Pressure height measurement method based on GPS (global positioning system) correction

A measurement method and barometric altitude technology, applied in the direction of altitude/horizontal measurement, measuring device, radio wave measurement system, etc., can solve the problems of unavailable sensors, slow update of measurement data, jumping of altitude measurement value, etc., to reduce errors, High reliability, avoid jump effect

Active Publication Date: 2019-03-01
航天时代飞鸿技术有限公司 +1
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Problems solved by technology

This method has high measurement accuracy, but due to its own positioning principle, it has problems such as slow update of measurement data, and the sensor is easily blocked by obstacles, which makes the sensor unusable. Moreover, when the satellite receiving condition is not good, the height measurement value is prone to jump. Change the problem
[0005] At present, the fusion correction of barometric altitude sensor and GPS altitude

Method used

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  • Pressure height measurement method based on GPS (global positioning system) correction
  • Pressure height measurement method based on GPS (global positioning system) correction
  • Pressure height measurement method based on GPS (global positioning system) correction

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Embodiment Construction

[0031] Specific embodiments of the present invention will be described in detail below in conjunction with specific drawings. It should be noted that the technical features or combinations of technical features described in the following embodiments should not be considered isolated, and they can be combined with each other to achieve better technical effects. In the drawings of the following embodiments, the same reference numerals appearing in each drawing represent the same features or components, which can be applied in different embodiments.

[0032] Measuring principle of the present invention is as follows:

[0033] Ideal gas state equation PV = nRT

[0034] In the above formula: P is the pressure of ideal gas, V is the volume of ideal gas, n represents the amount of gas substance, T represents the thermodynamic temperature of ideal gas, R is the ideal gas constant

[0035] Will Substitute into the above formula to get

[0036] In the formula: m: gas mass; M: gas...

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Abstract

The invention relates to the technical field of sensor optimization correction, and provides a pressure height measurement method based on GPS (global positioning system) correction. The method includes the steps: regularly acquiring current GPS relative height values and pressure values of an unmanned aerial vehicle; fitting a function of the pressure and the relative height by a least square method; acquiring a corrected current height value by reading a pressure value. The invention further provides a computer program with the method, an information processing terminal and a computer readable storage medium. The method is universally applicable to a height measurement system of the unmanned aerial vehicle and particularly applicable to a small unmanned aerial vehicle platform which is inconveniently provided with a large sensor, the method is effective and has important practical significance for measurement of the height of the unmanned aerial vehicle, wide application prospects and a certain guide effect on development of a new height measurement method.

Description

technical field [0001] The invention relates to the technical field of sensor optimization correction, in particular to a method for measuring barometric altitude based on GPS correction. Background technique [0002] During the flight process of UAV, the collection of height data is very important, especially in the process of take-off and landing, the measurement of height data is closely related to flight safety. At present, the means of altitude measurement for small UAVs are mainly barometric altitude sensors and GPS altitude sensors. [0003] As a sensor that uses changes in air pressure to measure altitude, it is not affected by obstacles during the measurement process. It has a wide range of measurement altitude and is easy to move. It can measure absolute altitude and relative altitude. However, it can be measured by air pressure and The error of calculating the height by temperature is relatively large, especially when measuring near the ground, the accuracy of th...

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Application Information

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IPC IPC(8): G01C5/06G01S19/14
CPCG01C5/005G01C5/06G01S19/14
Inventor 王子豪樊鹏辉韩松杨红喜卢月亮杨超峰
Owner 航天时代飞鸿技术有限公司
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