一种基于WSN信号强度的位置指纹定位方法

随着近年来网络与通信技术的大发展，人们对各种定位信息的需求也日益增大。虽然在室外定位中，GPS技术可以满足人们较高的定位需求，但其在室内的定位效果却令人难以接受。而近些年来无线传感网络（WSN）的发展，恰好为我们提供了一种成本低、实施简便、定位精度高的室内定位方法。文中提出了一种基于无线信号强度的室内定位算法，阐述了其定位原理，并以ZigBee无线网络为基础搭建了基于该算法原理的室内定位系统。最后，通过在实际环境中对该定位系统的测试，得出其最大定位偏差达到3m以内，平均定位偏差达到2m以内。

Based on the location of the WSN signal strength fingerprint positioning method

with the great development of network and communication technology in recent years, people demand for all kinds of information are also increasing.Although in outdoor positioning, GPS technology can meet the demand of people high positioning, but in the indoor location performance is unacceptable.In recent years the development of wireless sensor network（ WSN ） , to provide us with a kind of low cost, easy implementation, high positioning accuracy of indoor location method.This paper puts forward a kind of indoor location algorithm based on wireless signal strength, expounds its positioning principle, and based on the ZigBee wireless network set up based on the principle of the algorithm is indoor positioning system.Finally, through the test in a real environment of the positioning system, it is concluded that the biggest positioning deviation within reach 3 m, average position deviation within 2 m.