The Research Of The Event-triggered Mechanism In The Networked Anti-aircraft Fire-control System

The developments of informationization and digitization result in the networked anti-aircraft fire-control system.It represents the important development direction of short-range anti-aircraft weapon system in the future.According to the current ground anti-aircraft forces'classification,i.e.,'company-battalion-brigade',the networked anti-aircraft fire-control system can be subdivided into the company-level anti-aircraft fire-control system,the battalion-level anti-aircraft fire-control system and the brigade-level anti-aircraft fire-control system.The communication system is an important guarantee facility of all the levels networked anti-aircraft fire-control systems.It takes the duty of the competent information interaction among the target detection units,the command and fire-control units and the weapon launch units.In the existing communication apparatus hardware condition,as the networking of the anti-aircraft fire-control system,the number of the nodes increases,the amount of the data transmission among nodes increases,the burden of the communication apparatus is aggravated,and the network congestion and the bandwidth constraint become serious.If we upgrade the communication apparatus hardware of the established projects,according to the national standards,we should retest the plateau test,the high and low temperature test and so on,and it greatly increases the time and economic costs.Therefore,without upgrading the communication apparatus hardware,how to design a new rule to manage the information interaction among nodes,has an important theoretical significance and application value of national defense.As one of the hot topics in academic research at home and abroad,the event-triggered mechanism has been studied a lot,and many valuable theoretical results have been achieved.According to the characteristics of the communication system of the anti-aircraft fire-control system of our country,we design different suitable event-triggered mechanism for each level anti-aircraft fire-control systems.The designed mechanisms should ensure the estimation accuracy of the fire-control system and ease the burden of the communication system.The research results of our paper include the following aspects.(1)Due to the higher demand of the estimation accuracy,the preposition of the detection unit and the enlarge of the detection scope,the number of the detection units of the company-level increases,the amount of the transmission data increases,the burden of the communication system is aggravated.Focused on this problem,without changing the existing communication hardware conditions,this paper proposes a corrected-gate event-triggered mechanism based on the innovation covariance to manage the information interaction between the detection units and the command fire-control units.This paper derives the corresponding estimation algorithm with the proposed mechanism.Simulation and analysis with the actual recorded data show that the proposed mechanism and the corresponding algorithm can ease the burden of the communication system,meanwhile ensure the performance of the command and fire-control units.(2)Focused on the problem of the heavy burden of the company-level communication system,this paper proposes a multi-channel decoupled event-triggered mechanism by designing a separate condition for each component of the measurement.Compared with the existing traditional multi-channel coupled event-triggered mechanism and the mechanism proposed in the previous section,the multi-channel decoupled event-triggered mechanism reduces the data transmission amount further.This paper derives the corresponding estimation algorithm with the proposed mechanism and proves the condition which guarantees the estimation error boundedness of the command fire-control unit.At last,the simulation and analysis with the actual recorded data show that the proposed mechanism can reduce the data transmission amount further,meanwhile ensure the performance of the command fire-control unit.(3)Due to the networking of the battalion-level anti-aircraft fire-control system,the transmission data amount increases,the existing communication mechanism would be unable to meet the actual operational requirement with the existing communication apparatus hardware.Therefore,an event-triggered information diffusion mechanism is proposed.According to whether the target motion model satisfies the linear model,we derive the target state estimation algorithm with the proposed mechanism separately.And the performances of these estimation algorithms are analyzed.At last,the simulation results with actual data show that the proposed mechanism and the corresponding estimation algorithm is effective and feasible in practical enginnering.(4)Focused on the problem of the state estimation of a brigade-level anti-aircraft fire-control system,several research results have been achieved.However,the existing algorithms require a lot of information communication,which aggravates the burden of the communication system.In addition,due to the interference of various factors,the target detection unit would have the missing measurement phenomena.Therefore,a missing measurement event-triggered information consensus mechanism is proposed to reduce the burden of the communication system,meanwhile ensure the estimation accuracy of the fire-control unit and the estimation difference among these fire-control units.The estimation algorithm with the proposed mechanism has been derived.And the condition which guarantee the estimation error boundedness has also been proved.At last,the simulation and its application to a brigade-level anti-aircraft fire-control system imply its effectiveness and feasibility in the practical engineering.