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Low transverse momentum track reconstruction based on the Hough transform for the BESIII drift chamber

Radiation Detection Technology and Methods 2018年第1期2卷 136-143页

作者： Jin Zhang Yao Zhang Huai-Min Liu Ye Yuan Xue-Yao Zhang Liao-Yuan Dong Zhen Huang Xiao-Bin Ji Hai-Bo Li Wei-Guo Li Jia-Da Lu Yohei Nakatsugawa Liang-Liang Wang Meng Wang Ling-Hui Wu Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049People’s Republic of China University of Chinese Academy of Sciences Beijing 100049People’s Republic of China Shandong University Jinan 250100People’s Republic of China

Background The multilayer drift chamber(MDC)is one of the key detectors at the BESIII,which is mainly responsible for the precise measurement of charged *** reconstruction efficiency of charged particles with a wide range of momentums is a basic requirement for the MDC reconstruction *** The purpose is to improve the tracking efficiency at the low transverse momentum *** The Hough transform is a mathematical method that can map hits in a detector to parameter space to find tracks *** this paper,we have used it as the basis for developing a new tracking algorithm to find tracks in *** addition,the drift distances of hits are considered when implementing Hough *** This tracking algorithm is implemented in the BESIII offline software system,and its performance is checked using both Monte Carlo and *** results show that this tracking method improves reconstruction efficiency at the low transverse momentum *** The tracking algorithm based on Hough transform is proved to be beneficial for the MDC low transverse momentum tracking,and has been used in BESIII offline data reconstruction .

关键词： Drift chamber Hough transform Track reconstruction tracking efficiency

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Development of Hybrid MPPT Algorithm for Maximum Power Harvesting under Partial Shading Conditions

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Circuits and Systems 2016年第8期7卷 1611-1622页

作者： Kannabiran Kanimozhi Bagarudeen Raja Mohamed Rabi Department of Electrical and Electronics Engineering ULTRA College of Engineering and Technology for Women Madurai India Department of Mechanical Engineering ULTRA College of Engineering and Technology for Women Madurai India

In this paper, a Hybrid MPPT algorithm is proposed to improve the efficiency of photovoltaic (PV) systems under partial shading conditions. Partial shading occurs due to clouds, trees, dirt and dust in PV systems. In partial shading, multiple peaks arise in the PV characteristic curve. The Maximum power point tracking (MPPT) algorithm adjusts the duty cycle of the switch in DC-DC converter for regulating the input voltage at the Maximum power point (MPP) and to provide impedance matching i.e. input resistance of converter equal to equivalent solar resistance of PV system at MPP for the maximum power transfer. The Cuk converters have low switching losses and the highest efficiency. Therefore Cuk converter is chosen as power conditioning circuit to trackmaximum power using Hybrid MPPT technique. The influence of algorithm parameters on system behaviour is investigated and the various advantages and drawbacks of the technique are identified for different weather conditions. Practical results obtained using Solartech SPMO85P PV modules connected to a RL load through Hybrid MPPT controller validates the simulated results.

关键词： PV System DC-DC Converter Hybrid MPPT Controller tracking efficiency Partial Shading

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Research and Implementation of a Testing Method in Target tracking Based on Multi-Radar Information Fusion

Research and Implementation of a Testing Method in Target Tr...

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2011 International Conference on Computer Science and Information Technology(ICCSIT 2011)

作者： Wang Xiaoxuan Wang Weimin Diao Lianwang Science and Technology on Information Systems Engineering Laboratory Nanjing Research Institute of Electronics Engineering Air Force Research Department Nanjing Research Institute of Electronics Engineering

ISBN: (纸本)9781510811249;1510811249

According to the target characteristics in multi-Rader information fusion systems, an index-based testing method in target tracking has been proposed. In addition, a testing prototype system has been designed and a testing simulation model has been established. The index data were extracted from a multi-Radar information system in antiaircraft battlefield, and have been evaluated in our testing prototype system. Experimental results indicate the feasibility and rationality of our testing method.

关键词： multi-Rader information fusion target tracking precision tracking efficiency evaluation index

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