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GPS trajectory optimization method and system

A trajectory optimization, GPS positioning technology, applied in the field of GPS trajectory positioning, can solve the problems of strong sense of broken lines, lack of curve optimization processing, not smooth enough, etc., to achieve the effect of accurate trajectory

Inactive Publication Date: 2018-05-08
台州市吉吉知识产权运营有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

By filtering out the drift points, each position point of the GPS track is accurate, but there is no further curve optimization processing. The track of the GPS position points is connected by a straight line, which has a strong sense of broken line and is not smooth enough.

Method used

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  • GPS trajectory optimization method and system
  • GPS trajectory optimization method and system
  • GPS trajectory optimization method and system

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] This embodiment provides a method for GPS trajectory optimization, such as figure 1 shown, including steps:

[0060] S11: Acquiring several location point information through GPS positioning;

[0061] S12: Traversing through the plurality of location point information, judging whether any location point matches the preset filter condition, if so, marking the location point and filtering it out;

[0062] S13: Perform curve optimization on the trajectory formed by the remaining position points after screening to generate a trajectory curve.

[0063] The GPS positioning accuracy and trajectory display of existing wearable devices are always rough and messy due to the existence of drift points or lost stars, and the accuracy is not high. This embodiment provides a method for GPS trajectory optimization. Through the algorithm Further optimize the GPS trajectory.

[0064] In this embodiment, step S11 is to obtain several location point information through GPS positioning.

...

Embodiment 2

[0075] This embodiment provides a method for GPS trajectory optimization, such as figure 2 shown, including steps:

[0076] S21: Acquiring several location point information through GPS positioning;

[0077] S22: Obtain the current time and two-dimensional coordinate value information of the location point, and mark the several location points according to the current time point and the two-dimensional coordinate value;

[0078] S23: Compare the two-dimensional coordinate values ​​of the plurality of position points with the preset coordinate values, and when they are consistent with the preset coordinate values, mark the position point as a lost star point, and filter out the position point;

[0079] S24: Calculate the distance between any adjacent position points, and when the distance is greater than the preset distance, mark the position point as a drift point and screen it out;

[0080] S25: Perform elliptic curve fitting under the least squares method on the trajector...

Embodiment 3

[0099] This embodiment provides a system for GPS trajectory optimization, such as image 3 shown, including:

[0100] Location point acquisition module 31: used to obtain some location point information through GPS positioning;

[0101] Screening module 32: for traversing the plurality of location point information, judging whether any location point matches the preset filter condition, if so, marking the location point and filtering it out;

[0102] Trajectory optimization module 33: for performing curve optimization on the trajectory formed by the remaining position points after screening to generate a trajectory curve.

[0103] In this embodiment, the location point obtaining module 31 is used to obtain several location point information through GPS positioning.

[0104] The GPS device will obtain the user's location points in real time according to the time interval or distance interval. Each location point includes at least date, time, longitude, latitude, altitude and ...

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Abstract

The invention provides a GPS trajectory optimization method and system. The method comprises steps: S1, information of a plurality of position points is acquired through GPS positioning; S2, the information of the plurality of position points is traversed, whether a position point exists to be matched with a preset screening condition is judged, and if yes, the position point is marked and screened out; and S3, a trajectory formed by remaining position points after screening out is subjected to curve optimization, and a trajectory curve is generated. Thus, an elliptic fitting algorithm under aleast square method is used to carry out curve optimization on the trajectory, the trajectory of the user can be displayed more clearly and obviously, and the user can acquire own historical trajectory information conveniently.

Description

technical field [0001] The invention relates to the technical field of GPS track positioning, in particular to a method and system for optimizing a GPS track. Background technique [0002] The GPS positioning accuracy and trajectory display of wearable devices have been researching hotspots and difficulties. Among them, in specific application scenarios, such as users running short distances (typically running around a 400-meter elliptical playground), the trajectory display is even more difficult. It is even more difficult. [0003] Generally, if the user performs a long-distance exercise, the trajectory display will be relatively long. Limited by the positioning accuracy of the GPS itself, the trajectory display will not be too rough and ugly when stretched. However, if the user is in the short-distance running lap mode, limited by the positioning accuracy of his own GPS, the positioning points captured by the device will appear very messy on the oval runway of the playgr...

Claims

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Application Information

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IPC IPC(8): G01S19/07
CPCG01S19/07
Inventor 陈文韬
Owner 台州市吉吉知识产权运营有限公司