2010 Symposium on Photonics and Optoelectronics最新文献_第6页

Analysis of a 140GHz Two-Section Folded Waveguide Traveling-Wave Tube 140GHz两段折叠波导行波管分析

2010 Symposium on Photonics and Optoelectronics Pub Date : 2010-06-19 DOI: 10.1109/SOPO.2010.5504321

J. He, Y. Wei, Y. Gong, W. Wang, Guang-Can Guo, M. Liao, Gun-Sik Park

引用次数: 5

Application of Wavelet Digital Filter in the Radial Shearing Interferometry 小波数字滤波在径向剪切干涉测量中的应用

2010 Symposium on Photonics and Optoelectronics Pub Date : 2010-06-19 DOI: 10.1109/SOPO.2010.5504326

Yongzhao Du, Chun Tang, G. Feng, Hongru Li, G. Deng, Shouhuan Zhou

引用次数: 0

Q-Point Stabilization of Optical Fabry-Perot Interferometric Sensor 光学法布里-珀罗干涉传感器的q点稳定

2010 Symposium on Photonics and Optoelectronics Pub Date : 2010-06-19 DOI: 10.1109/SOPO.2010.5504379

Jianyong Chen, Zhi-zong Wu, Yixuan Wu

引用次数: 0

Study on Image Processing Technology in Imaging Laser Detection System 激光成像探测系统中图像处理技术的研究

2010 Symposium on Photonics and Optoelectronics Pub Date : 2010-06-19 DOI: 10.1109/SOPO.2010.5504233

Zhong-liang Zhou, Jiaju Ying

{"title":"Study on Image Processing Technology in Imaging Laser Detection System","authors":"Zhong-liang Zhou, Jiaju Ying","doi":"10.1109/SOPO.2010.5504233","DOIUrl":"https://doi.org/10.1109/SOPO.2010.5504233","url":null,"abstract":"With the extensive use of laser equipment and weapons systems, such as laser range finder and laser guided weapons, the energy of each laser source is greatly different. So the requirement of higher dynamic range is presented in the laser detection system. For the problem of insufficient dynamic range in Imaging Laser Detection System (ILDS), a method by image processing to extend the system dynamic range is discussed based on the existing hardware of wide-angle telecentric fish-eye lens and CMOS camera device Frame subtraction technique is commonly used in ILDS to recognize and locate the laser spot by filtering out background interference and noise. On this basis, it is proposed that in view of the receive laser energy's difference, uses the different method to expand the dynamic range. When the laser energy is low, the laser signal that may be submerged in noise can not be accurately interpreted and precisely localized. The technique of fuzzy weighted averaging filtering is used to get rid of noise and enhance detection sensitivity of the system, namely expansion detection lower limit. When the incident laser is strong, because the fish eye optical system would produce the reflection disturbance light, the imaging surface may be interfered by anomalous disturbance facula. Spot matching pattern recognition method is presented to remove the mixed light disturbance and enhance the recognition upper limit. The experimental results show that these methods can effectively improve the system's dynamic range and has a certain value of applied research","PeriodicalId":155352,"journal":{"name":"2010 Symposium on Photonics and Optoelectronics","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129940131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

On Signals Attenuation of QPS Based on Satellites in Atmosphere Channel 基于卫星的大气信道QPS信号衰减研究

2010 Symposium on Photonics and Optoelectronics Pub Date : 2010-06-19 DOI: 10.1109/SOPO.2010.5504385

Zheng-wen Cao, Zhao-yang Dai, Ping Xu, Rui Luo

引用次数: 0

Optimization for Photoelectric Joint Transform Correlator Recognition 光电联合变换相关器识别的优化

2010 Symposium on Photonics and Optoelectronics Pub Date : 2010-06-19 DOI: 10.1109/SOPO.2010.5504450

Liang Nie, Mengmeng Hu

引用次数: 0

Simultaneous Optimization of SG Smoothing Parameters and PLS Factor Was Applied to NIRS Analysis of Soil Organic Matter 将SG平滑参数和PLS因子同时优化应用于土壤有机质近红外光谱分析

