Vehicle-mounted positioning system and automatic driving vehicle

Abstract

The invention discloses a vehicle-mounted positioning system and an automatic driving vehicle. One specific implementation manner of the system comprises a sensor assembly, an automobile computer and man-machine interaction equipment, wherein the sensor assembly is used for acquiring external environment information, position information and attitude information of the automatic driving vehicle; the automobile computer is used for receiving the external environment information, the position information and the attitude information from the sensor assembly, determining absolute positioning information of the automatic driving vehicle at the current moment based on the external environment information, the position information and a high-precision map, carrying out motion compensation based on the external environment information and the attitude information to obtain relative positioning information of the automatic driving vehicle at the current moment, and fusing the absolute positioning information and the relative positioning information to obtain self-positioning information of the automatic driving vehicle at the current moment; the man-machine interaction equipment is used for representing the self-positioning information. By adopting the implementation manner, the precision of the self-positioning information is improved and the accuracy of the self-positioning information, which is output when communication of the system is temporarily stopped or hindered, is improved.

Description

technical field [0001] The present application relates to the field of automobiles, in particular to the technical field of automatic driving, especially to a vehicle positioning system and an automatic driving vehicle. Background technique [0002] Existing vehicle positioning systems, such as Global Positioning System (GPS), Beidou satellite navigation system and GLONASS satellite navigation system, can provide high-precision, high-speed Reliable positioning, navigation, timing services, and short message communication capabilities. [0003] However, this type of positioning system has a certain degree of error due to the positioning system itself. For example, the positioning accuracy of the Beidou satellite navigation system is 10 meters, the speed measurement accuracy is 0.2 m / s, and the timing accuracy is 10 nanoseconds. It also reduces efficiency when bridges, tunnels, or other overhead objects temporarily block or impede the system's communications, for example, so ...

AI Technical Summary

Problems solved by technology

[0003] However, this type of positioning system has a certain degree of error due to the positioning system itself. For example, the positioning accuracy of the Beidou satellite navigation system is 10 meters, the speed measurement accuracy is 0.2 m / s, and the timing accuracy is 10 nanoseconds. For example, when bridges, tunnels, or other overhead objects temporarily block or hinder the communication of the system) also reduce efficiency, so the output positioning information is less accurate and has higher error

Images