng, Hong

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收藏 | 浏览/下载：38/0 | 提交时间：2018/06/05

Numerical manifold method Mathematical cover Physical cover Naghdi shell model Lines of curvature

Rotation and scaling invariant feature lines for image matching (EI CONFERENCE) 会议论文 OAI收割
2011 International Conference on Mechatronic Science, Electric Engineering and Computer, MEC 2011, August 19, 2011 - August 22, 2011, Jilin, China
作者: Wang Y.; Wang Y.; Wang Y.; Wang Y.; Wang Y.

收藏 | 浏览/下载：33/0 | 提交时间：2013/03/25

Image matching has been one of the most fundamental issues computer vision over the decades. In this paper we propose a novel method based on making use of feature lines in order to achieve more robust image matching. The feature lines have the properties of rotation and scaling invariance coined RIFLT(Rotation invariant feature line transform). Experimental results demonstrate the effectiveness and efficiency of the proposed method. Compare with the famous powerful algorithm Scale Invariant Feature Transform(SIFT) the proposed method is more insensitive to noise. And for certain sequence of images which contain clear lines the proposed method is more efficiency. Using the feature lines obtained by our method it is possible to matching two scene images with different rotation angles scale and light distort. 2011 IEEE.

The research of the accurate measure of static transfer function for the TDI CCD camera (EI CONFERENCE) 会议论文 OAI收割
3rd International Photonics and OptoElectronics Meetings, POEM 2010, November 2, 2010 - November 5, 2010, Wuhan, China
Guo-Ning L.; Long-Xu J.; Jian-Yue R.; Wen-Hua W.; Shuang-Li H.

收藏 | 浏览/下载：28/0 | 提交时间：2013/03/25

In the test course of static transfer function of TDI CCD camera because of the influence that gets environmental and artificial etc. factor the value of static transfer function measured at any time is between unceasing fluctuation so make accuracy reduce. To solve this problem a kind of accurate measurement technique of static transfer function is put forward. First before carrying out the measure of static quiet of transfer function the best test point of transfer function of the TDI CCD camera must be determined it is parallel to guarantee the rectangle target surface of parallel optical pipe and camera focal plane maintenance parallel and again guarantee target strip in rectangle target and TDI CCD in camera focal plane maintenance vertical. TDI CCD catches rectangle target image per 1000 lines of target mark image as a measures sample of static transfer function exclude because of atmosphere tremble twisted vague rectangle target mark image retain 500 distinct and steady target mark image as measure sample set. Then calculate the static transfer function of each measure sample respectively take the average of all static quiet transfer function in measure sample set as the static transfer function of camera. Finally the measure of the static transfer function for TDI CCD camera makes error analysis. Experimental results indicate that the value of the static transfer function of TDI CCD camera measured with this kind of method is 0.2923 with before measurement technique comparison the value of static transfer function has raised 0.02 makes the accuracy of the measure of static transfer function have gotten raising.

Design and analysis of Roll-Swing imaging seeker scan scheme (EI CONFERENCE) 会议论文 OAI收割
2010 2nd International Conference on Industrial Mechatronics and Automation, ICIMA 2010, May 30, 2010 - May 31, 2010, Wuhan, China
Bai Y.; Liu B.; Jia H.; Guo L.

收藏 | 浏览/下载：28/0 | 提交时间：2013/03/25

To achieve an optimum scan area and target stay time for Roll-Swing imaging seeker the scanning process is analyzed. The method of ground imaging area calculation is proposed in this paper. A kind of Roll-Swing imaging frame mechanism is introduced. The flight process simulation base on real flight data is realized. According to imaging sensor parameters and flight data a new scan scheme method is proposed and a new scan scheme is designed. The new scan scheme is compared to traditional scan scheme from different guide lines. The test results indicate that the new scan scheme satisfy requirement of the real flight experiment. 2010 IEEE.

Inhibition of electromagnetic interference in control system based on DSP of high-power TEA CO2 laser (EI CONFERENCE) 会议论文 OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
作者: Meng F.-J.; Guo L.-H.; Wang H.-Q.

