基于Shadowing模型的无线入侵主机物理定位研究  

Research on the Location of Wireless Invading Host Based on Shadowing Model

作　　者：付雄[1] 彭冰[2] 

机构地区：[1]武汉大学法学院,湖北武汉430072 [2]华中科技大学计算机科学与技术学院,湖北武汉430074

出　　处：《微电子学与计算机》2010年第12期4-9,共6页Microelectronics & Computer

基　　金：中国博士后科学基金项目(20090460973)

摘　　要：为了在室内无线局域网环境中及时准确地定位非法入侵主机物理位置,以无线信号强度衰减过程的Shadowing传播模型为基础,研究了在一定的范围内如何合理地布置探测器,如何根据接收到的入侵主机的信号强度进行物理定位的问题.提出的定位方法可以有效地对抗入侵主机随机更改信号发射功率对定位精度的影响.实际测试结果表明,该方法定位误差平均约为2.3 m,可以满足室内环境下定位非法入侵主机的需求.In order to timely and accurately locate the physical position of illegal intrusion workstation in indoor WLAN environment,based on shadowing model,one of the most popular wireless signal strength reduction process,some position techniques in indoor WLAN are given in this paper.Our researches include how to layout sensors reasonably within a certain scope and how to calculate the position of intrusion workstation according to the signal strength received by the sensors.Although the intrusion workstation can randomly adjust its signal transmit power of,it is still effective to resist the accuracy reducing result by use of the introduced location method.The actual test result shows the location error is about 2.3 m on an average,which meets the requirement of intrusion workstation positioning in indoor environment.

关 键 词：无线局域网 室内定位算法 信号强度 Shadowing模型 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]