基于nanoPAN的嵌入式定位系统的设计与实现

摘要

In order to overcome the defects of current positioning technology such as poor positioning accuracy and limited application area,we designed a new two-dimensional plane positioning system,which is based on nanoPAN5375 RF transceiver module and embedded ARMdevice.Its software design is mainly composed of lower computer software and host computer software.Lower computer is used for location data collection,calculation and display alone;host computer is used to timely monitor and display entire positioning process.The system uses SDS-TWR location algorithm and trilateral centroid algorithm to calculate the location of coordinates.It is indicated by practical application that the system has ranging precision within the scope of ±0.2 m and ranging area over 1 km2 ,meets the requirement of technical scheme.%针对目前定位技术存在的定位精度不高及定位范围不广的缺陷，设计并实现一种基于 nanoPAN5375无线射频收发模块和嵌入式 ARM设备的二维平面定位系统。系统软件设计由下位机软件和上位机软件组成。下位机用于收集定位数据、计算和单独显示；上位机用于对整个定位过程进行实时监控显示。系统采用 SDS-TWR 测距算法和三边质心算法对坐标位置进行计算。实际应用表明，该系统的测距精度在±0．2米范围内，测距范围达到1平方公里以上，达到了技术方案的要求。