Automatic control method, device, and equipment for navigation image scale

Abstract

The invention is suitable for the navigating field, and provides an automatic control method, equipment and device of a navigating image scale. The method includes the following steps: pre-configuring parameter data adopted when navigation; judging the distance between a current position and an amplification point of a navigation object, sending a scale switching instruction when a scale switching threshold value is satisfied; calculating a switching frequency for a smooth scale during the scale change process; generating corresponding navigating images and storing the navigating images in a buffer area according to each scale under the scale switching frequency and during the scale switching process, image forming parameters under different scales and a local area of an electric map where the navigating images pass; and displaying the navigating images. starting from judging the distance between the present location and the amplified point of the navigating object, sending out scale switch instruction when the said distance meeting the scale switch threshold value, calculating the switch frequency of the scale based on the present time, navigating object speed, moving direction, and the said distance, generating parameters for different scales based on the each scales in the said frequency switch, with partial area of the electronic map went through by the navigating object to generate corresponding navigating image and displaying the said image. By using the invention, the navigation effect is more sufficient, accurate, and more convenient for the scale switch and navigation image generation, for the safety driving of the consumer.

Description

technical field [0001] The embodiments of the present invention belong to the field of navigation, and in particular relate to a method, device and equipment for controlling the scale of a navigation image. Background technique [0002] The Global Positioning System (GPS) uses navigation satellites for timing, positioning and ranging, and can provide all-weather, all-round and continuous real-time high-precision three-dimensional space and speed for users at sea, land and air all over the world. and time information. The system is mainly composed of three parts, namely the space part, the ground control part and the user device part. The space part is composed of 24 satellites, which are distributed in 6 track planes. The ground control part is composed of the main control station responsible for managing and coordinating the work of the entire ground control system, the ground antenna that injects the search message into the satellite under the control of the main control...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the embodiments of the present invention is to provide an automatic control method for the scale of the navigation image, which aims to solve the problem in the prior art that when the navigation image of the zoom-in point on the navigation path is zoomed in, there is a lack of surrounding facility information, and the user needs to manually switch.

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