AR-HUD navigation system utilizing GPS data and navigation method

Abstract

The invention discloses an AR-HUD navigation system utilizing GPS data. By virtue of the system, Mars coordinates of GPS are converted into waypoints; a path planning curve is formed, and key nodes are acquired; the GPS is mapped onto the path planning curve to obtain a current location of a vehicle; the GPS vehicle location at every moment is calculated; the vehicle location at every moment is predicted according to the real-time vehicle speed information; the optimum vehicle location at each moment is obtained; when novel GPS positioning data is acquired, the current location of the vehicleis compared with the optimum vehicle location, when the difference is greater than a threshold value, the optimum vehicle location is reset and is enabled to be equal to the current location; the acquired location data is mapped onto the path planning curve to determine a path type and a distance to a next key node; and a result is outputted, and a navigation animation is generated. The inventionalso discloses an AR-HUD navigation method utilizing GPS data. By adopting the AR-HUD navigation system and method, the GPS error, the low refreshing frequency and the low real-time property are compensated and optimized, and the AR-HUD navigation system and method have continuity, high precision and high real-time property.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to an AR-HUD navigation system using GPS data. The invention also relates to an AR-HUD navigation method using GPS data. Background technique [0002] AR-HUD is an augmented reality head-up display system. The AR-HUD system needs to generate AR animations for navigation based on GPS real-time positioning data, and display them in the driver's visual area. The animations need to be in line with real road curves, directions, etc. Combined, it provides accurate driving direction guidance for the driver. [0003] Therefore, the AR-HUD system has high requirements on the real-time, continuity, and accuracy of signals. The traditional car navigation (GPS) mainly has the following major defects: [0004] 1. GPS data cannot directly give the completed planned route, but can only provide many discrete points; [0005] 2. These discrete points are the latitude and longitude coordinate values ​​...

AI Technical Summary

Problems solved by technology

[0004] 1. GPS data cannot directly give the completed planned route, but can only provide many discrete points;

[0005] 2. These discrete points are the latitude and longitude coordinate values ​​of Mars coordinates, which cannot be directly used in the production of spatial stereoscopic images;

[0006] 3. GPS cannot give distinguishing signals for going straight, turning, and turning around for each road section;

[0007] 4. GPS real-time positioning can only give the latitude and longitude coordinates of the vehicle at the current moment, and cannot be associated with the planned route;

[0008] 5. The vehicle position deviation of GPS positioning is relatively large. The current vehicle GPS system error is generally between 1 meter and 10 meters. Such errors will greatly weaken the accuracy and stability of navigation prompt animations;

[0009] 6. The update frequency of the GPS signal is low, and the update frequency of the GPS signal on the vehicle is generally about 1 time per second, which is far from meeting the real-time requirements for display animation. For the display system, the update frequency of the screen needs to be at least 20 times / second or more;

[0010] 7. Navigation will have various special scenarios, such as vehicle yaw, loss of GPS signal, etc. The existing AR-HUD system lacks navigation scenarios that can adapt to various special situations;

Images