近期在世界各地发生的群体性事件、恐怖事件等社会安全事件对社会安全管理提出了新的挑战。在警力资源有限的情况下,如何有效处理这类重大突发事件就成为公共安全研究的一个重要课题。针对现存的安全问题,基于线上-线下多源信息联合监...近期在世界各地发生的群体性事件、恐怖事件等社会安全事件对社会安全管理提出了新的挑战。在警力资源有限的情况下,如何有效处理这类重大突发事件就成为公共安全研究的一个重要课题。针对现存的安全问题,基于线上-线下多源信息联合监控方案,该文提出一种基于E-V融合的信息融合系统,该系统同时采集手机信号数据（E数据）和监控摄像头数据（V数据）,并通过数据融合从两方面获取人的位置与身份信息。通过实验室测试,结果表明：该系统能够在少数人情况下完成视频的人物位置信息、手机MAC（media access control）地址、手机接收信号强度（receive signal strength,RSS）信息的融合,完成作为线上信息与线下信息结合点的功能。展开更多
A TEM cell designed to operate at 900 MHz for exposing small-restrained animals (e.g. mice) has been theoretically, numerically and experimentally characterized at 2.45 GHz, which is the central frequency of the WiFi ...A TEM cell designed to operate at 900 MHz for exposing small-restrained animals (e.g. mice) has been theoretically, numerically and experimentally characterized at 2.45 GHz, which is the central frequency of the WiFi protocol. This study aims at evaluating the influence of higher order modes on the field homogeneity. The results demonstrate the superimposition of a tolerable standing wave, due to reflections at the cell terminations, and a slight beat wave due to the interference between different modes. Nevertheless, the final outcome is that the system can still be efficiently used to expose small animals in specific WiFi channels, provided they are properly placed in correspondence to the maxima of the electric field along the guide length.展开更多
文摘近期在世界各地发生的群体性事件、恐怖事件等社会安全事件对社会安全管理提出了新的挑战。在警力资源有限的情况下,如何有效处理这类重大突发事件就成为公共安全研究的一个重要课题。针对现存的安全问题,基于线上-线下多源信息联合监控方案,该文提出一种基于E-V融合的信息融合系统,该系统同时采集手机信号数据（E数据）和监控摄像头数据（V数据）,并通过数据融合从两方面获取人的位置与身份信息。通过实验室测试,结果表明：该系统能够在少数人情况下完成视频的人物位置信息、手机MAC（media access control）地址、手机接收信号强度（receive signal strength,RSS）信息的融合,完成作为线上信息与线下信息结合点的功能。
文摘A TEM cell designed to operate at 900 MHz for exposing small-restrained animals (e.g. mice) has been theoretically, numerically and experimentally characterized at 2.45 GHz, which is the central frequency of the WiFi protocol. This study aims at evaluating the influence of higher order modes on the field homogeneity. The results demonstrate the superimposition of a tolerable standing wave, due to reflections at the cell terminations, and a slight beat wave due to the interference between different modes. Nevertheless, the final outcome is that the system can still be efficiently used to expose small animals in specific WiFi channels, provided they are properly placed in correspondence to the maxima of the electric field along the guide length.
