中国科技核心期刊
中国指挥与控制学会会刊
军事装备类重点期刊
中国指挥与控制学会会刊
军事装备类重点期刊
中国指挥与控制学会会刊
军事装备类重点期刊
The targets which found by mine detection sonar while searching sea bed are large quantity and can't be found again easily. The current measures are difficult to classify the mines from the sonar targets. Now a new method has been developed to do this efficiently, which based on the difference between the targets' detecting probabilities acquired from multiple searches. The method has been approved effective when it applies on some practical examples. The results express that a large percentage of lower probability targets are rejected, the numbers of reserved targets are reduced obviously and the comprehensive effectiveness of the mine-detection sonar is raised remarkably.
In order to clarify and confirm the contractual and functional requirement of the weapon systems, this article proposed a requirement specifies method of weapon systems for the ConOps (Concept of Operations) based on OPM (Object-Process Methodology). The method established the ConOps of threat-oriented weapon system, and stepwise refine the system object and detailed configuration of the requirement by OPM. Then the article also implement V & V (verification and validation) to the OPM model by the simulation and execution progress. The method significantly ensures the correctness and consistency of requirement specifications. At last, the article will show a case of UAV-based anti-missile defense system to demonstrate the effectiveness of this method.
Millimeter wave technology can improve radar angle tracking accuracy and performance, which solve the sea clutter jamming problem under multipath and low-angle condition. For interception of supersonic anti-ship missile, feasibility analysis of radar distance index requirement is given. According to the radar equation, computer simulations on the atmospheric attenuation, rain attenuation and different relative humility and fog visibility. To avoiding the meteorological influences and maximizing the low-angle tracking dominance, apply cm+mm architecture which provide technologies for shipborne 3mm tracking radar fire control system.
In order to solve the problem of force combat demand, we can describe the performance characteristics of the airborne weapon system, and describe the influence of the change of the armed forces with different combat missions on the combat results. Build the model of helicopter formation force demand calculation, combined with operational requirements, the solution of the optimal armed groups and mount programs. The results of case verification show that the model is efficient and credible, and can provide scientific theoretical basis for the prediction of formation force attack.
Aiming at the shortcomings of the traditional warship formation air defense threat assessment method only considering the target of the specific time, and in consideration of the important role of the decision makers’ preference information in the target threat, a kind of warship formation air defense threat method based on dynamic intuitionistic fuzzy group decision assessment is proposed. Firstly, a dynamic intuitionistic fuzzy multiple attribute group decision matrix is established. Secondly, the weights of the decision maker, the weight of the time series and the weight of each index are obtained by using trust function, intuitionistic fuzzy entropy and normal distribution method respectively,which makes weight more objectively; Then, by introducing the intuitionistic fuzzy cross entropy theory, an improved VIKOR method is proposed. This method takes full account of the influence of each factor of IFMADM matrix on the evaluation results, which makes the incoming target on the warship formation threat level more reasonable. Finally, the simulation results show that the proposed method is effective.
As there is a disadvantage that the decoy can't get the current situation of confrontation when it moves to the target, and the decoy can't choose the best trajectory by itself, we present a kind of confrontation trajectory model of mobile acoustic decoy which is equipped with function of passive tracking. Through analyzing the relative speed of decoy, we classify the confrontation situation. According to the principle of the longest distance of tricking, we establish the best model of trajectory based on the maneuvering opportunity and angle. Using Matlab to simulate and acquiring the best method to use decoy in different condition. It proves that this method can confront the torpedo effectively and enhance the survive rate of submarine.
This paper introduces the sum-up of foreign Anti-torpedo weapon system researching, analyzes the development trend of Anti-torpedo weapon system, presents a new type of Anti-torpedo weapon system framework, and discusses the key technologies and the combat using method of the system. The simulation results show that the soft-kill and hard-kill weapons integrated interception torpedo can effectively improve the survivability of the surface ship.
For the dynamic tracking problem of the multi-agent formation with time delay, a model-independent control algorithm is proposed, and all followers can track a dynamic leader practically in a directed graph of time delay based on the practical stability theory, graph theory and matrix analysis. 3-DOF UUV as numerical simulations can prove the correctness of the algorithms based on the LMI toolbox of Matlab.
Aiming at the deficiency of traditional fire planning method,this paper introduces the fire planning method based on double contract mechanism,it solves "target-weapon" matching problem in network centric warfare, it also has the advantages of quick weapon response, flexible resource allocation etc. This article introduces the specific steps and the key mathematical model of this method, applies the method to network centric warfare of fire planning, illustrates the effectiveness of this method by simulation. Finally, this article illustrates the prospect of this method in future military field, and brings up recommendations for further improvement.
Passive coherent radar have significant advantages in anti-stealth and anti-jamming, so it is difficult to carry out active jamming against it. The approaches to determine the radar’s deployment area were given in this paper through analyzing the technical and tactical characteristics of passive coherent radar. And then the feasibility of performing noise jamming and deception jamming on passive radar were discussed. Finally, the interference effect that noise stand-off jamming against the procedure of radar signal processing was analyzed by simulation based on actual radar data. The results showed that exploiting noise stand-off jamming against passive radar show a feasibility in tactics and technology.
