Research On Fire Control System Of Distributed Digital Traction Antiaircraft

Fire control system is an important component of the weapon system, and distributed fire control system is the main development structure of antiaircraft fire control system. As the fire control system from analog to digital transition, the distributional fire control system presents some new changes, new features and new problems. This dissertation comes from the general engineering practice for the anti-aircraft distributed fire control system after the digital transformation. Considering the main features of distributed digital tractive antiaircraft weapon system, this paper makes the detection capabilities of target tracking system as breakthrough point, and studies the antiaircraft firing system under complete measurements, incomplete measurements and complete lost measurements. The purpose of this paper is to reduce shoot-elements errors of traditional fire control system, increase hit probabilities of fire control system, and expand applicable scopes of existing system with a series of improvement methods. The proposed theories and technologies provide theoretical and methodological references for overall argumentation, design and experiment of small rapid-fire antiaircraft under the short-range air defense field.Firstly, considering incomplete measurements and stochastic-bias measurements, an estimation error low bound of stochastic-bias discrete-time observation system with incomplete measurement is presented in the sense of second-order error. Then, shoot-elements error statistical characteristic with incomplete and stochastic-bias measurements is calculated by the use of error non-linear transfer characteristics.Secondly, considering that antiaircraft firing system choice presently needs artificial support decision-making, a firing system automatic decision-making method based on C3I system is proposed to instantly and automatically choose firing system from tracking fire, blocking fire and emergency fire. The methodology can shorten system response time, lighten manual work intensity, and reduce manual decision-making risk.Thirdly, for studying digital fire control system tracking-fire hit probability with baseline amendment, this paper presents a hit probability model of traditional parallel shooting and baseline amendment shooting. The theory proves that the hit probability of baseline amendment firing system is close to the hit probability theoretical upper bound, and the hit probability of baseline amendment firing system is higher than the hit probability of traditional parallel firing system.Fourthly, considering some deficiencies in the existing blocking firing system, a new method of blocking fire based on federal structure is proposed. It can not only shorten system response time, but also to have good scalability and realizability. At the same time, the paper presents a new idea that it uses measurement variance from observation system or estimation variance from coordination center to decide the size of block barrage.Fifthly, for enhancing antiaircraft emergency firing performance without target distance, a new method based on uniform linear motion is proposed that sight line angular velocity information is used to solve fire equation. In addition, the paper exploringly proposed an anti-laser warning electro-optical tracking method.Finally, the above research results have been used in a number of engineering practices, and have achieved good outcomes.