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 operational elements shown in the current battlefield posture diagram presents the characteristics of large quantity, miscellaneous information and fast changing, which makes it difficult to grasp battlefield dynamics accurately in real time and prone to cognitive overload problems. Aiming at the above problems, this paper proposes the construction and display-method of battlefield situation heat map based on improved weighted kernel density estimation method. The method displays the battlefield situation hot spot which conforms to the intuitive cognition of human by the way of commander's demand selection, the battlefield hot spot value calculation, the color table mapping and the situation map fusion. The analysis of example and result shows that the method presented in this paper can effectively screens the situation information and highlights the hotspot of the situation, which have excellent display effect and application prospect.
The impact of satellite reconnaissance information time efficacy on long-distance accurate strike is investigated, which is significant for improving the operational efficiency of anti-surface missiles. According to the operational process of satellite reconnaissance information supporting on long-distance accurate strike by the sea, both the calculating model of satellite reconnaissance information time efficacy and missile catching probability are established. The calculating and analyzed results prove that in the acceptable range, the time efficacy of satellite reconnaissance information can meet the demand for long-distance accurate strike.
The shipborne integrated radar and ECM system as a new information system, radio resource scheduling is the key to give full play to the combat effectiveness, using the bat algorithm, with a single ship to air combat as an example, the "operational steps" for cohesion, established the "target—radio resources" allocation strategy, multi requency resources scheduling model of multi target is defined, and simulation results are consistent with the principle of resource scheduling optimization of single ship to air, which is instructive for the shipborne Integrated radar and ECM system resource scheduling.
Found a planning model based on the task unit by decomposing the mission of the army synthetic battalion, with the decision variable of each unit of synthetic battalion's scale to execute the task unit, and the constrain condition of quantity of the operational resources and the synthetic battalion's combat unit, and the objective function of minimum injuries and deaths inferred by Lanchester equation. Dynamic formation has been achieved.
In order to solve the problem of formal description of military conceptual model for main command post operations, this paper adopts the use case diagram to describe the functional model, the class diagram to describe the marshalling model, the timing diagram and activity diagram to describe the dynamic model by utilizing UML which is based on the analysis of the task organization for main command post operations. Above-mentioned models provide support for the development of simulation system of main command post operations.
The method of combat experiment provides a new research perspective and an effective scientific method for military scientific research. It is significant to study the operational planning index in the Air Attack and the Air Defense. This paper attempts to simulate a typical support jamming model using the factorial experiment method, analyzes the factors that affect the operational planning, in order to provide reference for the route planning of assault elements in Air Attack operation and selection and use of the surface to air missile equipment in Air Defense operation. It is of some military significance to objectively reflect the law of operation through factorial experiments.
On the basis of analyzing and comparing the ballistic trajectory difference between boost-glide hypersonic anti-ship missile and traditional anti-ship missile, point-mass equation for missiles and target maneuver models are built, which are founded on the optimum guidance law with a terminal angular constraint of the dive phase, simulation analysis of the ballistic trajectory of boost-glide hypersonic anti-ship missile is conducted. Then engagement simulation models are built that between boost-glide hypersonic anti-ship missile and phalanx system. The penetration probability of boost-glide hypersonic anti-ship missile is simulated by the method of Monte-Carlo, which is influenced by vehicle and path angle. The ability of boost-glide hypersonic anti-ship missile breaking the defense of phalanx system is got, which is providing theoretical support for operational use of boost-glide hypersonic anti-ship missile.
To solve the topological model generating problem of wireless communication network, the existing methods for topological construction are analyzed. A topological evolving model of wireless communication network with the node degree constraint is proposed according to the characteristic of wireless communication network. The evolving method and the flow of algorithm on the wireless communication network are studied, and the degree distribution of the model is analyzed and calculated. The degree distribution and network efficiency of the network are simulated. The simulation results indicate that the network generated by the model has the small-world characteristics and power-law distribution approximately, which can well satisfy the topological structure of wireless communication network.
Aiming at the problem of the radar reconnaissance image processing in the later stage was heavily influenced by the multiplicative noise, an image denoising mode based on wavelet analysis and variation principle was proposed. First of all, the model decompose the radar reconnaissance image into a low frequency band and three high-frequency band by using bior3.7 wavelet, then use the wavelet soft threshold method to filter the low frequency noise, and use the the improved total variation model to filter the high frequency noise. Finally, the image is obtained by the wavelet inversion. Among them, The improved total variation model is obtained by improving the diffusion coefficient and the fidelity coefficient of the original total variation model. MATLAB simulation results show that the peak signal to noise ratio of the model in this paper has been increased nearly 1.2dB. Meanwhile, it can keep image edges and details very well.
Conventional histogram equalization has some shortcomings, such as increasing image noise and local excessive enhancement. To overcome such shortcomings, this paper proposes an image enhancement algorithm based on adaptive multi sub-histogram equalization. Firstly, divide the histogram of original image into four sub-histogram; then, remap the gray level of each sub-histogram; next, divide the histogram once again and adjust the frequency of the gray level in the sub-histograms; finally, the histogram equalization is implemented to each sub-histogram. Simulation results indicate that the improved algorithm not only can reduce the effect of local excessive enhancement, but also preserve the details of the original image.