The decision-making method is studied for high-intensity UAV air combat in this paper. The present research progress of the UAV air combat decision method is analyzed. And the main reasons that influence the applicability of the decision method are summarized. For real-time, fault-tolerance, and not relying accurate mathematical model of aircraft requirements, a decision-making model based on DBN is proposed for one-to-one UAV air combat. By synthetically analyzing the information that can be obtained from the airborne sensors and intelligence, the situational factors affecting UAV's maneuver decisions are extracted and the DBN topology structure is constructed. The design ideas of the directed-arc conditional probability table and decision node state transition probability table of the network model are illustrated. The forward recursive reasoning algorithm for decision-making network model is designed and the algorithm complexity is analyzed. The analysis result indicates that the time and special complexity of the algorithm is acceptable, which could satisfy the requirement of engineering application. Finally, the simulation results verify the practicability of the decision network, and prove the convergence, real-time performance of the reasoning algorithm, the adaptability of network model. The results indicate that Air combat decision model improving the flexibility and validity of the UAV's maneuver decision.
In order to provide decision support for on-call submarine by anti-submarine patrol aircraft, in this paper, based on the known submarine general course and general position coordinates, taking advantage of the multistatic sonar, kind of anti-submarine patrol aircraft on-call searching model is set up, using acoustic attention principle, through Matlab, the influence of the initial distance, initial position of the submarine, submarine speed, submarine general course, submarine course distribution, dropping distance and dropping number on searching submarine efficiency is analyzed. The results shows that, searching submarine efficiency of three methods decreasing with the increase of the initial distance, initial position of the submarine, submarine speed, submarine general course. Under the same condition, searching submarine efficiency of arc multistatic sonar array is the best, and it can choose the appropriate dropping distance and dropping number according to the actual situation. This method is suitable for anti-submarine patrol aircraft on-call anti-submarine and has some significance on anti-submarine warfare.
According to submarine tracking problem of the anti-submarine patrol aircraft using passive omni-directional sonobuoy, this paper discusses the layout of sonobuoy for tracking submarine, studies the method of sonobuoy for tracking submarine, analyses the whole process of tracking submarine for anti-submarine patrol aircraft using sonobuoys, takes the simulation analysis for tracking index, gives out the result as the chart or table, provides the reference for the research of tracking submarine for anti-submarine patrol aircraft.
According to the working principle and operational characteristics of portable communication countermeasure equipment in EW,this paper improves traditional WSEIAC Model, establishes the operational effectiveness evaluation index system through the method of system analysis, and proposes a mathematical model and research method. Thus quantitative evaluation of operational effectiveness of portable communication countermeasure equipment is realized,and this study provides reference for the research of related field.
Utilizing the calculation method of probability network time parameters, we construct the Grouping application efficiency evaluation model of the engineering broken barrier equipment. The given obstacles and breaching time conditions the probability of different equipment Grouping application breaking avoidance task is calculated with the example analysis. The model can provide a theoretical support for the optimization of the grouping application plan of engineering equipment.
One of the most important factors that affect the real-time performance and fidelity of flight simulation system is to solve the aerodynamic derivatives of the force and torque module. As the input of the simulation model, the accuracy and efficiency of the calculation of aerodynamic derivatives will affect the success or failure of the simulation system to a great extent. In flight simulation, the commonly used interpolation algorithms are linear interpolation, Lagrange interpolation, Newton interpolation, three spline interpolation. In this paper the four kinds of interpolation algorithm, firstly analyzed from the mathematical principle, and dynamic data according to a set of raw gas obtained by wind tunnel experiment, compares the interpolation by MATLAB, further from four kinds of algorithm, the accuracy of comparative analysis, finally summed up the characteristics of four algorithms.
To satisfy the highest efficiency or missile weapon, system is selected from a plurality of missile weapon system, the first use of multi-level extension superiority evaluation method proposed in the study, starting from the multi-level evaluation of missile weapon system effectiveness, comprehensive evaluation of missile weapon system effectiveness. By introducing the correlation function, characterization of missile weapon system effectiveness evaluation index to meet the requirements of the degree of correlation calculation and standard correlation, calculate the goodness and goodness of missile weapon system effectiveness evaluation at all levels, can help decision-makers choose the efficiency optimization value of missile weapon system most provide a new way.
Focusing on the need of modeling for command information flow, to meet the construction of model framework for command information flow simulation for the purpose, ideas and methods of component-based modeling, hierarchical design and modular assembly design based on a flexible and scalable simulation model integration framework, a detailed description of the core components of the function and structure for the command and control component, heavy task module, knowledge base, perception component and communication manager, the framework for the realization of independent management and integrated operation simulation engine and the simulation model, which satisfies the application requirements for simulation of command information flow.
Aimming at the response processes analyses of space information demands in joint operations, this paper analyses the composition and operation mode of space information demands response system, describes the method to judge whether space information demand is satisfied, analyses the response processes, designs the simulation method and verified it by a case analysis and simulation.
