Unmanned aerial vehicle autonomous landing system and landing method based on GPS and vision

Abstract

The invention relates to an unmanned aerial vehicle autonomous landing system and landing method based on GPS and vision. The method comprises the steps: enabling an unmanned aerial vehicle to receivea one-key return instruction in a normal flight process, enabling the unmanned aerial vehicle to maintain a normal flight height, starting to fly to a first landing position right above a landing point, and employing a GPS positioning system in the process; after the unmanned aerial vehicle arrives at the first-section landing position, the unmanned aerial vehicle starts to descend to a second-section landing position 5 m away from the position over the target at the vertical speed of 5 m / s, and a GPS is adopted in the process; after the unmanned aerial vehicle reaches the second-section landing position, the unmanned aerial vehicle starts to descend to the ground at the vertical speed of 1 m / s, and a visual positioning system is adopted in the process; and after the unmanned aerial vehicle reaches the ground, the unmanned aerial vehicle blades stop rotating. According to the unmanned aerial vehicle autonomous landing system, a GPS and visual positioning method is adopted, and the landing precision of the unmanned aerial vehicle is improved to the maximum extent.

Description

technical field [0001] The invention relates to the technical field of unmanned aerial vehicles, in particular to a GPS and vision-based unmanned aerial vehicle landing system and method. Background technique [0002] In recent years, UAV technology has developed rapidly. Due to the characteristics of UAVs such as flexibility, portability, low cost and high efficiency, UAVs have a large space for development in fields such as agricultural plant protection, power inspection, and terrain detection. At present, UAV technology already has the function of autonomous flight, and can also realize autonomous landing, but the autonomous landing system is a GPS-based UAV autonomous landing system, which still has the disadvantages of insufficient landing accuracy and insufficient landing safety. . Contents of the invention [0003] In order to solve the problems in the prior art, the present invention provides a GPS and vision-based autonomous landing system and landing method for ...

AI Technical Summary

Problems solved by technology

At present, UAV technology already has the function of autonomous flight, and can also realize autonomous landing, but the autonomous landing system is a GPS-based UAV autonomous landing system, which still has the disadvantages of insufficient landing accuracy and insufficient landing safety.

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