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A model-averaging treatment of multiple instruments in Poisson models with errors 期刊论文
CANADIAN JOURNAL OF STATISTICS-REVUE CANADIENNE DE STATISTIQUE, 2021, 页码: 26
作者:  Zhang, Xiaomeng;  Zhang, Xinyu;  Ma, Yanyuan
收藏  |  浏览/下载：7/0  |  提交时间：2022/04/02
Development of a system of compatible individual tree diameter and aboveground biomass prediction models using error-in-variable regression and airborne LiDAR data 期刊论文
Remote Sensing, 2018, 卷号: 10, 期号: 2
作者:  Fu, Liyong;  Liu, Qingwang;  Sun, Hua;  Wang, Qiuyan;  Li, Zengyuan
收藏  |  浏览/下载：4/0  |  提交时间：2019/12/28
Comparison of seemingly unrelated regressions with error-in-variable models for developing a system of nonlinear additive biomass equations 期刊论文
Trees - Structure and Function, 2016, 卷号: 30, 期号: 3, 页码: 839-857
作者:  Fu, Liyong;  Lei, Yuancai*;  Wang, Guangxing;  Bi, Huiquan;  Tang, Shouzheng
收藏  |  浏览/下载：2/0  |  提交时间：2019/12/28
Closed-Loop Subspace Identification Algorithm of EIV Model Based on Orthogonal Decomposition and PCA 会议论文
ASIASIM 2012, PT I, 2012-10-27
作者:  Wang, Jianguo[1];  Guo, Yong[2];  Wang, Juanjuan[3]
收藏  |  浏览/下载：3/0  |  提交时间：2019/04/30
Design and optimization of supporting structure for scanning mirror in aviation remote sensor (EI CONFERENCE) 会议论文
2011 International Conference on Electric Information and Control Engineering, ICEICE 2011, April 15, 2011 - April 17, 2011, Wuhan, China
Li Y.-W.; Yang H.; Yuan G.-Q.; Ding Y.-L.; Zhang J.-C.; Cheng Z.-F.
收藏  |  浏览/下载：15/0  |  提交时间：2013/03/25
An optical supporting structure is studied to improve its structure stiffness and reduce the rotate error to meet the requirement of aviation remote sensor. A formula to calculate fundamental frequency is proposed using Rayleigh-Ritz method  and a method of is analyzed. By means of OPTISTRUCT software  the maximum fundamental frequency is converted to object function  the deformation under the gravity and the mass are assigned to state variable  wall thicknesses of the structure are converted to design variables. The analysis and test results indicate that the fundamental frequency of designed optical supporting structure has been improved 37.2 Hz from 96.9 Hz  which guarantee the reliability of the sweep mechanism  and the rotate error is 4.89  which is satisfied for the rotate accuracy in plunge angle. The method of optimization has a certain instructional significance for the design of supporting structures in aviation remote sensor. 2011 IEEE.  
Surface shape optimization for the space membrane reflector (EI CONFERENCE) 会议论文
2011 International Conference on Electronic and Mechanical Engineering and Information Technology, EMEIT 2011, August 12, 2011 - August 14, 2011, Harbin, China
Zhang P.; Jin G.; Zhong X.; Zhang Y.; Qi Y.-C.; Jie P.
收藏  |  浏览/下载：16/0  |  提交时间：2013/03/25
Space membrane reflector is very promised for optical quality application with the merits of ultra-lightweight and flexible. In order to improve the surface precision of membrane reflectors  the formation and surface shape error of a membrane at uniform load are studied based on the henky-cambell equations of circular membrane. The ANSYS software is used to build an optimization model of membrane reflector surface shape  in which the yield strength is the state variable  the surface load on ten concentric annular regions of the mirror is the design variable  and the minimum RMS between ideal surface and mirror surface is the target function. and the theoretical and experimental result show that RMS and PV of the optimized surfaces are reduced respectively than those before optimization. In a word  this paper offers the theoretical and experimental basis of the polyimide membrane reflector. 2011 IEEE.  
Improved filtering method for steady state tests with measurements containing gross errors 期刊论文
2010, 2010
Li Chulu; Chen Bingzhen; He Xiaorong; QiuTong; Hu Shanying
收藏  |  浏览/下载：2/0
Induction motor energy optimization control strategy based on variable-structure control 期刊论文
2010, 2010
Chang Jin; Zhang Zengke
收藏  |  浏览/下载：3/0
Research on automatic Hartmann test of membrane mirror (EI CONFERENCE) 会议论文
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, April 26, 2010 - April 29, 2010, Dalian, China
Zhong X.; Jin G.; Liu C.; Zhang P.
收藏  |  浏览/下载：20/0  |  提交时间：2013/03/25
Electrostatic membrane mirror is ultra-lightweight and easy to acquire a large diameter comparing with traditional optical elements  so its development and usage is the trend of future large mirrors. In order to research the control method of the static stretching membrane mirror  the surface configuration must be tested. However  membrane mirror's shape is always changed by variable voltages on the electrodes  and the optical properties of membrane materials using in our experiment are poor  so it is difficult to test membrane mirror by interferometer and null compensator method. To solve this problem  an automatic optical test procedure for membrane mirror is designed based on Hartmann screen method. The optical path includes point light source  CCD camera  splitter and diffuse transmittance screen. The spots' positions on the diffuse transmittance screen are pictured by CCD camera connected with computer  and image segmentation and centroid solving is auto processed. The CCD camera's lens distortion is measured  and fixing coefficients are given to eliminate the spots' positions recording error caused by lens distortion. To process the low sampling Hartmann test results  Zernike polynomial fitting method is applied to smooth the wave front. So low frequency error of the membrane mirror can be measured then. Errors affecting the test accuracy are also analyzed in this paper. The method proposed in this paper provides a reference for surface shape detection in membrane mirror research. 2010 Copyright SPIE - The International Society for Optical Engineering.  
Phase-laser ranging system based on digital signal processing for optoelectronics theodolite application (EI CONFERENCE) 会议论文
2010 3rd International Conference on Advanced Computer Theory and Engineering, ICACTE 2010, August 20, 2010 - August 22, 2010, Chengdu, China
Liu Y.-S.; Wang L.-Q.; Su W.-X.; Wang M.
收藏  |  浏览/下载：34/0  |  提交时间：2013/03/25

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