位置指纹法的定位原理_蓝牙定位软件_位置指纹定位算法(2)

本文首先从课题的研究背景，的最新研究状况及课题的研究意义等方面分析WIFI位置指纹定位技术的大概内容，从第二章到第四章全面分析了指纹定位的核心技术。

关键词：WIFI位置指纹定位

The research of fingerprint based on WiFi positioning

technology

Abstract

With the rapid development of mobile communications,

wireless network technology, people are increasing demand for access to the location service, which makes the

location-aware computing and services play a role in real life more and more important.

Current GPS global positioning system (GPS) is to obtain the outdoor environment location information is the most commonly used.But as a result of the satellite signal is vulnerable to all sorts of obstacles block, so the

satellite positioning technology does not apply to indoor or high-rise buildings, so the rapid development of wireless indoor positioning technology has become a powerful supplement of GPS.

WIFI location fingerprinting positioning technology is based on the received signal propagation and to locate, compared with the traditional indoor positioning

technology, its extensibility and wider application

range.Because the WIFI signal transmission when affected by factors such as non line-of-sight, multipath fading is small, so the fingerprint positioning system based on WIFI network stability strong, and positioning technology

based on infrared or video signal when use limited more easily, such as: based on infrared technology under direct sunlight or fluorescent light positioning accuracy will be greatly reduced, and based on video signal using the premise is mobile terminal positioning technology must be

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