Based On The Coaxial Calculating Ship-borne Photoelectric Tracker Research

With the development of modern society,the progress of science and technology,the continuous renewal of electronic components,and constantly improve the photoelectric tracker design requirements,with high accuracy and strong anti-jamming ability to highlight the characteristics of the military electro-optical tracker become today one of the focus in the study of high-tech military equipment in the world.Around the problem of how to improve the tracking precision of photoelectric tracker system,the current study is more,such as acceleration lag compensation,feedforward control,the dynamic high type,etc.Is around of this paper is to maintain and improve the steady-state accuracy,on the basis of existing designs have a kind of effective algorithm so as to ensure the high precision of tracking systems for incoming missile tracking,further reduce the adjusting time and overshoot,the transient process of tracking more smoothly,so as to improve the performance of photoelectric tracking system.This paper first analyzes the three main factors influencing the tracking precision of photoelectric tracker: the impact of external disturbances,hardware design and software design,because of the complexity and hardware design of the external disturbance conditions the insurmountable bottleneck,therefore,to seek a breakthrough from the software design is an effective way.By summarizing the existing photoelectric tracking system of the common problems,and establish a mathematical model of centralized filtering algorithm commonly used(such as feedforward filter,least square filter calculation and alpha beta filter)the advantages and disadvantages are analyzed,which leads to a new coaxial algorithm,the core of the algorithm is to control system input tracking loop as the center axis,and through optimizing the center axis of the optimal algorithm,so as to improve the tracking accuracy.The concrete mentality is: design a calculation module,the calculation module is integrated several filter the input module for the unstable target roll angle and target elevation angle,the output is stable after the solution aimed at the roll angle and pitch angle of the target,as output the input of the tracking loop,complete tracking function,achieve the purpose of improving tracking accuracy.Secondly,this paper designs a kind of opto-electronic tracker based on coaxial solution,and from the aspects of structure design,hardware design and software design optimization.The structural design of the main mechanical properties for tracking and tracking a head to optimize the design,the structure of the vertical axis is advanced,the standard of angular contact ball bearings,rolling rotary transformer and roll drive motor installed and roll axis coaxial.The hardware design mainly through the core unit of optimal selection of photoelectric tracker,and the controller of servo control system and tracking servo control system optimization design,and then improve the photoelectric tracker data acquisition,image processing,information feedback,system response time ability.The main software in the servo control algorithm embedded photoelectric tracker coaxial solution of the system,establish a system simulation model,the tracking frequency response and tracking accuracy simulation of angular velocity,and the simulation of conventional photoelectric tracking results were compared,the results meet the objective of improving the precision.Finally,after a lot of data collection,information comparison,mathematical model,simulation of 3D model data,calculation,manufacture of a prototype,and use of equipment and testing on the ship,through the comparison of test data further confirmed the validity of the coaxial solution algorithm can improve the tracking accuracy of the.