Fast and accurate simulation of communication countermeasure effective positioning area, is an important basis for mastering the commander quantitative reconnaissance equipment location, however, the existing location area calculation model based on the assumption of smooth surface, less consideration of the blind location caused by terrain barrier, which leads that existing model cannot be used as obstacles to mountain combat environment. For the rapid screening of blind spots, by using the method of equivalent grid, a new terrain blocking condition of ultrashort wave communication countermeasure effective location area calculation model is set up. Example analysis shows that the model can effectively and quickly judge and distinguish the positioning of the blind.
This paper generalizes two classes of statistical maneuver test methods: χ2statistic test and probability ratio test. We apply a method of sequential marginal likelihood ratio test(SMLRT) to maneuver detection. We compare the performance of this proposed method with IMM, MR and IE's. Simulation shows that SMLRT has its priority comparing others', when the prior distribution of maneuver acceleration fits (Mixture Gaussian) to the real distribution.
Focus on the current anti-terrorism military linkage plan from the actual and not timely disposal and other practical problems, in order to solve the key problem of scientific agile decision-making in complex environment such as cities and mountains, this paper introduces the ACP calculation of social ideas, put forward the anti-terrorism parallel decision research methods. According to our country's border anti terrorist operations analysis, discusses the operation process of the parallel simulation system in the anti-terrorism field from the point of view, provides a new solution for the complex environment on military counter-terrorism.
The current method of counter-terrorism assessment are fuzzy and random. The cloud models could help to identity a feasible method to assess the counter-terrorist combat capacity. Firstly, the paper analyzes the traits of combat missions, the principle of disposal and the compositions of the combat power during the Armed Police Forces conducting tasks. Then, the counter-terrorism assessment framework is introduced. It analyzes the methods of indices extraction, index system establishment and index weighting. As a result, an assessment method of the counter-terrorism capacity based on Uniform Gaussian Cloud Model is proposed. Furthermore, the example studies verify that U-GCM could give a scientific and intuitive conclusion of the counter-terrorism capability in a PAP unit.
According to joint experiment and training simulation problem of warship combat system, the supporting capacity requirement of collaborative simulation environment for warship combat system experiment and training integration is analyzed. With the idea of highlight the domain advantages, sharing experiment and training resources, integration combat experiment and training, the task community description model and evolution relationship of warship combat system experiment and training are established. Based on service oriented architecture (SOA), the architecture of collaborative simulation environment for warship combat system experiment and training integration is proposed. The composition structure of collaborative simulation system for warship combat system experiment and training integration is designed and key technology of this system is given. It provide a feasible technical approach for construction of collaborative simulation environment for warship combat system experiment and training integration and it has certain practical reference value.
According to the applies the scene of the simulationg model for the carrier-borne group of planes attacking ships, base on the analysising the function requirement of the military concept model for carrier-borne group of planes attacking ships, the simulation model frame for the Carrier-borne Group of Planes Attacking Ships was designed. And the data requirement for the model running was summit. It has important value to built the simulation model for for the carrier-borne group of planes attacking ships.
To study the background of bearing low-altitude defense mission, the visual simulation system of a certain kind of infantry combat vehicle is designed. First of all, based on Vega Prime/Multigen Creator and takeing Visual C++. Net as a programming and development platform, the Kalman filter is used to measure the informations of the target, including the location, the speed etc; Then the obtained data is imported the channel simulation program, the fire control program finds the answer of firing data; Then, based on the exterior trajectory equations, the track of the shell which is fired by the combat vehicles is simulated. Finally the shell hits the target. The related technologies used are DOF, impact checking, as well as a variety of blade,flame, explosion and other special effects. The program can complete the whole process of infantry combat vehicle strikes the target. According to the simulation results given, it shows that the simulation results are good.
Modeling and Simulation is important at all stages of weapon equipment system-of-systems development. However, little work has been put into taking data from the architectures and exercising them in a constructive combat simulation environment. This paper details a method for finding architecturally feasible alternatives to weapon equipment system-of-systems capability problems in early phase acquisition using Object-Process Methodology (OPM) and Agent Based Modeling and Simulation (ABMS). The method is a preliminary study on OPM based architecture development and executable model in constructive combat simulation to weapon equipment system-of-systems capability assessment.
The development of demonstration evaluation systemfor army aviation weapons and equipment capacity is an important means to realize the engineering of the requirements of the army aviation equipment. It is conducive to improving the quality and efficiency of the requirements of the army aviation weapons and equipment. By analyzing the functional requirements of the army aviation weapons and equipment capability, the overall design framework of the system was clarified. The software structure and network structure of the system were designed. The system can realize the army tactical index system of aviation weapon equipment argumentation and quantitative evaluation function, effective traction industrial sector scheme design, boosting demand traction and technology to promote positive interaction.