With information warfare booming, an innovative fighting method called SoS(System of system) attacking is brought forward. Combat experiment could done more favor to further understanding fighting method than logic concept analysis. So this article perform a series of experiment to validate the fighting method. firstly, operational mechanism of SOS combat is analyzed from the network perspective. Secondly, combining the network parameter with the connotation of SoS combat, this research proposes several quantity descriptions and arithmetic formats of SoS combat methods. Then, models is devised and employed in a C2 testing platform, by which, some experiments are conducted, and import conclusions are drawn by analyzing output data and demonstrated situation. This work promotes the practical application of the combat method of SOS attacking. It has significant theoretic meaning and practical value to advance military transformation and dominate in future war.
This paper presents a representation method of electromagnetic environment visualization in battlefield, specifically it characterizes the overall radiation energy distribution of radar, electronic warfare, navigation, communications and other electronic equipment. It can respond to the current time,the specified frequency of different geographical locaitons, different levels of electromagnetic energy of the whole airspace.
To evaluate camouflage effect of the camouflaged military targets, we usually base on the changes of image characteristics before and after for camouflage target. Because of the influence of illumination environment led to the decrease of the image quality, it can produce adverse effect on the image feature and affect the camouflage effect evaluation. A method of Image texture feature extraction which combination of local binary pattern (LBP) and gray level co-occurrence matrix is proposed in this paper. This method first by local binary pattern (LBP) algorithm to extract the image feature which is not affected by light information, then get the five characteristics values of image texture feature by gray level co-occurrence matrix. Through comparative experiments show that this method can effectively reduce the illumination of the adverse impact of environmental factors on the camouflage effect evaluation, camouflage effect evaluation result more accurate and reliable.
The user interface development tool Tilcon is used in embedded system and can be supported by multiple platforms. Aiming at the multi-target information sorting system, the graphical development tool Tilcon has been used on VxWorks, the software system architecture is designed. The implementation method of HMI, multi-page interactive display, Chinese characters display and target dynamic display are also described. Practical application shows that the system architecture is legible, with easy operation, high reliability and good alternating.
The stereo RCS of ship target is a main parameter in electronic warfare weapon efficacy test. Because of the difference of radar waves' incident angles, RCS of target exist different. This paper presents a RCS difference analysis method of feature selective validation, based on the character of ship target RCS in outfield and data analysis of ship RCS electromagnetic simulation. By analyzing the global difference quantity of RCS from different incident angles, the stereo RCS incident angles interval of ship target between outfield measurements is obtained. This method provides the basis for airborne platform RCS measurement scheme design, and advance the cost-effectiveness of outfield measurement. At last, this method has a certain guiding significance to the target providing analysis in new high-trajectory missile weapon system trial.
For solving the low efficiency problem in situation plotting of mass dynamic targets on command and control system, studied the restriction factors of battlefield situation real-time processing and display efficiency, and the application of GPU parallel acceleration technology in graphic processing and display. By introducing GPU parallel accelerated graphic processing technology into the situational display processing of command and control system, designed a battlefield situation real-time display system and proposed the optimization display method based on GPU acceleration strategy. Actual test shows that the method significantly improved the efficiency of mass dynamic targets situation real-time plotting, enhanced the fluency of situation real-time display on command and control system.
The processing of flight data is very important for the aircrafts' safety. However, error on flight data can significantly influence the processing results. On analyzing the basic compositions of error on flight data and the elimination methods of unconventional error on flight data, error is classified and four methods of different values rejection and missing data estimation are presented according to different type flight data. The result of the simulation shows that the four methods greatly improve the effectiveness and can be convenient for post-processing of flight data.
According to the precision guided ammunition by a radio frequency beam rider for OTO 76mm gun developed by Oto Melara, an improved dynamic guidance control method based on original combat operation are introduced to limit overload for multiple guided projectiles. By calculating the range of maneuver of the guided projectiles under the condition of the given maximum overload, the method calculates the direction parameters of the transmitter, and realize the overload control of the guided projectile. A simulation model is established to simulate the process of three kinds of Terminal-Maneuvering anti-ship missile tracked by guided projectiles. Considering the tracking error of sensors, the results show that new proposed guidance control method ameliorate overload of projectiles effectively.
A command and control system validation method is proposed based on it's feature and it's validation definition. The method suggests building a command and control system validation platform with both real and simulation system to create an actual combat environment. In view of common needs and overall requirements, key techniques of command and control system validation such as scene construction, model building, resource integration, data sharing and data management are presented, then analysis and technical solutions, and finally the conclusion are put forward.
The glide beam guidance system is designed based on total energy control theory. This designed control system can achieve decoupling control of flight speed and flight path in Unmanned Aerial Vehicle (UAV) automatic landing, then UAV's accurate glide path is achieved. In this paper, the structure of the control system and the selection of appropriate control parameters are built on the basis of glide beam guidance system and total energy control theory. An UAV's platform is established in Matlab/simulink to simulate the control system. The simulation results show that the control system can achieve the combined control of the throttle and the elevator, which can decouple flight speed and flight path angle. Using this control system, the UAV can realize precise fixed point landing.
