In the actual engineering applications, the loitering missile seeker has a larger velocity to height ratio (V/H), the sensor imaging scene changes quickly, and the flight environment is more complex, which poses a challenge to the end of the target tracking and guidance. Starting from the tracker algorithm itself and the tracking strategy of the seeker system to improve the performance of the tracking function in engineering applications. Based on the traditional Kernelized Correlation Filter (KCF), the image pyramid pooling idea is used to extract multi-dimensional data features, and the scale estimation is added to the KCF tracking algorithm.so as to improve its robustness to rotation and scale.Improve the tracking timing from the perspective of system management strategy, and optimize human-machine interaction. In order to verify the effectiveness of the method, this paper verifies the tracking performance of the seeker in both laboratory and outfield environments, comparing the tracking results with the traditional KCF on three sets of partial frames with obvious scale transformations, and evaluating the Overlap Precision(OP) and the Center Location Error (CLE), the CLE was reduced by 9.5% and the OP was increased by 34%. In the outfield flight, the tracking of moving and static targets in multi-scene and multi-morphology by the missile-mounted seeker was fully verified, which fully verified the change of target scale and the tracking reliability and accuracy under the extreme environment in the outfield.
The vibration environment of the internal opto-machinal system of the electro-optical pod is different from the external vibration environment and needs to be accurately defined. Based on the detailed analysis of the vibration source distribution and response bandwidth of the airborne electro-optical system, the Cassegrain Opto-mechanical System is taken as the research object, and the complete analysis process is established from the original environmental excitation. The equivalent vibration algorithm is used to determine the micro-vibration conditions. The finite element detail model of the connection method is used for dynamic response. At the same time, based on the simulation model optomechanical system, an optical axis drift analysis method based on feature point correlation and response extremum judgment is proposed. The relationship between the displacement mode and the amount of drift of the optical axis is obtained.
The precision of the laser-guided weapon is affected by the irradiation precision of the laser designator. In the past, the influence analysis of the irradiation precision is often analyzed based on the experience with several main influencing factors and improvement measures are usually considered. In this paper, the general model of the influence factors of the irradiation precision is established by using the system engineering method from the range of the laser-guided weapon strike link, and then the problem of the performance index decomposition based on the irradiation precision come down to decision problem. A semi - quantitative model of Fuzzy-AHP integrating the analytic hierarchy process(AHP) and the fuzzy comprehensive evaluation(FCE) is proposed, which can guide the index allocation of photoelectric platform according to the importance of influencing factors.
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