A real-time vehicle tracking method is proposed for trattlC monitoring system at roau mte^cc- tions, and the vehicle tracking module consists of an initialization stage and a tracking stage. Li- cense plate location b...A real-time vehicle tracking method is proposed for trattlC monitoring system at roau mte^cc- tions, and the vehicle tracking module consists of an initialization stage and a tracking stage. Li- cense plate location based on edge density and color analysis is used to detect the license plate re- gion for tracking initialization. In the tracking stage, covariance matching is employed to track the license plate. Genetic algorithm is used to reduce the computational cost. Real-time image tracking of multi-lane vehicles is achieved. In the experiment, test videos are recorded in advance by record- ers of actual E-police systems erage false detection rate and at several different city intersections. In the tracking module, the av- missed plates rate are 1.19%, and 1.72%, respectively.展开更多
随着油气管道安全性管理要求的不断提高,为实时掌握清管器位置,减少人力成本,降低管道堵塞风险,需要实时掌握清管器的位置。本文对光纤传感技术在管道清管器的应用做了详细说明,采用F I R滤波和维纳滤波对系统探测到的振动信号进行增强...随着油气管道安全性管理要求的不断提高,为实时掌握清管器位置,减少人力成本,降低管道堵塞风险,需要实时掌握清管器的位置。本文对光纤传感技术在管道清管器的应用做了详细说明,采用F I R滤波和维纳滤波对系统探测到的振动信号进行增强,对清管器跟踪算法进行了设计和验证。此外,还将现有清管器跟踪技术进行分析和比较。展开更多
The precision of VLBI tracking delays and the positioning reduction results during the real-time tracking phase of the Chang'E-2 satellite are statistically analyzed.The application of the positioning reduction to...The precision of VLBI tracking delays and the positioning reduction results during the real-time tracking phase of the Chang'E-2 satellite are statistically analyzed.The application of the positioning reduction to the real-time monitoring of pivotal arcs of the Chang'E-2 satellite is discussed.The technical specifications of the tests of tracking and control systems in X-band are estimated and evaluated via the positioning reduction method.Useful methodology and software are prepared and practical experience in engineering and technology is accumulated for the follow-up lunar and deep space explorations of China.展开更多
基金Supported by the National Natural Science Foundation of China(No.61005034)China Postdoctoral Science Foundation and under Grant(No.2012M510768)the Science Foundation of Hebei Province under Grant(No.F2012203182)
文摘A real-time vehicle tracking method is proposed for trattlC monitoring system at roau mte^cc- tions, and the vehicle tracking module consists of an initialization stage and a tracking stage. Li- cense plate location based on edge density and color analysis is used to detect the license plate re- gion for tracking initialization. In the tracking stage, covariance matching is employed to track the license plate. Genetic algorithm is used to reduce the computational cost. Real-time image tracking of multi-lane vehicles is achieved. In the experiment, test videos are recorded in advance by record- ers of actual E-police systems erage false detection rate and at several different city intersections. In the tracking module, the av- missed plates rate are 1.19%, and 1.72%, respectively.
文摘随着油气管道安全性管理要求的不断提高,为实时掌握清管器位置,减少人力成本,降低管道堵塞风险,需要实时掌握清管器的位置。本文对光纤传感技术在管道清管器的应用做了详细说明,采用F I R滤波和维纳滤波对系统探测到的振动信号进行增强,对清管器跟踪算法进行了设计和验证。此外,还将现有清管器跟踪技术进行分析和比较。
基金supported by the National Natural Science Foundation of China (Grant Nos.10973030 and 11178024)China’s Lunar Exploration Project (Chang’E-2 mission,Chang’E-3 mission)the Committee of Science and Technique of Shanghai (Grant No.06DZ22101)
文摘The precision of VLBI tracking delays and the positioning reduction results during the real-time tracking phase of the Chang'E-2 satellite are statistically analyzed.The application of the positioning reduction to the real-time monitoring of pivotal arcs of the Chang'E-2 satellite is discussed.The technical specifications of the tests of tracking and control systems in X-band are estimated and evaluated via the positioning reduction method.Useful methodology and software are prepared and practical experience in engineering and technology is accumulated for the follow-up lunar and deep space explorations of China.
