Beidou GPS dual-mode positioning method, positioning terminal and positioning system

Abstract

The invention relates to a Beidou GPS dual-mode positioning method, positioning terminal and positioning system. The method comprises steps of receiving satellite positioning data information, and according to the satellite positioning data information, reading a second pseudo range between the Beidou GPS dual-mode positioning terminal and a positioning satellite; receiving a difference factor broadcast by a base station and correcting the second pseudo range according to the difference factor so as to obtain a second real range between the Beidou GPS dual-mode positioning terminal and the positioning satellite; and according to the second real range and the satellite positioning data information, calculating the precise coordinate of the Beidou GPS dual-mode positioning terminal, thereby finishing positioning. According to the invention, according to the difference between a measurement position and an actual position between the base station and the positioning satellite, the difference factor is generated, and according to the difference factor, the measurement position of the Beidou GPS dual-mode positioning terminal is acquired and corrected, so the precise position of the Beidou GPS dual-mode positioning terminal is obtained, and the high precision positioning of the position is achieved.

Description

technical field [0001] The invention relates to the technical field of intelligent positioning, in particular to a Beidou GPS dual-mode positioning method, a positioning terminal and a positioning system. Background technique [0002] At present, the existing mainstream positioning system generally adopts single-point positioning, which is limited by the accuracy error of GPS itself and the error caused by the influence of the atmosphere during the transmission process, which makes it difficult for the positioning accuracy to meet the actual needs. The positioning accuracy is generally above 5 meters. , which cannot meet the needs of high-precision positioning. However, the existing high-precision positioning equipment is generally used in the field of surveying and mapping, and requires long-term observation to achieve precise positioning. The efficiency is relatively low, and it cannot meet the normal needs in occasions that require fast and accurate positioning. Content...

AI Technical Summary

Problems solved by technology

[0002] At present, the existing mainstream positioning system generally adopts single-point positioning, which is limited by the accuracy error of GPS itself and the error caused by the influence of the atmosphere during the transmission process, which makes it difficult for the positioning accuracy to meet the actual needs. The positioning accuracy is generally above 5 meters. , unable to meet the needs of high-precision positioning

However, the existing high-precision positioning equipment is generally used in the field of surveying and mapping, and requires long-term observation to achieve precise positioning. The efficiency is relatively low, and it cannot meet the normal needs in occasions that require fast and accurate positioning.

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