Time sensitivity target detection positioning method under airport space relation constraint

Abstract

The invention discloses a time sensitivity target detection positioning method under an airport space relation constraint. The time sensitivity target detection positioning method comprises the steps that front view image maps containing an airport area and airport buildings are chosen from satellite images, an airport reference image is generated according to the front view image maps, secondary landmark reference images in airport area are chosen in the airport reference image, and constraints of the time sensitivity target moving areas and time sensitivity resident areas are constructed in the secondary landmark reference images. Real-time images are obtained, perspective transformation is carried out on the secondary landmark reference images according to real-time imaging line numbers and real-time imaging column numbers of the real-time images and flying guarantee parameters of a moving platform, and the time sensitivity target moving areas and the time sensitivity resident areas after conversion are obtained. Resident targets in the time sensitivity resident areas are identified and positioned, and detection positioning is carried out on moving targets in the time sensitivity target moving areas. The time sensitivity target detection positioning method can resolve the technical problems that the target dimension changes in time sensitivity target detection, more interference exists under a ground background, and detection real-time performance is poor.

Description

technical field [0001] The invention belongs to the technical field of intersecting imaging automatic target recognition and navigation guidance, and more specifically relates to a time-sensitive target detection and positioning method under the constraint of airport space relationship. Background technique [0002] The time-sensitive target refers to that the position, attitude and other characteristics of the target are also changing when the time changes. This type of target can not only reside in buildings including airport shelters and aprons, but also stay in stations beside runways and highways, or move out of the station to move on roads and runways. Compared with a fixed target, it is not only difficult to identify in a complex background, but also its position is dynamically changing. Therefore, its detection, identification, and positioning problems are extremely challenging. [0003] Regardless of whether it is in the civilian field or the military field, the a...

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Problems solved by technology

[0007] Aiming at the above defects or improvement needs of the prior art, the present invention provides a time-sensitive target detection and positioning method under the constraints of the airport spatial relationship, the purpose of which is to solve the difficulty of detection caused by the scale change of the moving target under the existing moving platform conditions, and the ground background There are many technical problems of false alarms caused by interference and poor real-time performance of time-sensitive target detection.

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