Research On Passive Electrostatic Detection Method In Fuze Application

Passive electrostatic detection as a kind of strong concealment,distance of fuze is superior to traditional radio fuze of high efficiency,and low prices,has the very good development prospect of electrostatic detection method proposed in this paper the passive electrostatic detection,the principle is to detect the target electrostatic field through to get the target information,detection means is superior to the traditional electronic jamming technology and stealth technology but due to the traditional passive electrostatic detection method without considering the influence of electromagnetic interference and environmental interference,are still unable to achieve the high precision detection closeIn this paper,from the air electrostatic target characteristics and electrostatic detection principle,by way of electrostatic fuze scheme comparison and analysis,put forward the technical ways of concrete,and further the algorithm optimization,focusing on the passive electrostatic detection method considering environmental impact(electromagnetic interference charged clouds,etc.)at the time of the electrostatic fuze detection performance assessment,provide a reference for practical engineering application.First of all,this paper describes the target electrostatic characteristics from three aspects: the target electrification mechanism,the air target electrification characteristics and the quasi-static electric field approximation of the air target,and summarizes the traditional target electrostatic characteristics analysis methods,such as approximate analysis method,finite element numerical analysis method and integral equation numerical analysis method,so as to select the appropriate static electric field according to the specific scheme Electrical detection method.The analysis of electrostatic detection principle lays a foundation for the further development of the scheme.Secondly,this paper solves the induced charge distribution of the air target by the integral equation Moment Method(IE-MoM).Through the analysis of the distribution characteristics of the induced charge of the air target,it is found that the surface charge distribution of the aircraft is uneven,and the charge is mainly concentrated in the structure position of the aircraft tip,while the charge density is low in the position of the overall geometry of the aircraft which is a depression;then through the induction of the air target The space electric field distribution characteristics of the air target are obtained by the characteristics of the charge distribution.Again,in this paper,the electrostatic fuze scheme feasible method has carried on the induction and summary,and put forward on the basis of the research demonstration does not consider the clouds interference,disturbance of missile body and plate under the condition of electromagnetic interference,specific electrostatic detection scheme,followed by azimuth detection scheme,pitch detection and distance,make the electrostatic detection method has stronger practicability.Then,by using the integral equation-moment method algorithm,the electromagnetic interference between the plates is considered and the detection accuracy of the algorithm is evaluated.By adding the influence of projectile interference into the detection algorithm,the influence of the inductive electric field generated by the projectile itself on the detection accuracy is evaluated.In the end,is the key chapter of this article,first of all,based on the previous chapters considering electromagnetic interference between plate electrostatic detection scheme,by analyzing the characteristics of cloud of charged and used for simulating the charged clouds,and innovative in clouds interference resistance difference detection method is proposed,and through the "double polarity spherical shell model" and "single polarity square model to simulation of clouds interference,analyzes the difference detection method in solving the clouds and the calculation precision of object exists,and ordinary electrostatic detection method and the finite difference method in the presence of clouds or object exists,comparing the results of the detection accuracyIt improves the universality and engineering value of the detection method proposed in this paper.The work in this paper lays a foundation for the further application of passive electrostatic detection methods,and also provides a certain solution for the accurate detection of air-to-air passive electrostatic detection and fuze.