Unmanned aerial vehicle accurate landing method based on differential barometer

A technology of drones and barometers, applied in the field of drones, can solve problems such as large height errors, achieve high cost, good independence, and increase the effect of landing accuracy

Pending Publication Date: 2022-03-25
XIAN FUWODE OPTOELECTRONICS TECH
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The embodiment of the present application provides a precise landing method for UAVs based on differential barometers, which solves the problem of large height errors in the prior art when using single-point satellite navigation to land.

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  • Unmanned aerial vehicle accurate landing method based on differential barometer

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Embodiment Construction

[0023] 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 part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0024] In the description of the embodiments of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer " and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description,...

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Abstract

The invention discloses an unmanned aerial vehicle precise landing method based on a differential barometer, and the method comprises the following steps: starting ground base station equipment and an unmanned aerial vehicle, and enabling the ground base station equipment to collect air pressure data of a set time length at a first frequency; a reference value is calculated through a Kalman filtering algorithm according to the obtained multiple pieces of air pressure data; the ground base station equipment collects original air pressure data at a second frequency, and performs difference processing on the original air pressure data and the reference value to obtain a real-time difference value; the ground base station equipment sends the real-time difference value to the unmanned aerial vehicle through a wireless data transmission system, the unmanned aerial vehicle carries out difference value processing on the collected real-time air pressure value and the real-time difference value, and a real-time altitude value H of the unmanned aerial vehicle is obtained; and the unmanned aerial vehicle is guided to land autonomously through the real-time altitude value H. The problem that in the prior art, when a single-point satellite navigation mode is adopted for landing, the height error is large is solved.

Description

technical field [0001] The application belongs to the technical field of unmanned aerial vehicles, and in particular relates to a precise landing method for unmanned aerial vehicles based on a differential barometer. Background technique [0002] At present, when small UAVs land autonomously, they usually use single-point satellite navigation or differential satellite navigation to guide the fixed-wing landing, but both navigation methods have shortcomings. When the single-point satellite navigation method is used, there will be a certain height error when the UAV lands, which will lead to a heavy landing of the UAV or an early shutdown of the UAV. When using differential satellite navigation, it will increase the cost of the overall equipment, and at the same time, when the satellite navigation is interfered, there is a problem that it cannot land normally. Contents of the invention [0003] The embodiment of the present application provides a precise landing method for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D1/10
CPCG05D1/101
Inventor 陈元瀚李永高张鹏唐启凡
Owner XIAN FUWODE OPTOELECTRONICS TECH
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