基于LoRa的长距离室内定位的研究

摘要

现有的室内定位技术在定位精度、距离以及抗干扰能力方面都各有优缺点.借助低功耗、超长距离无线通信技术LoRa(Long Range),对长距离室内定位方法进行研究.将LoRa在短距离室内区域中的定位结果与Wi-Fi进行比较,验证基于LoRa的室内定位的可行性.详细分析以宽阔的矩形室内区域和狭长的矩形室内区域为实验场景的定位结果.同时对产生的偏差给出可能原因和减小偏差的方法.在基于SX1276芯片进行的三次实验结果可以看出,LoRa在通信距离以及抗干扰能力上有较明显的优势,可作为长距离室内位置服务的解决方案.%The existing indoor positioning technology has advantages and disadvantages in positioning accuracy,distance and anti-interference ability.In this paper,long-range indoor positioning method was studied by using LoRa (Long Range),a low-power and ultra-long-range wireless communication technology.LoRa positioning results in the short-range indoor area were compared with Wi-Fi to verify the feasibility of indoor positioning based on LoRa.The positioning results of a large rectangular indoor area and a narrow rectangular indoor area were analyzed in detail.At the same time,the possible causes and the methods to reduce the deviation were given.Based on the results of three experiments based on SX1276 chip,it can be seen that LoRa had obvious advantages in communication distance and anti-jamming capability,and can be used as a solution for long-distance indoor location service.