Communication method for unmanned aerial vehicle visual formation coordination

Abstract

The invention provides a communication method for unmanned aerial vehicle visual formation coordination, which comprises the steps that aircraft GPS timing systems synchronously excite visual sensors to carry out image acquisition; a local WALSH sequence generator of each aircraft generates a spread spectrum sequence under excitation of the GPS timing systems, and spread spectrum processing is carried out on data frames formed by the aircraft position, the attitude and visual images; each wing aircraft modulates spread data to a predetermined frequency band and then transmits the data to a lead aircraft, wherein the transmitting time is synchronously triggered by the GPS timing systems; a multipath spread spectrum sequence tracking loop in the lead aircraft carries out de-spreading on the data frames so as to acquire the aircraft position, the attitude and the visual images transmitted by each aircraft; and then the lead aircraft can carry out three-dimensional reconstruction according to a usual method. The method provided by the invention can complete transmission and acquisition of visual images acquired by a plurality of unmanned aerial vehicles conveniently and effectively.

Description

technical field [0001] The invention relates to the technical field of UAV formation vision and communication, in particular to a communication method for UAV vision formation coordination. Background technique [0002] As an important aircraft, UAV is equipped with an optical imaging sensor to image the ground is a very important function. According to different designs, UAVs usually work at an altitude between 10 and 20,000 meters. Compared with other platforms, UAV platform imaging has the characteristics of high resolution, and can perform multiple imaging of the same target and scene to form multiple perspectives. , Multi-position imaging plays a very important role in military and civilian fields. Applications such as terrain mapping, urban building imaging, and environmental remote sensing based on UAV platforms all extract information directly through optical imaging. In wars such as the Gulf War, the Bosnian War, and the Kosovo War, the U.S. military’s drones have...

AI Technical Summary

Problems solved by technology

[0004] To use the existing communication system to complete the communication required for the visual coordination of UAV formations, either it is necessary to divide the communication time slots of each aircraft, which will lead to communication only in serial, and it is difficult to guarantee the real-time requirements of visual perception; Use different radio frequency systems, which will lead to a large number of radio frequency equipment on the long plane, which is difficult to implement in engineering; or a direct expansion system is required, which will lead to complex equipment, increased cost, and a large amount of aircraft load

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