收藏 | 浏览/下载：44/0 | 提交时间：2013/03/25

The strong electromagnetic interference (EMI) generated in high-power TEA C02 laser system mainly comes from main discharge circuit pulse spark switch and power supply. Such strong EMI causes great damage and interference to the control system based on DSP. In this paper we present the interference sources and their distribution and propose the methods of anti-interference. Measures for hardware design include weakening transient ground potential difference by using equipotential lines between devices using signal isolation interface to inhibit the transient ground potential interference and rational layout shielding and filtering to the control system. And methods for software design include range-limited filter self-diagnosis and self-repair for the critical data and anti-interference during abnormal reset. The EMI has been inhibited effectively by the anti-interference method proposed above. The result shows that: the software anti-interference method is as important as the hardware anti-interference method for the control system in a complex environment of strong EMI. 2010 IEEE.

Non-uniformity correction in multi-CCD imaging system (EI CONFERENCE) 会议论文 OAI收割
2010 2nd International Conference on Mechanical and Electronics Engineering, ICMEE 2010, August 1, 2010 - August 3, 2010, Kyoto, Japan
Tao M.; Ren J.

收藏 | 浏览/下载：33/0 | 提交时间：2013/03/25

The non-uniformity phenomenon exists in each channel of multi-CCD imaging systems. The factors which lead to the problem are complex. The conventional calibrating algorithms can not consider all of these factors and have poor effects. According to the characters of multi-CCD imaging systems a non-uniformity correction method based on the scene was proposed by adopting the traditional two-point correction theories. The correction coefficient of each channel image can be calculated via the linear relation between the two neighboring pixel lines in the two-channel images. Compared with the conventional two-point calibration and multi-point calibration methods contrastive calibrating results were obtained. This method does not need any standard lighted image as reference source which provides a real time way for calibrating the multi-CCD imaging systems in practical applications. 2010 IEEE.

Multi straight line analytical method for estimating aquifer parameters from recovery test data 期刊论文 OAI收割
Yantu Lixue/Rock and Soil Mechanics, 2008, 卷号: 29, 期号: 12, 页码: 3246-3250
Guo; Zhou; Li; Jian-Qing1; Hong-Fei1; Yan1; 2

收藏 | 浏览/下载：18/0 | 提交时间：2011/08/19

Water analysis - Aquifers - Functions - Parameter estimation - Probability density function - Test facilities - Water levels - Water wells - Wells - Analytical methods - Aquifer parameters - Data analysis method - Hydrogeological parameters - Multi straight line analysis - Parameters of aquifer - Pumping rates - Series expressions - Simplification of well function - Storability - Straight lines - Transmissivity - Water level risings - Water storages

Computation of stress intensity factors by the sub-region mixed finite element method of lines 期刊论文 OAI收割
Acta Mechanica Solida Sinica, 2007, 卷号: 20, 期号: 2, 页码: 149-162
作者: Yuan S(袁驷); Xu YJ(徐永君); Williams FW

收藏 | 浏览/下载：1027/76 | 提交时间：2009/08/03

Stress Intensity Factors Finite Element Method Of Lines Sub-Region Generalized Variational Principle Ordinary Differential Equation Solver Complete Eigen-Solutions Boundary-Value Odes V-Notched Plates Collocation Software Multi-Materials

Stress intensity factors calculation in anti-plane fracture problem by orthogonal integral extraction method based on femol 期刊论文 OAI收割
Acta Mechanica Solida Sinica, 2007, 卷号: 20, 期号: 1, 页码: 87-94
作者: Xu YJ(徐永君); Yuan S(袁驷)

收藏 | 浏览/下载：863/65 | 提交时间：2009/08/03

Anti-Plane Problem Hilbert Space Eigenvalue Eigenfunction Orthogonal Relationship Stress Intensity Factor Finite Element Method Of Lines Complete Eigen-Solutions Boundary-Value Odes Collocation Software Multi-Materials Computation Notches

强外加电场与大调制度下光折变动力学光栅形成研究 期刊论文 OAI收割
光学学报, 2007, 卷号: 27, 期号: 1, 页码: 148, 154
李大汕; 刘立人; 刘德安; 闫爱民; 栾竹

收藏 | 浏览/下载：1260/223 | 提交时间：2009/09/18

非线性光学体光栅直线法大调制度强外加电场 nonlinear optics volume grating method of lines large modulation strong applied electric field