Vehicle positioning system based on four star fusion

Abstract

In order to solve the problem that the current vehicle positioning accuracy is not high, real-time positioning often fails due to satellite signals being blocked in urban high-rise areas, canyons, tunnels and other areas, the present invention proposes a vehicle positioning system based on four-star fusion, which includes Space-based positioning system, ground-based augmentation system, ground monitoring system, wireless network communication system and vehicle terminal system, space-based positioning system includes Beidou satellite navigation system, global positioning system (GPS), GLONASS satellite navigation system (GLONASS) and Galileo satellite navigation system. Ground-based augmentation systems include the Continuously Operating Satellite Reference System (CORS) and the Beidou Ground-based Augmentation System. Through the four-star fusion space-based system, it effectively solves satellite ephemeris error, satellite signal transmitting antenna phase error, satellite clock error, troposphere and ionosphere delay, receiver phase center deviation and relativistic effect, etc., which can greatly improve positioning Accuracy and positioning effect.

Description

technical field [0001] The invention relates to satellite application technology, in particular to a vehicle positioning system based on four-star fusion. Background technique [0002] In recent years, satellite navigation technology has provided support for the pillar industries of the national economy such as transportation, surveying and mapping, meteorology and other departments, and at the same time provided convenience for people's driving, travel, and tourism. Satellite navigation technology has important and extensive applications in both military and civilian applications. Applications, navigation accuracy, coverage, and focusing speed have become the yardstick for the development level of the satellite navigation industry. [0003] With the increase of vehicles and the increase of travel, the demand for positioning and navigation is gradually increasing, and people's requirements for the accuracy of navigation and the coverage of navigation and positioning are also...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the current vehicle positioning accuracy is not high, real-time positioning often fails due to satellite signals being blocked in urban high-rise areas, canyons, tunnels and other areas, the present invention proposes a vehicle positioning system based on four-star fusion, which includes Space-based positioning system, ground-based augmentation system, ground monitoring system, wireless network communication system and vehicle terminal system

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