A navigation method for micro UAV based on passive radio frequency tags

Abstract

The invention discloses a navigation method for a miniature unmanned aerial vehicle based on a passive radio frequency tag, which belongs to the intersecting technical field of the Internet of Things technology and the miniature unmanned aerial vehicle technology. The passive radio frequency tag; the remote controller receives the wireless signal bounced by the passive radio frequency tag, and obtains the channel phase information and Doppler frequency shift between it and the passive radio frequency tag according to the wireless signal; the UAV according to the channel phase information and Doppler frequency shift to obtain the azimuth, distance and rotation angle to the remote controller; to fuse the inertial measurement data, azimuth, distance and rotation angle to obtain the estimated value of the motion state variable of the UAV; according to the motion state Variable estimates adjust the drone motion state. The present invention utilizes wireless signal processing technology without deploying costs, and can realize highly reliable navigation of micro drones in an outdoor space with a radius of tens of meters or an indoor space blocked by various obstacles.

Description

technical field [0001] The invention belongs to the intersection field of Internet of Things technology and micro-drone technology, and more specifically relates to a navigation method of a micro-drone based on a passive radio frequency tag. Background technique [0002] In the past decade, the rapid popularization of Micro Unmanned Aerial Vehicle (MAV) technology has demonstrated the great potential of Micro UAVs to replace humans in labor-intensive and even dangerous area survey and search missions. Specific applications include warehouse inventory management, fire rescue, etc. Specifically, using micro-drones to manage warehouse inventory could reduce inventory checks from a month to a day. Using micro-drones in firefighting for search and rescue could save firefighter lives: 53 percent of firefighter deaths in the U.S. in 2017 occurred inside burning buildings. These applications require tiny drones to navigate autonomously in a dimly lit warehouse or smoky building wh...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above deficiencies or improvement needs of the prior art, the present invention provides a navigation method for miniature drones based on passive radio frequency tags, the purpose of which is to solve the limitations of existing computer vision-based navigation methods in indoor environments Technical issues with not being able to work in dim, smoky environments with good lighting or rich textures

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