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GPS kinematic velocity correction method

A movement speed, moving speed technology, applied in the field of GPS, can solve the problems of movement speed fluctuation and jitter, low data accuracy, etc., to achieve the effect of eliminating data errors

Inactive Publication Date: 2017-10-24
QINGDAO UNIV OF SCI & TECH
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the fluctuating and jittering movement speed caused by the low precision of GPS data existing in the prior art, the present invention proposes a GPS movement speed correction method, which is reasonable in design, overcomes the deficiencies of the prior art, and has a good effect

Method used

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  • GPS kinematic velocity correction method

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Embodiment Construction

[0022] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0023] A kind of correction method of GPS motion speed, its process is as follows figure 1 shown, including the following steps:

[0024] Step 1: Obtain GPS coordinate points;

[0025] Step 2: Calculate the straight-line distance between the GPS coordinate point and the previous point and add the total current moving distance GD;

[0026] Step 3: Obtain pedometer data;

[0027] Step 4: Calculate the total number SD of the straight-line distance between the pedometer data and the previous data;

[0028] Step 5: Determine whether the statistical period is timed out;

[0029] If: the judgment result is that the statistical period is overtime, calculate the GPS moving speed GV according to the statistical period and GD;

[0030] Or if the result of the judgment is that the statistical period does not time out, then go to step 1;

[0031] Step ...

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Abstract

The invention discloses a GPS kinematic velocity correction method, and belongs to the technical field of GPS. The GPS kinematic velocity correction method includes the steps: acquiring a GPS coordinate point; calculating the straight-line distance between the GPS coordinate point and the last point, and adding the straight-line distance into the current moving distance total GD; acquiring the data of a pedometer; calculating the straight-line distance total SD between the data of the pedometer and the last data; determining whether the statistic period is overtime; if being overtime, according to the statistic period and GD, calculating the GPS kinematic velocity GV; if not overtime, acquiring the GPS coordinate point; according to the statistic period and SD, calculating the kinematic velocity SV of the pedometer; determining whether the difference between the GPS kinematic velocity GV and the kinematic velocity SV of the pedometer is less than or equal to 4; if being less than or equal to 4, outputting the GPS kinematic velocity GV; if being greater than 4, outputting the kinematic velocity SV of the pedometer; and ending the correction. The GPS kinematic velocity correction method preferably solves the velocity fluctuating and jittering problem and eliminates the data error.

Description

technical field [0001] The invention belongs to the technical field of GPS, and in particular relates to a method for correcting GPS motion speed. Background technique [0002] Sports equipment is popular nowadays, especially electronic equipment such as sports watches, wristbands and the like. Most of these devices have motion speed calculation algorithms, which can provide movement speed during motion and facilitate users to track motion data. [0003] Most of the sports equipment is small in size, which makes the design of GPS antenna more difficult. The GPS performance of most sports equipment is not high, the star search is full, and the algorithm accuracy is poor. The statistical calculation of the speed of movement relies on GPS, which directly affects the accuracy and stability of the speed data. Actual tests show that when the accuracy of the GPS algorithm is lower than 15 meters, the calculated walking speed often fluctuates and jitters from 2 km / h to 11 km / h, wh...

Claims

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Application Information

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IPC IPC(8): G01S19/52G01S19/23G01C22/00
CPCG01C22/006G01S19/235G01S19/52
Inventor 徐文进
Owner QINGDAO UNIV OF SCI & TECH
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