Study On Denotation Control Algorithmof Air Defense Missile Based On Guidance And Fuze Information Fusion

With the expanding scope of the air-raid-weapons types, combat airspace, speed and maneuverability, the fuze-warheadcoordination on air defense missile is facing new challenges. Guidance Integrated Fuze(GIF) technology is an important way to improve the efficiency of fuze-warheadcoordination, and it also provides a new development ideas forfuze-warhead system on air defense missile in future. In this paper, air defense missile equipped with directional warhead is considered as the research object. The study will focus on the information GIF technology applications in the detonation control algorithm, and it lay the theoretical and technical basis for this problem. The main work is as follows:(1) The encounter information obtained by the guidance and fuze system on the missile is analyzed, including types and accuracy and other characteristics. And it focused on the causes and calculation methods of guidance blind area. This study will provide a theoretical basis for subsequent data processing.(2) To solve the noise problem in information extracted by the seeker tracking system, an adaptive maneuvering target tracking algorithm based on three-dimensional parameter identification model is designed. And the simulation results show that the filtering algorithm converges well and has high precision, which can be adapted to different relative trajectory tracking. This study will provide precision guarantee for the calculation of the encounter parameters in the detonation algorithm.(3) Considering the target maneuver in guidance blind area may destruct the linear characteristic of target relative trajectory, it researches the theories and methods on trajectory extrapolation by using the tracking data outside blind area. And a fuze-warhead model based on "linear equivalent target relative trajectory” is put forward. Theoretical analysis and mathematical simulation show that the model is more realistic and has better precision than the traditional linear model. So this model can be used to calculate the optimal detonation control algorithm.(4) In the real encounter environment, the guidance system may not provide sufficient information or the fuze information is invalid. Therefore a GIF detonation control algorithm comprising a plurality of detonation models is designed. It could adaptively select the appropriate detonation model based on different information and calculate the optimal fusing delay time and azimuth angle. It is described in detail below:(1)When both guidance and fuze systems could provide adequate and effective information, the paper presents an optimal fusing delaytime algorithm which fuses guidance and fuze information. And simulation results show the algorithm’s precision is superior to the algorithm using only guidance information;(2)When the fuze system does not provide useful information, the detonation control algorithm will turn into a prediction algorithm for impact point, which is completely dependent on guidance information;(3)When the guidance system does not provide sufficient information, the paper proposes a delaytime look-up table based on the target distance information and Doppler frequency detected by the fuze system, and the delaytime table has been eatablished through a large number of simulation.