Passive positioning and identification system for civil unmanned aerial vehicles

A civilian unmanned aerial vehicle, passive positioning technology, applied in the field of passive positioning and identification systems, can solve the problems of easy interference with radio equipment, high transmission power, weak radar echo, etc., and achieves good ability to detect low-altitude slow-speed small targets , reduce complexity and cost, and improve the effect of distance

Active Publication Date: 2018-02-09
芜湖华创光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Consumer drones fly at low altitudes, slow speeds, and small target reflection areas. Their radar echoes are not only weak, but also mixed with background clutter signals and are not easy to distinguish. Using conventional radars for detection is not effective; When the rad

Method used

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  • Passive positioning and identification system for civil unmanned aerial vehicles
  • Passive positioning and identification system for civil unmanned aerial vehicles
  • Passive positioning and identification system for civil unmanned aerial vehicles

Examples

Experimental program
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Example Embodiment

[0025] Implementation case one:

[0026] Passive radar uses an analog FM radio station as an external radiation source, and is mainly composed of three parts: a direct receiving signal receiving part, a target signal receiving part, and a signal processor. The direct signal receiving part is composed of a direct signal receiving antenna with good directivity and a frequency conversion receiver. The target signal receiving part is composed of an 8-unit array antenna and an 8-channel frequency conversion receiver. The signal processor is composed of 9-channel AD acquisition, digital down conversion and It is composed of high-speed digital signal processor. The direct signal and the target echo signal are received by the antenna and converted into a fixed intermediate frequency signal after being converted into a fixed intermediate frequency signal. After the quantization and acquisition are completed by the AD collection, they are converted into a digital baseband signal through di...

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Abstract

The present invention belongs to the aerial vehicle positioning, tracking and identification technical field and relates to a passive positioning and identification system for civil unmanned aerial vehicles. The system is composed of three parts, namely, a passive radar, a signal detection and receiving part and a fusion processing part. According to the passive positioning and identification system for the civil unmanned aerial vehicles of the present invention, the passive radar is adopted to detect and position an unmanned aerial vehicle at a low altitude and a low velocity; since the passive radar has a good capability of detecting small targets at low altitudes and low velocities, and therefore, a good unmanned aerial vehicle detection effect can be realized; since the characteristicsof different types of unmanned aerial vehicle remote control and telemetry signals have large differences, so that an unmanned aerial vehicle remote control and telemetry signal detection and receiving analysis method can be adopted to identify unmanned aerial vehicles; the passive radar is adopted to guide the system of remote control and telemetry signal detection and receiving, and therefore,a signal detection and receiving acting distance can be prolonged, and the complexity and cost of signal detection and receiving can be improved; and during work, the entire system does not need to radiate out signals, and therefore, the system is free of electromagnetic pollution and environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of positioning, tracking and identification of aerial vehicles, in particular to a passive positioning and identification system for civilian unmanned aerial vehicles. Background technique [0002] UAVs, especially civilian consumer UAVs, have developed rapidly in recent years. With the rapid development and popularization of civilian consumer drones, civilian drones, especially consumer drones, have gradually become a security risk. In countries around the world, consumer drones have invaded government departments and other important and sensitive Areas, disrupting the take-off and landing of civil aviation aircraft and causing large-scale aviation delays and other vicious events, the demand for detection and identification of drones is becoming more and more urgent. [0003] The existing detection, positioning and identification of drones mainly adopt the combination of radar and camera. The radar is resp...

Claims

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Application Information

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IPC IPC(8): G01S13/72G01S13/88
CPCG01S13/72G01S13/88
Inventor 吴双
Owner 芜湖华创光电科技有限公司
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