Full-strapdown image seeker target tracking method based on direct aiming template

Abstract

The invention discloses a full-strapdown image seeker target tracking method based on a direct aiming template, which corrects a target image by using the direct aiming template and inertial navigation information to enable the target image to be consistent with a view angle and a scale between target images acquired by a full-strapdown image seeker, and has the characteristic of high tracking precision. The target tracking range can be reduced by fusing inertial navigation information and image information target memory tracking methods, and the problems of translation invariance, scale invariance and rotation invariance are solved; interference of similar targets is filtered, and target tracking is processed under the conditions of non-linear maneuvering short-time field of view, shielding and the like of the targets; a hill-climbing search strategy is adopted and improved mutual information entropy is used as a similarity measurement function, so that the method has the advantages of small calculated amount and strong anti-interference capability, and the target tracking robustness can be improved.

Description

technical field [0001] The invention belongs to the field of image processing and machine vision, and relates to a target tracking method for an open-ground full strapdown image seeker, in particular to a real-time tracking method for direct aiming at a template to attack a stationary target on the ground, which is suitable for full strapdown image guidance The principle is also applicable to all imaging guided weapons. Background technique [0002] The instantaneous optical field of view of the all-strapdown image seeker is large, which makes the image signal noise and the calculation amount of image processing large; at the same time, its photodetector is fixedly connected to the reference seat, which is greatly disturbed by the carrier, and it is easy to There are phenomena such as target non-linear maneuvering out of the field of view, geometric deformation, and occlusion; its direct aiming template is generated by reconnaissance equipment such as the pod distributed ape...

AI Technical Summary

Problems solved by technology

[0003] In view of the above problems, the object of the present invention is to provide a target tracking method for a full strapdown image seeker based on a direct aiming template, which can solve the difference in viewing angle between the direct aiming template and the target map obtained by the full strapdown image seeker Real-time tracking of static targets on the ground under the conditions of , scale difference, large maneuvering, out of field of view and occlusion, etc., can realize the fast and accurate target position information provided by the strapdown image seeker, and provide support for the realization of precise target strike

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