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Method for searching and detecting unmanned aerial vehicle

A drone and radar technology, applied in the field of search and detection of drones, can solve the problems of visible light/infrared detection difficulties, low infrared radiation and characteristics, shortened detection distance, etc., to suppress violations of laws and regulations, easy to distinguish, highly feasible effect

Pending Publication Date: 2019-05-03
福建星图智控科技有限公司
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AI Technical Summary

Problems solved by technology

However, due to the small size and low infrared radiation and characteristics of UAVs, the detection distance through infrared detection is greatly shortened. In terms of anti-laser detection, it is easier for UAVs to adopt materials such as wave absorbing, transmission, and light guide to reduce the Laser reflection and shape stealth design, etc., make visible light / infrared detection more difficult

Method used

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  • Method for searching and detecting unmanned aerial vehicle
  • Method for searching and detecting unmanned aerial vehicle
  • Method for searching and detecting unmanned aerial vehicle

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Experimental program
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Embodiment

[0037] The lift of the multi-rotor drone mainly comes from the high-speed rotation of the rotor blades to press down the air and use the force of the resulting downwash airflow. Therefore, the multi-rotor drone is moving or hovering. The vortex produced by the high-speed rotation of the blade.

[0038] The vortex produced by the rotor of the multi-rotor UAV or the wake generated by the body of the fixed-wing UAV can scatter irregular radar beams due to the varying degrees of atmospheric refraction index changes. Irregular changes in atmospheric refraction can produce irregular radar echoes, and the irregular changes in atmospheric refraction are caused by irregular changes in temperature, humidity and density of the airflow (high-speed flow of airflow inside the vortex or wake).

[0039] The vortex or wake flows with the high-speed airflow generated by the UAV when it is working in the air. The same beam emitted by the ground-launched radar (transmitting radar module) reaches ...

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Abstract

The invention provides a method for searching and detecting an unmanned aerial vehicle. The method is used for searching and detecting the unmanned aerial vehicle in a specified airspace. The method comprises a transmitting radar module, a receiving radar module and an analysis module connected with the receiving radar module. The analysis module stores unmanned aerial vehicle airflow disturbancecharacteristic data of the flying unmanned aerial vehicle. The transmitting radar is used to transmit a probe radar wave to the specified airspace. The analysis module acquires a radar reflected beamof the specified airspace through the receiving radar module and analyzes the airflow status data of the specified airspace from the reflected beam. When the airflow status data contain data matchingthe unmanned aerial vehicle airflow disturbance characteristic data, the flying unmanned aerial vehicle is might be in the specified airspace. The method provided by the invention can make up for thedefects of traditional unmanned aerial vehicle search, and accurately search and detect the flying unmanned aerial vehicle in the specified airspace.

Description

technical field [0001] The invention relates to the technical field of radar detection, in particular to a method for searching and detecting drones. Background technique [0002] Since my country gradually opened up the low-altitude airspace below 1,000 meters, there have been more and more "low, slow, and small" aircraft such as drones, model airplanes, hot air balloons, and Kongming lanterns. This is an opportunity to take advantage of, and all kinds of illegal flights have caused serious safety hazards to important activities and key areas. In particular, the "black flight" that has been frequently reported recently has caused many flights to evade urgently, seriously disrupting the normal flight, take-off and landing of the flight. At the same time, it is not ruled out that individual criminals may use drones to do illegal activities or terrorist activities. Drones can carry cameras, and can also transport explosives and other items. Drones create conditions for spying...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/88G01S13/50
Inventor 刘荣山
Owner 福建星图智控科技有限公司
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