The satellite communication system is designed to transmit high-quality signals to the receiver to ensure proper communication between the two parties. A basic satellite link consists mainly of originating earth stations, uplinks, satellite transponders, downlink and end-of-earth stations. Since the satellite communication uses long-distance communication, and the power of the transmission signal is inversely proportional to the square of the transmission distance, the signal received and forwarded by the satellite transponder is very weak and susceptible to interference and destruction. In this paper, based on the investigation and analysis of the satellite communication system, the interference of satellite transponders is studied. Based on the analysis of the link performance under transponder interference power and transponder interference, the different ρ (ρ is the interference signal to the total bandwidth of the transponder) in the under-saturated linear state and the supersaturated nonlinear state of the transparent transponder Ρ part of the frequency band), and the relationship between the interference ratio and the interference coverage and the interference coverage area is found. The relationship between the interference signal and the interference coverage area is analyzed. Design and improvement provide a certain basis.
The design methods of developing flexible LAE simulated training system are proposed, which emphasizes on exploring an efficiency way to improve the flexibility of software, efficiency of development, and reusability of simulation resources. First,a layer software architecture is put forward. Then, in order to extract training context from training environment, the “plug and play” simulation control mode and the design methods of reusability simulation resources are discussed in detail. Then, the new ideas of multistage score evaluation and of self-teaching are also presented.
The battlefield situation service system provides battlefield commander services of situation by subscribing, pushing or searching and provides scene supporting for them to grasp the battlefield quickly and to analysis battlefield situation scientifically. In this paper, the problems of the existing system are analyzed and the prototype of system is designed and implemented which based on the concept of service and oriented architecture. The function designing, system architecture, system deployment and system implementation of the system are described in detail, which can be used as reference for the construction and application of the situation service system.
The classical Least Squares algorithm is limited in measured data post-processing. This paper discusses the question of least square estimate for multi-radar nonlinear model by importing Jacobi matrix, adopts Bayes estimate for the measured data with prior information, uses ridge estimation formula to resolve design matrix multiple correlations of measured data. For different test project and measured data with all kinds of errors, fit formula should be chosen bases the factof measured data. This paper provides a new way to the application of Least Squares and its improved algorithm in measured data post-processing.
According to the problem that traditional passive jamming could not interfere with missile with track-while-scan terminal guidance effectively, this paper analyzed a method of chaff-screen jamming and the factors affecting the effects of inference, studied the decision method applied on projecting chaff-screen. Through modeling and simulation, the method of chaff-screen jamming can effectively counter anti-ship missile with track-while-scan terminal guidance. The result has certain reference value for related passive jamming operational use.
The ballistic missile rising section includes both the boost and the free segment, its complex dynamic characteristic is difficult for single model to achieve precise and stable tracking. This paper presents an adaptive asymmetric multiple model algorithm for the estimation of the ascent trajectory, unifies the model state vector, the model set is constructed by three-dimensional current statistical model and accurate dynamic model. Simulation results show that, the algorithm realizes the high precision tracking of the rising segment of the missile and the effective detection of the shutdown point, compared with the traditional CS algorithm, the estimation accuracy of the free trajectory is improved by 68.9%, and can effectively detect the missile motion mode, the detection delay is less than 2S, the sliding section the transient error is reduced by 79.5%.
The firing accuracy of one dimension trajectory correction projectile is mainly influenced by both the error of forecasting point of fall and the working error of correction equipment. In order to improve firing accuracy, the rule was analyzed that the deviation between point of fall and target was influenced by the forecasting error and correcting error, and then the method of calibrating two errors was demonstrated that the range correction of subsequent projectile was calibrated by the average deviation between point of fall and target or predicted point. Thirdly, the accuracy model of firing correction was demonstrated. It is proved that the firing correction method can improve firing accuracy by simulating.
This paper presents a construction method of quasi-cyclic low-density party-check(QC-LDPC) codes,whose information parts are based on the Fbonacci sequence while the check parts are based on IEEE802.16e standard.Because of the quasi dual-diagonal structure,it can lower the complexity and save the memory space through fast encoding algorithm.Simulation results show that the proposed codes is better than Gallager codes when the code length is shorter.Besides,there are many good codes at a lot of length by changing the size of the cyclic matrix.
Ground crosswind test belongs to MOC5 subject of civil aircraft flight tests. The objective is to verify the starting and working capability of the aircraft engine and Auxiliary Power Unit (APU), which is critical test for the aircraft power system. The organization of the test is difficult because the crosswind, as a special weather condition, is hardly to be captured to satisfy the airworthiness requirement. This study introduces a reasonable establishment of the test organization and effective implementation of test contents. Through several aircraft adjustments and crosswind pre-tests, accurate weather prediction is obtained based on the numerical model of high spatial and temporal resolution. In order to make timely decision-making, this study applies the moving average method creatively in data acquisition and finally completes the test with the airworthiness requirement satisfied. The successful organization and implementation of the ground crosswind test lays a good foundation for subsequent flight test as well as further tests for other aircraft types
