摘要
为了解决普适计算环境下室内外无缝定位问题,提出了一种卫星定位和无线传感器网络组合定位的算法。算法主要利用了GPS卫星定位系统伪距观测数据和无线传感器网络距离观测数据联合进行位置解算。仿真结果表明,算法与传统的GPS定位相比,增加定位的适应范围,实现少于4颗可用卫星情况下的定位;与无线传感器网络定位算法相比,提高了定位精度。
An integrated location algorithm using satellite location and wireless sensor networks （WSN） is put forward to solve the issues of seamless location both indoors and outdoors in a pervasive computing environment in this paper. A global positioning system （GPS） integrating observation data with WSN distance observation data is utilized to carry out location compute. Simulation results show that comparing with traditional GPS location algorithm, adaptation range is increased and location with less than four satellites is realized using the algorithm.
出处
《计算机仿真》
CSCD
北大核心
2009年第11期145-148,共4页
Computer Simulation
关键词
无缝定位
无线传感器网络
加权最小二乘
数据融合
Seamless location
Wireless sensor network
Weighted least squares
Data integration
