基于Fang算法的TDOA室内定位技术

传统基于全球定位系统(GPS)的定位技术应用，已在室外环境下为人们提供了许多便利。随着近年来人们生活水平的不断提高，大众对定位的诉求已不仅限于室外，在智慧商场、企业人员智能管理、校园智能管理等场景，要求对室内用户进行定位监测，而传统的GPS定位精确度有限，在室内已无法应用。目前室内定位常用的技术有红外线、蓝牙、Wi-Fi以及基于室内移动网路的无线定位等，无线定位则是其中的热点。本文介绍了一种基于室内分布式基站，运用Fang算法实现到达时间差(TDOA)定位的技术研究，并对其定位精确度进行了探索。

TDOA indoor location technology based on Fang algorithm

The traditional positioning system based on Global Positioning System(GPS) has provided a lot of convenience for people in the outdoor environment. With the continuous improvement of people''s living standards in recent years, the indoor location is more and more popular in intelligent shopping malls and intelligent campus. The traditional GPS location accuracy is limited, so it cannot be used indoor. At present, indoor location technology mainly includes infrared, Bluetooth, Wi-Fi and wireless location which relates to indoor mobile network. Among them, wireless location technology is a research hotspot. A research of indoor Time Difference Of Arrival(TDOA) location technology based on Fang algorithm is introduced, and its location accuracy is analyzed.