Mobile base station positioning method based on wireless communication network

Abstract

The method comprises: installing the GPS receiver at any location of the scene as a base station; the GPS receiver receives the GPS satellite signals and generates the differential correction information; the differential correction information is uploaded to the relay server via radio communication network; the relay server sends the differential correction information to the user's receiver of mobile station via radio communication network; the mobile station receives the GPS satellite carrier and pseudo range signal and navigation message, and receives the differential information from relay server via the radio communication network so as to realize the relative positioning between the base station and mobile station; making coordinate conversion and calculation for the positioning result to the user-desired coordinate.

Description

technical field [0001] The invention relates to a real-time positioning method, in particular to a mobile base station positioning method based on a wireless communication network, belonging to the technical fields of communication and surveying and mapping. Background technique [0002] In conventional GPS real-time kinematic (hereinafter referred to as RTK) positioning, a GPS receiver is usually placed near the survey area as a reference station, and a transmitting station is configured, and the reference station sends the differential correction information to the nearby rover station through the station user, so as to realize RTK relative positioning and obtain the coordinates of the rover user. During the entire positioning process, the reference station sends data to the rover one-way, whether the rover can receive the data, and the working status of the rover cannot be confirmed by the reference station. Obviously, the positioning of this model is not suitable for ce...

AI Technical Summary

Problems solved by technology

The existing wireless communication methods mainly include: ultrashort wave (230MHz) wireless data transmission, spread spectrum, satellite communication, GSM digital cellular communication system, etc. Among them, satellite communication is only used in some special fields due to high communication costs, and has not been popularized. ; Although the spread spectrum communication technology has a high rate, it can only be transmitted within the line of sight, and its application is also limited

The use of ultra-short wave digital transmission stations as the transmission channel has the advantages of flexible networking, easy expansion, convenient maintenance, and low operating costs. However, since the system works at 230MHz and mostly uses ordinary indirect modulation digital transmission stations, this makes the system susceptible to external interference. , low communication rate, high bit error rate, small amount of data transmission, small signal coverage, etc.

Images