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Passive acoustic detection positioning device for low-altitude unmanned plane

A detection device and UAV technology, which is applied in measurement devices, positioning, radio wave measurement systems, etc., can solve the problems of not involving UAV type identification processing, and the identification accuracy needs to be further improved, so as to improve strength and strengthen monitoring. Ability, high detection and positioning accuracy effect

Active Publication Date: 2018-04-06
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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Problems solved by technology

Different from the principle of active detection such as radar, the passive detection system does not emit signals, but receives the signals from the target to determine the parameters of the target. type recognition processing

Method used

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  • Passive acoustic detection positioning device for low-altitude unmanned plane
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  • Passive acoustic detection positioning device for low-altitude unmanned plane

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Embodiment Construction

[0024] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the implementation methods and accompanying drawings.

[0025] Due to the low flying altitude and speed of consumer drones and other targets, and the small radar cross-section, their detection capabilities will be greatly reduced. Under the influence of ground clutter and ground reflected wave interference, most radars basically lose the ability to accurately detect slow and small flying targets such as drones. The present invention is based on an acoustic detection device, by receiving radiated acoustic signals of slow and small flying targets such as drones, and using a compressed sensing signal processing method to estimate the direction of arrival (DOA) of the target, thereby judging the position of the target.

[0026] The system principle block diagram of the low-altitude unmanned aeri...

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Abstract

The invention discloses a passive acoustic detection positioning device for a low-altitude unmanned plane, and the device comprises an acoustic sensor array detection module, a multichannel data collection module, a signal preprocessing module, an Ethernet transmission module, an embedded processing module, a display and control module, and a voice alarm module. The acoustic sensor array detectionmodule is used for receiving an acoustic signal, and the multichannel data collection module is used for converting the collected acoustic signal into a digital signal. The signal preprocessing module is used for the filtering and denoising of the signal, and transmitting the processed signal to the embedded processing module through the Ethernet transmission module, so as to achieve the signal processing and upper computer information processing. The display and control module is used for displaying detection information and sending a related instruction to an alarm and countermeasure signal. The voice alarm module is used for the real-time voice broadcasting of the detection and positioning information. The device is high in detection and positioning precision, can achieve the real-timedetection and display of the positions, numbers and types of consumption-level slow and small flying objects invading an airspace, and improves the low-altitude early warning defense strength.

Description

technical field [0001] The invention relates to a device for detecting drones, in particular to a passive acoustic detection and positioning device for low-altitude drones. Background technique [0002] In recent years, due to the advantages of relatively low manufacturing cost, no risk of casualties, and convenient use of drones, the drone industry has developed rapidly, and has a wide range of applications in logistics, entertainment, search and rescue, etc. Generally, the flight altitude below 1km belongs to the low-altitude range, and my country has opened part of the low-altitude airspace below 1km. However, due to the immature laws and regulations related to this in our country and the lack of monitoring methods for drones, the problem of unlicensed drone flying in low-altitude open conditions has become an international social problem. On April 14, April 17, April 18, and April 21, 2017, the Chengdu area was disturbed by unmanned aerial vehicle activities, causing la...

Claims

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Application Information

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IPC IPC(8): G01S5/22
CPCG01S5/22
Inventor 陈敏徐利梅李学生谢晓梅黄强宋达高家葵刘韦伯覃涛
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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