Method and system for triangulation positioning based on single radar

Abstract

The invention discloses a method for triangulation positioning based on a single radar, and the method is used for determining the position of an obstacle through a vehicle side radar, and comprises the following steps: S1, obtaining vehicle operation data, and building a coordinate system according to the vehicle operation data; S2, acquiring the coordinate of the radar at the first moment as a first coordinate, and taking the distance between the radar and the obstacle at the first moment as a first distance; s3, acquiring the coordinate of the radar at the second moment as a second coordinate, and taking the distance between the radar and the obstacle at the second moment as a second distance; and S4, determining coordinates of the obstacle according to the first coordinate, the second coordinate, the first distance and the second distance. The invention further discloses a system for triangulation positioning based on the single radar, the system is used for positioning obstacles on the side face of the vehicle, the hardware cost is saved by adopting the single radar, and vehicle accidents are avoided.

Description

technical field [0001] The invention relates to the technical field of vehicle radar, in particular to a method and system for triangulating positioning based on a single radar. Background technique [0002] The existing vehicle radar positioning is generally to install at least one radar at the front and the rear of the vehicle, detect the obstacles in front and rear of the vehicle through the detection waves emitted by the radar, and calculate according to the radar detection data to obtain the radar and obstacle According to the calculated distance, it is judged whether it is necessary to activate the emergency braking system of the vehicle to ensure the driving safety of the vehicle; for vehicles with different configurations, the number of detection radars is different, and the detection accuracy is also different. [0003] However, the existing radar vehicles can only accurately detect the obstacles in front and behind the vehicle, and the radar cannot accurately detec...

AI Technical Summary

Problems solved by technology

[0003] However, the existing radar vehicles can only accurately detect the obstacles in front and behind the vehicle, and the radar cannot accurately detect the obstacles on the side of the vehicle; for vehicles with higher configuration, multiple side radars are generally used for simultaneous positioning. This method increases the hardware cost of the vehicle, and there is still a large error in the positioning of obstacles; how to accurately locate obstacles on the side of the vehicle under the premise of reducing hardware cost investment has become a major problem

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