The network integration provides users with a new network with long connection time and a high data rate when needed, but it also brings the defects of all the networks that integrate together into the integrated netw...The network integration provides users with a new network with long connection time and a high data rate when needed, but it also brings the defects of all the networks that integrate together into the integrated network. This will cause all kinds of existing and some new security problems in the operation of the integrated network. A complete protection based on recovery is proposed in the paper. It uses the public-key algorithm to authorize and private-key algorithm to encrypt the communicating data. This solution can provide the system with reliable security, and avoid Denial of Service (DoS) of the user. This solution has been proposed lately, and we should further identify the correct action of all the layers and figure out how to react when a legal node is framed by multiple malicious nodes.展开更多
接收信号强度(received signal strength,RSS)浮动和无线接入点缺失是制约无线局域网(wirelesslocal area network,WLAN)定位精度的主要问题。利用智能终端已有的MARG(magnetic,angular rate,andgravity)传感器,设计了基于粒子滤波和卡...接收信号强度(received signal strength,RSS)浮动和无线接入点缺失是制约无线局域网(wirelesslocal area network,WLAN)定位精度的主要问题。利用智能终端已有的MARG(magnetic,angular rate,andgravity)传感器,设计了基于粒子滤波和卡尔曼滤波的数据融合算法,实现了一个低成本高精度的WLAN/MARG组合定位系统。该系统利用WLAN和MARG定位技术的互补特性,有效校正了由RSS浮动引起的定位误差和由传感器噪声引起的累积误差。室内WLAN环境下的实验结果表明,本文所提系统,相比WLAN和MARG定位系统,定位均方根误差分布减少了62%和91%,并且有效扩大了系统应用范围。展开更多
文摘The network integration provides users with a new network with long connection time and a high data rate when needed, but it also brings the defects of all the networks that integrate together into the integrated network. This will cause all kinds of existing and some new security problems in the operation of the integrated network. A complete protection based on recovery is proposed in the paper. It uses the public-key algorithm to authorize and private-key algorithm to encrypt the communicating data. This solution can provide the system with reliable security, and avoid Denial of Service (DoS) of the user. This solution has been proposed lately, and we should further identify the correct action of all the layers and figure out how to react when a legal node is framed by multiple malicious nodes.
文摘接收信号强度(received signal strength,RSS)浮动和无线接入点缺失是制约无线局域网(wirelesslocal area network,WLAN)定位精度的主要问题。利用智能终端已有的MARG(magnetic,angular rate,andgravity)传感器,设计了基于粒子滤波和卡尔曼滤波的数据融合算法,实现了一个低成本高精度的WLAN/MARG组合定位系统。该系统利用WLAN和MARG定位技术的互补特性,有效校正了由RSS浮动引起的定位误差和由传感器噪声引起的累积误差。室内WLAN环境下的实验结果表明,本文所提系统,相比WLAN和MARG定位系统,定位均方根误差分布减少了62%和91%,并且有效扩大了系统应用范围。
