Application of composite tracking strategy based on template matching and Harris corner detection in missile terminal guidance system

This paper discusses in detail the design and implementation of the terminal guidance system based on the composite tracking strategy of fusion template matching and Harris corner detection technology. Through the complementary advantages and deep integration of these two mature visual tracking methods, the aim is to improve the target recognition accuracy, tracking stability and anti-interference ability of the missile in the complex environment, so as to optimize the strike efficiency in the final guidance stage. Firstly, the basic principles of template matching and Harris corner detection are analyzed in detail. Then, the paper describes how to organically merge the two to form a compound tracking strategy. Specifically, template matching is used to quickly lock the approximate location of the target, and its keen ability to capture the significant features of the target is used to improve the success rate of first capture and the speed of tracking initialization. Then, Harris corner detection is introduced to extract and describe fine features of the target, and a robust set of target feature points is constructed to effectively deal with complex conditions such as target deformation, rotation and occlusion. On this basis, an adaptive weight allocation mechanism is designed to dynamically adjust the contribution of template matching and corner detection according to the complexity and SNR of the current tracking environment, so as to ensure the optimal tracking performance under various working conditions. In the experimental part, the performance of the proposed composite tracking strategy is evaluated comprehensively with the help of simulation software and actual flight test data. The results show that compared with the single template matching or corner detection methods, the fusion strategy has a significant improvement in target recognition rate, tracking accuracy, tracking stability and anti-interference ability. In summary, this paper proposes a composite tracking strategy that integrates template matching and Harris corner detection, and successfully applies it to the missile terminal guidance system to achieve effective target identification and stable tracking, and significantly improve the strike efficiency and environmental adaptability of the missile during the terminal guidance stage. It provides a new idea and practical reference for the development of missile precision guidance technology.