Laser-based UAV recovery guidance system

Abstract

The invention relates to a laser-based UAV recovery guidance system comprising an onboard end and a ground end. The ground end includes PAT (Pointing, Acquisition, Tracking) control unit consisting ofa two-axis stable tracking turntable, a two-dimensional galvanometer, a range-finding laser emitting module, a range-finding laser receiving module, a guidance / communication laser emitting unit, a CCD camera, and an I / O interface, and a master control computer with an image processing and control function. The PAT control unit points to, acquires and tracks a UAV target. The onboard end includesa cooperative target formed by an angle reflector / indicator and a photoelectric detector. The angle reflector / indicator is configured to feed back a signal to the ground end. The photoelectric detector operates in a simplex mode for laser communication reception. The laser-based UAV recovery guidance system can reliably upload information, such as recovery guidance position, to a UAV without resort to radio communication, and has capabilities of position measurement and communication synchronous transmission, and can achieve autonomous and precise UAV recovery under the condition of satelliteand radio communication denial.

Description

technical field [0001] The invention relates to the technical field of laser applications, in particular to a laser-based unmanned aerial vehicle recovery and guidance system. Background technique [0002] At present, there have been some public reports and mature research results on UAV recovery and guidance measurement systems in foreign countries, generally including radar measurement, GPS and inertial device measurement, photoelectric measurement or their combination. Typical systems such as: [0003] Sierra Nevada of the United States developed the UCARS-V2 UAV tactical recovery system based on radar technology to solve the problems of low short-distance positioning accuracy, poor tracking performance and easy interference of the shipboard radar measurement system, but to improve radar measurement accuracy and Interference immunity is also more expensive. [0004] Raytheon Corporation of the United States adopted the JPALS (Joint Precise Approach and Landing System) sy...

AI Technical Summary

Problems solved by technology

The low cost of the system proves the feasibility of laser measurement and tracking technology for UAV guidance, but the system is only designed for landing on land and lacks the necessary means to suppress ship swaying. At the same time, the guidance information upload link is not laser communication link

[0006] At present, almost all communication methods of UAV guidance systems still rely on radio. Considering that the electromagnetic compatibility problems caused by the existing radar and radio frequency communication on ships are becoming more and more complicated, using traditional radio frequency methods to communicate with UAVs Communication will inevitably affect the reliability and real-time performance of data

[0007] In order to solve the problems of satellite denial and radio communication unavailability in the complex electromagnetic countermeasure environment, a ground-based medium The laser guidance system required for the landing / recovery guidance of small UAVs has extremely important practical significance

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