【摘要】 非视距传播是影响定位精度的主要因素,深入研究信号强度的统计特性有利于定位精度的提高。基于RSSI的位置指纹定位技术因其设备简单,定位精度高而成为近年来定位技术研究的焦点。在对信号强度的统计特性深入分析的基础上,结合AP ID与移动台位置之间的关系提出一种改进的基于AP ID过滤的无线局域网位置指纹定位算法。并借助MATLAB仿真对比了改进前后的算法性能,证明了改进算法的不仅降低了计算复杂度,且提高了定位精度。更多还原

【Abstract】 Non-line of sight(NLOS) propagation is the dominant factor resulting in location error.Study on the statistical property of RSSI is beneficial to improving the accuracy of location.Because of its simple equipment and high accuracy,fingerprinting positioning technology based on RSSI becomes the focus for the research of positioning technology in recent years.Based on the in-depth analysis of RSSI statistical property and combined with the relationship between AP ID and the location of MS(Mobile Station),an improved fingerprinting location algorithm based on the filter of AP ID is proposed.And with the simulation platform of MATLAB,the fingerprinting location algorithms are simulated and analyzed.The simulation results show that the proposed method could reduce the computational complexity while improving the location accuracy.更多还原