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A Method for Automatically Extracting Key Points of Driving Route from Satellite Positioning Data

A driving route and automatic extraction technology, applied in satellite radio beacon positioning systems, radio wave measurement systems, instruments, etc., can solve problems such as occupation and large storage space, and achieve the effect of ensuring continuity and reducing data storage requirements.

Active Publication Date: 2021-09-28
CASCO SIGNAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Long-term recorded driving trajectories generally take up a lot of storage space, and there are a lot of repeated positioning data when the device is stationary

Method used

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  • A Method for Automatically Extracting Key Points of Driving Route from Satellite Positioning Data
  • A Method for Automatically Extracting Key Points of Driving Route from Satellite Positioning Data
  • A Method for Automatically Extracting Key Points of Driving Route from Satellite Positioning Data

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Embodiment Construction

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below, obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0035] Such as figure 1 and figure 2 Shown:

[0036] Step 1. Assume that there are 8 points in this section of the driving route, P1, P2...P8, then P1 is called the starting point O of the route, and P8 is called the end point T of the route. The total points of the line are Pcnt=8;

[0037] Step 2, set the parameters of the line calculation, for example, set the allowed maximum offset distance dMax=1 meter, and the allowed maximum separation distance Lmax=200 meters;

[0038] Step 3. Starting from the starting p...

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Abstract

The invention relates to a method for automatically extracting key points of a driving route from satellite positioning data, the method comprising the following steps: Step 1, collecting route data, installing a GNSS positioning receiver on a vehicle, driving the vehicle along a predetermined route, and receiving positioning The computer receives satellite signals and outputs positioning data, and stores these data; step 2, determine the starting point and end point of the line, and determine the content of the line data to be processed according to the starting point and end point; step 3, calculate the key points in the driving line, and connect them sequentially Each key point forms a broken line approximation of the driving route. Compared with the prior art, the present invention has the advantages of reducing storage capacity, accelerating viewing speed and the like.

Description

technical field [0001] The invention relates to the field of extracting key points from positioning data, in particular to a method for automatically extracting key points of driving routes from satellite positioning data. Background technique [0002] With the official launch of the Beidou satellite navigation system, satellite navigation and positioning services are becoming more and more popular. At present, the global navigation and positioning satellite system GNSS has four major systems: GPS, GLONASS, Beidou, and Galileo, as well as some regional navigation systems. The number of navigation satellites The increase and performance improvement make the satellite coverage wider, the navigation and positioning become more convenient, and the positioning accuracy is continuously improved, which further promotes the application of satellite navigation and positioning technology. At present, all kinds of ships, motor vehicles, airplanes and other means of transportation are e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/41
CPCG01S19/41
Inventor 崔洪州叶浩蒋耀东
Owner CASCO SIGNAL