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GPS-based altitude calculation method and system

A calculation method and altitude technology, which are applied in the field of GPS-based altitude calculation methods and systems, and can solve problems such as inability to obtain altitude data.

Inactive Publication Date: 2018-12-11
深圳第一蓝筹科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This makes outdoor sportsmen unable to obtain altitude data quickly and accurately through existing equipment

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  • GPS-based altitude calculation method and system

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Embodiment Construction

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0025] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terminology used in the description of the present invention in this specification is only for the purpose of describing specific embodiments, and is not used to limit the present invention. The term "and / or" used in this specification includes any and all combinations o...

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Abstract

The invention discloses a GPS-based altitude calculation method and system. The method comprises the following steps of starting positioning with GPS, acquiring data including altitude, air pressure and air temperature, and calculating an average altitude, an average air pressure and an average air temperature in a predetermined cycle as a reference altitude, a reference air pressure and a reference air temperature respectively; and acquiring the air pressure data and the air temperature data in real time in the movement process, calculating real-time altitude data by combining the acquired air pressure data and the acquired air temperature data with the reference altitude, and feeding back the real-time altitude data. The GPS-based altitude calculation system provided by the invention canrealize correction of the GPS altitude data; based on the method, an altitude data error can be controlled within 20 m, so that the GPS-based altitude data is more accurate, feedback of data of equipment, including sports watch and the like, applying the system is more precise, and the user experience is greatly improved.

Description

technical field [0001] The present invention relates to the technical field of positioning, in particular to a GPS-based altitude calculation method and system. Background technique [0002] At present, GPS has been used in a large number of fields, and the accuracy of GPS latitude and longitude data basically meets the needs of people's daily life. However, the altitude of GPS is very unreliable in actual use, such as walking around a flat road in a community circle (almost no altitude change), the altitude difference of GPS can even reach 200 meters. The air pressure data provided by the barometers on the market varies greatly depending on the brand. Even with a barometer with a relatively high accuracy, we cannot calculate altitude using only the barometer. Because the atmospheric pressure changes with the weather conditions, if there are typhoons and storms, the error will be relatively large. This makes it impossible for outdoor sportsmen to obtain altitude data quic...

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Application Information

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IPC IPC(8): G01C5/00G01C5/06
CPCG01C5/00G01C5/06
Inventor 付华强乔峤
Owner 深圳第一蓝筹科技有限公司