Multi-base-station satellite differential positioning and inertia combination vehicle precise positioning method

Abstract

The invention relates to a method which is based on the technology of satellite differential positioning and inertial navigation, employs the data fusion and wireless bandwidth data communication, and achieves the precise positioning of a vehicle. The invention aims at effectively integrating various types of positioning navigation technologies, the data fusion and the wireless bandwidth data communication into a seamless positioning system suitable for intelligent traffic, providing real-time stable continuous position information for a sub-meter level to a centimeter level for a running vehicle, and achieving the lane-level positioning navigation of the vehicle. The technical scheme of the invention is that the method employs a reference station and a moving terminal, wherein the reference station is installed nearby a road, and consists of a satellite receiver of the reference station and a wireless bandwidth data communication module; the data is transmitted according to the demands of the moving terminal; the moving terminal is disposed on the vehicle, consists of the wireless bandwidth data communication module and a combined positioning system, can actively visit a plurality of reference stations for obtaining data to complete the multi-base-station differential positioning, and also can adjust the updating frequency of data transmission in real time.

Description

technical field [0001] The invention relates to a precise positioning method involving satellite real-time differential technology, inertial navigation, data fusion and wireless broadband data communication, which can continuously provide high-precision positioning services for vehicles. Background technique [0002] The intelligent transportation system applies advanced electronic information technology to transportation to realize efficient and value-added services, many of which are based on vehicle location information, so the positioning system is a basic platform in the intelligent transportation system. Intelligent transportation systems can use satellite positioning and navigation systems to provide location services for ground vehicles through space-based satellites. At present, the GNSS (satellite positioning and navigation) receiver installed on the vehicle can only rely on itself to receive satellite signals to complete single point positioning (SPP), and the acc...

AI Technical Summary

Problems solved by technology

[0011] The technical problem to be solved by the present invention is to provide a seamless positioning system that can meet vehicle decimeter-level to centimeter-level positioning requirements in view of business requirements in intelligent transportation and existing system deficiencies. The system integrates inertial navigation, satellite real-time Differential positioning technology, data fusion and wireless broadband communication network can meet the high-precision positioning problems of vehicles in various complex road environments, and provide vehicles with continuous positioning and navigation services at the lane level

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