Passive positioning and identification system for civil unmanned aerial vehicles

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...

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 radar is working, its transmission power is relatively high, which is easy to interfere with other radio equipment in the same frequency band; using infrared or visible light cameras to take pictures to identify targets, the effect will be poor at night, in haze or in rainy days

Images