The differential game models for submarine torpedo attack occupy position plan analysis and optimization have been provided,that using the shadow target to simply the problem description and the thoeroy derivation,the conclusion that the best strategy for submarine to escape with given velocity is linear motion.The conditions that submarine can occupy the attack position has been worked out using qualitative differential game theories and methods.The plan optimization model and the optimal plan calculate formula for the case that submarine can occupy attack position have been proposed by the aid of the optimal control theories and methods.The calculation results of the optimal occupy position plan have been verified by simulation.
As the improvement of the helicopter equidistant to and fro patrol method with dipping sonar,the single line equidistant rotate patrol method has been proposed.The optimize model use effective blockade width as performance indivatior has been bulit.The comparison between the calculation result of the optical equidistant to and fro patrol plan and the optical single line equidistant rotate patrol plan have been worked out.
As the improvement of the helicopter equidistant to and fro patrol method with dipping sonar,the single line equidistant rotate patrol method has been proposed.The optimize model use effective blockade width as performance indivatior has been bulit.The comparison between the calculation result of the optical equidistant to and fro patrol plan and the optical single line equidistant rotate patrol plan have been worked out.
In order to cultivate innovative high-quality military personnel,the professional education reform of military academies should take into consideration the professional education system of many factors,from education concept,teaching mode,teaching methods and examination methods,it put forward concrete measures of teaching reform,to stimulate students' creative thinking,cultivating students innovation research ability,so as to promote the development of Vocational education.
The probability model of anti-submarine helicopter with dipping sonar on spiral search pattern is established.The probability model is validated by Monte Carlo method and it is applied to analyse the best interval of detecting sites.The fitting function of the best dipping coefficient at interval versus seaching range of sonar is calculated.It provides a reference to the tactical application when helicopter carries anti-submarine task with dipping sonar on spiral search pattern.
In order to improve the shooting probability of acoustic homing torpedo during the course of pursuing its target,it analyses the pursuit-guidance trajectory and studies its properties by the method of numerical value analysis,which is based on the equations of relative movements between torpedo and target.As a result,it obtains the minimum value of the radius of curvature for the pursuit-guidance trajectory.By comparing the minimum value of the radius of curvature with gyre radius,it is used to judge whether the torpedo sever itself from theory track.So,it is used to provide an appropriate shooting projects for the users who will choose the right fire position by the various conditions,also,it has an important significance for the designer to designing torpedo.
Based on the analysis of relative bearings error range in the scope of acoustic homing torpedo,the optimization model is established according to the definition of optimized lead angle.In addition,the capture probability of acoustic homing torpedo is simulant calculated.The simulation results show that the numerical solution of the optimization model is correct.
高等数学是学历教育士官各专业学员必修的一门基础课。针对士官学员的特点,从培养目标和高等数学的教学目的出发,结合自己多年的教学实践,对教学过程的优化提出几点做法。
The hit probability analytic expressions of straight-running torpedo is established in considering measured error.In addition,this paper provides the analytic expression to draw the equal probability position diagrams and the expressions to calculate the farthest target position in definite probability.It provides a theoretic reference in the warfare use of torpedo.
The risk assessment method for maritime salvage engineering is discussed.In addition,this paper analyses the cost and approach on enhancing safety of maritime salvage.
The hit probability model of straight straight-running torpedo is established in considering measured error.In addition,this paper simulates and analyses the impact of target distance and shipboard angles on the probability of hitting the target.It provides a reference for torpedo warfare research.
This paper demonstrates the probability model of antisubmarine helicopter radar in searching submarine,and gives the applicable conditions of the model.
The definition of k-dominating fuzzy matrices has been introduced. The relation between k-dominating fuzzy matrices and circularly k-dominating fuzzy matrices is discussed. We point out that the convergence or oscillating index of the power sequence of an n × n k-dominating matrix is bounded by (n-1)k+m from above; and if it is oscillating, then the period index is a factor of k.
The properties of strongly k-transitive fuzzy matrices are investigated. The relation between strongly k-transitive fuzzy matrices and strongly transitive fuzzy matrices is discussed. We point out that strongly transitivity and quasitransitivity are equivalent.
The properties and graph character of k-general transitive fuzzy matrix have been studied. The equivalent of acyclicity and controllable matrix is proved. The transitive property and graph character of controllable matrix are obtained.
