Two-dimension detection system and method for airport pavement foreign matter

Abstract

The invention discloses a two-dimension detection system for airport pavement foreign matter. The two-dimension detection system for the airport pavement foreign matter comprises a rotating table and radar, and is characterized by further comprising a radar arm with a length of at least 2 meters. The radar is fixed at one end of the radar arm, and the other end of the radar arm is fixed on the rotating table to enable the radar to rotate with the rotating table. The rotating table is used for bearing the radar to conduct rotation, a stepping angle of each rotation is alpha which is equal to or less than 0.2 degree and each angle stays for a time so that the radar can conveniently emit and receive a radar signal in the position of the angle. The radar adopts a stepped frequency system, radar center frequency adopts 16 gigahertz, signal bandwidth of the emitted signal is 3 gigahertz, and step frequency is 3 megahertz. When the radar rotates with the rotating table by a certain angle, an echo signal from a target area is obtained, then a filtering-back projection algorithm is utilized to dispose the collected total echo signals to obtain target two-dimension information. Due to the technical scheme, limit of a small area is overcome, and two-dimension imaging of a quiet object in the small area can be achieved.

Description

technical field [0001] The invention provides an airport runway management device, in particular a system and method for two-dimensional detection of foreign objects on an airport runway. Background technique [0002] Airport runway foreign object FOD (Foreign Object Debris) refers to some foreign material, debris or object that may damage the aircraft or system. The harm caused by FOD will damage the aircraft, take precious lives and bring huge economic losses. [0003] Among the existing FOD detection systems for foreign objects on airport runways, there are four widely used ones, namely the Tarsier system developed by the British Qinetiq company, the FODetect system developed by Israel, the FOD Finder system developed by the United States and the iFerret system developed by Singapore. Among them, the first three systems use millimeter-wave radar detection as the main method and video image recognition technology as a supplement to detect FOD; while the iFerret system only...

AI Technical Summary

Problems solved by technology

If you want to get the two-dimensional information of the FOD target, that is, the distance information and the orientation information can be obtained through the millimeter-wave radar, use figure 1 The radar of the structure shown is not able to realize

[0007] However, most of the existing and relatively mature two-dimensional imaging detection systems for static targets are airborne SAR and spaceborne SAR imaging. Using these two radars to detect two-dimensional targets on the runway is too expensive and the space is limited. , it is more difficult to realize

Therefore, it is difficult for existing systems and algorithms to obtain 2D images of FOD targets

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