2010 Symposium on Photonics and Optoelectronics Pub Date : 2010-06-19 DOI: 10.1109/SOPO.2010.5504415

Huazhou Chen, T. Pan, Jiemei Chen, Jun Xie, Shuyi Li, Fangbai Li

{"title":"Simultaneous Optimization of SG Smoothing Parameters and PLS Factor Was Applied to NIRS Analysis of Soil Organic Matter","authors":"Huazhou Chen, T. Pan, Jiemei Chen, Jun Xie, Shuyi Li, Fangbai Li","doi":"10.1109/SOPO.2010.5504415","DOIUrl":"https://doi.org/10.1109/SOPO.2010.5504415","url":null,"abstract":"The rapid and simple analytical method for soil organic matter by near infrared spectroscopy (NIRS) is very significant in precision agriculture. In this paper, the rapid determination method and the analysis model of soil organic matter were established by using the NIRS technology, partial least squares (PLS) regression and Savitzky-Golay (SG) smoothing method. Based on the prediction effect of the optimal single wavelength model, calibration set and prediction set were divided. By extending the number of smoothing points and the degree of polynomial, 483 smooth modes were calculated. The PLS models corresponding to all combinations of 483 SG smoothing modes and 1-30 PLS factor were established respectively. The optimal smoothing parameters were the second order derivative smoothing, 2 or 3 degree polynomial, 61 smoothing points, the optimal PLS factor, root mean squared error of predication (RMSEP) and correlation coefficient of predication (RP) were 19, 0.197 (%) and 0.925 respectively, which was obviously superior to the direct PLS model without SG smoothing and the optimal SG smoothing model within 25 smoothing points (the original smoothing method). This demonstrates that the extending of SG smoothing modes and large-scale simultaneous optimization selection of SG smoothing parameters and PLS factor was all very necessary, and can be effectively applied to the model optimization of NIRS analysis.","PeriodicalId":155352,"journal":{"name":"2010 Symposium on Photonics and Optoelectronics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129147906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design of Capacitance Sensor's Circuit 电容传感器电路的设计

2010 Symposium on Photonics and Optoelectronics Pub Date : 2010-06-19 DOI: 10.1109/SOPO.2010.5504236

Xiao-Na Bian, Wen He, Hui-yun Han

引用次数: 4

Scratch Types and Damage Thresholds of Fused Silica 熔融二氧化硅的划伤类型和损伤阈值

2010 Symposium on Photonics and Optoelectronics Pub Date : 2010-06-19 DOI: 10.1109/SOPO.2010.5504301

Yong Jiang, Xiaodong Yuan, X. Xiang, Haijun Wang, Shizhen Xu, Meng Chen, Xibin Li, Wanguo Zheng, X. Zu

{"title":"Scratch Types and Damage Thresholds of Fused Silica","authors":"Yong Jiang, Xiaodong Yuan, X. Xiang, Haijun Wang, Shizhen Xu, Meng Chen, Xibin Li, Wanguo Zheng, X. Zu","doi":"10.1109/SOPO.2010.5504301","DOIUrl":"https://doi.org/10.1109/SOPO.2010.5504301","url":null,"abstract":"Atom force microscopy (AFM) is used to investigate micro-morphology of various types of scratches in the fused silica surface and sub-surface. Based on the shape, scratches can be classified as lateral scratch, radial scratch, Hertizan cone scratch, and trailing indent scratch. From forming mechanism, scratches can be classified as plastic scratch, brittle scratch and mixed scratch. The statistical damage thresholds of three kinds of common scratches are obtained through raster scanning at different laser fluences. The results show that the damage threshold of radial scratches is the highest and that of the trailing indent scratches is the lowest. In addition, for the samples etched in different concentration buffered hydrofluoric acid solutions for different etching time, the damage thresholds are also obtained. The high concentration and long-time etching can effectively enhance the damage threshold of scratches. Brittle scratches are easier to damage than plastic scratches. Two kinds of mechanisms are responsible for the laser damage: local electrical intensification and mechanical weakness induced by scratches. This work is a reference for further investigation on damage threshold enhancement and damage mechanism of scratches in fused silica.","PeriodicalId":155352,"journal":{"name":"2010 Symposium on Photonics and Optoelectronics","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130817741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Photoacoustic Topography System Based on Ring-Shaped Array Transducer 基于环形阵列换能器的光声地形系统

2010 Symposium on Photonics and Optoelectronics Pub Date : 2010-06-19 DOI: 10.1109/SOPO.2010.5504095

Sihua Yang, D. Xing, Songbo Ma

引用次数: 0