摘要
为了有效、准确获取铁路站场调车、列检作业过程中人员、设备的位置信息,及时发现异常状况,提高应急响应和事件处置的速度,提出了一种基于LoRa的GNSS差分定位系统设计方案。系统由LoRa无线通信网络和GNSS差分定位模块组成,LoRa可以实现数据的无线传输,GNSS差分定位模块包括移动接收机和基准站。基准站依据已知位置的精确坐标,计算出基准站到GNSS导航定位卫星的差分改正数据。移动接收机接收来自卫星的位置信息和基准站的差分改正数据,经过算法处理,得出校正后的定位信息。该定位信息通过LoRa无线数据传输网络传输到服务器,最终在显示终端中显示。
In order to effectively acquire the location information of the personnel and the equipment in the process of the railway station shunting and the train inspection, discover the abnormal situation in time and enhance the emergency handling speed, a GNSS differential positioning system based on LoRa wireless communications was proposed. The proposed system consists of LoRa wireless communications and the GNSS differential positioning module. The former is used to achieve the wireless data transmission, while the latter is comprised of the mobile receiver and the reference station. The reference station calculates the differential correction data from the base station to the GNSS navigation positioning satellite based on the accurately known location coordinate. The differential correction data is received by the mobile receiver receives and processed by the algorithm to derive the revised positioning information. The positioning information is transferred to the server by the LoRa wireless data transmission network and displayed on the display terminal.
出处
《移动通信》
2017年第23期61-65,共5页
Mobile Communications
