Localization subsystem of vehicle self-building net system and localization method thereof

Abstract

The invention provides a positioning subsystem for a vehicle ad hoc network system and a positioning method and relates to an embedding vehicle-mounted positioning subsystem platform in a certain range, a vehicle positioning technology and a method, moreover, the invention belongs to the related technical field of the vehicle ad hoc network. The invention is characterized in that the subsystem consists of a GPS satellite positioning receiving device, a movement direction sensor, a speed collection module, a storage equipment, etc., and adopts the way of combining the GPS satellite positioning technology and the sensor positioning technology. The positioning method is characterized in that when the GPS satellite positioning function is normal, the GPS satellite positioning technology can be adopted for reliable positioning; when the GPS satellite positioning function is unusual, the speed and the directional data of the present vehicle collected by the sensor are combined with the related algorithm and the electronic map stored in the storage equipment to realize emergency positioning; the GPS satellite positioning technology can be restored for reliable positioning till the GPS satellite positioning function is played stably and reliably again. The technical category of positioning is expanded and the dependency of the vehicle positioning function on the objective environment is reduced, moreover, the environmental suitability of the positioning function is increased.

Description

Technical field [0001] A positioning subsystem and positioning method of a vehicle ad hoc network system relates to an embedded vehicle positioning subsystem platform, vehicle positioning technology and method within a certain range, and belongs to the relevant technical field of a vehicle ad hoc network. Background technique [0002] In the vehicle ad hoc network system, the transmission and relaying of information between vehicles often requires knowledge of the relative or absolute geographic location between the vehicles. This requires the vehicles participating in the ad hoc network to have their own positioning function to obtain the specific information of each vehicle. location information. [0003] The GPS global positioning system is a positioning method. The GPS satellite positioning system matches the longitude and latitude information it obtains to map to determine the specific location of the vehicle. However, the GPS satellite positioning system has special requirem...

AI Technical Summary

Problems solved by technology

The system collects the data required by DR technology through gyroscopes and odometers, and calculates the required data such as direction through the collected data, and uses the joint Kalman filter algorithm for information fusion. The implementation and algorithm of the whole system are relatively complicated. Moreover, the acquisition of direction data requires additional calculations

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