Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Multi-rotor unmanned aerial vehicle identification method based on rotor micro Doppler characteristics

A multi-rotor unmanned aerial vehicle, Doppler characteristic technology, applied in radio wave measurement system, radio wave reflection/re-radiation, utilization of re-radiation, etc., can solve the problem of lack of identification of multi-rotor small UAV, and achieve The effect of quick recognition

Active Publication Date: 2017-09-15
成都电科智达科技有限公司
View PDF4 Cites 28 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] What the present invention aims to solve is to provide a multi-rotor unmanned aerial vehicle identification method based on rotor micro-Doppler characteristics to solve the problem of lack of identification for multi-rotor small unmanned aerial vehicles in the existing low-altitude airspace.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Multi-rotor unmanned aerial vehicle identification method based on rotor micro Doppler characteristics
  • Multi-rotor unmanned aerial vehicle identification method based on rotor micro Doppler characteristics
  • Multi-rotor unmanned aerial vehicle identification method based on rotor micro Doppler characteristics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] Below in conjunction with accompanying drawing, describe technical scheme of the present invention in detail:

[0038] The mathematical model adopted in the present invention is:

[0039] When the radar transmits a point frequency signal, the signal received by the radar is:

[0040]

[0041] where c represents the speed of light, f 0 Indicates the radar emission frequency point, if the pitch angle β and the height z of the rotor blade are not considered 0 ,have

[0042] Such as figure 1 As shown, R p (t) represents the distance from a point P on the rotor to the radar at time t, where R 0 Indicates the distance from the radar to the center of the rotor, l p Indicates the distance from point P to the center of the rotor, Indicates the initial angle of the blade, and Ω indicates the rotational angular velocity of the blade. If pitch angle β and rotor height z 0 is not 0, then The corresponding received demodulated baseband signal is:

[0043]

[0044...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of radar target identification and particularly relates to a multi-rotor unmanned aerial vehicle identification method based on rotor micro Doppler characteristics. According to the technical scheme of the invention, the multi-rotor unmanned aerial vehicle is detected mainly through a radar, micro Doppler characteristics of the rotor are extracted according to received multi-rotor unmanned aerial vehicle echo signals, parameters such as the rotor number of the target multi-rotor unmanned aerial vehicle, the rotation speed of the rotor and the blade length are acquired, and identification on the multi-rotor unmanned aerial vehicle is thus realized. The method has the beneficial effect of quickly identifying the multi-rotor unmanned aerial vehicle.

Description

technical field [0001] The invention belongs to the technical field of radar target recognition, and in particular relates to a multi-rotor unmanned aerial vehicle recognition method based on rotor micro-Doppler features. Background technique [0002] With the continuous maturity of drone technology and the sharp drop in the price of related products, various types of drones have been used in different fields. So while drones bring convenience to people, they have also become criminal tools in the hands of criminals. Due to the lack of regulatory control measures for drones, the phenomenon of drone abuse and illegal flying is becoming more and more serious. Facing the threat of such targets, there is no effective means of detection and identification at present. [0003] Today, multi-rotor small UAVs are not only easy to control, can take off and land vertically, and can easily hover in the air after takeoff, but also have the advantage of high serviceability, that is, whe...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01S13/88G01S7/41G01S7/40
CPCG01S7/4052G01S7/41G01S13/88
Inventor 曹宗杰
Owner 成都电科智达科技有限公司
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com