作战仿真中的机动行为建模方法研究

以装备保障仿真为例,针对装备保障仿真机动行为建模中存在的模型逼真度不高的问题,从机动行为的需求生成、环境因素的分析、指挥层建模、执行层建模四个方面进行了研究,提出了适合装备保障仿真的机动行为建模方法,对解决装备保障仿真中机动行为模型的逼真度具有一定的参考价值和指导意义。     

体系对抗下的跨层协同指挥与控制网络的性能分析

文章以未来信息化战争环境为前提,以传统的指挥与控制网络为基础,对未来一体化联合作战特点进行了分析,构建跨层协同指挥与控制网络模型,并采取网络建模和仿真的方法对网络模型的结构、抗毁能力进行详细探讨。     

信息化条件下的一体化联合指挥控制流程建模

为了在作战单位规模、数量较大的复杂环境中获得有效的作战指挥命令，提出了一种信息化条件下的一体化联合指挥控制流程建模方法。使用实体层和功能层双耦合信息化网络，得到作战单位间的联合、指挥和增援的信息协同共享关系，明确作战单位序列号、上下级指挥关系、部队拥有资源、需求资源、任务清单、部队可并行完成任务量以及重要程度。通过Agent框架，从知识库建立、战场态势评估、指挥控制决策和自组织学习4个方面构建联合指挥控制流程模型。实验表明，所建模型指挥控制流程合理、逻辑正确，可实现有效指挥控制。     

美国陆军授予CACI国际公司夜视建模和仿真合同

CACI国际公司宣布收到3600万美元的合同为美国陆军夜视和电子传感器建模和仿真分部研制在部队训练中使用的与关键指挥、控制、通信、计算机、情报、监视和识别系统相关的软件仿真．这是美国陆军NVSED自2007年11月起第6次授予CACI国际公司合同,总额超过12900万美元．     

基于UML的航空兵作战指挥控制系统建模研究

面向对象的建模方法是目前建模领域最流行的方法之一,UML是支持面向对象思想的一套建模规则。文章分析了基于UML的面向对象建模的一般过程,并针对航空兵攻防作战的一个典型模式,对其作战指挥控制系统进行了建模研究,验证了这套理论在仿真系统建模中的可行性。同时,使用基于UML的面向对象建模方法能够缩短仿真系统建模周期,增强仿真模型的易理解性和可重用性。这套方法也可为军工行业中同类型仿真系统建模活动作借鉴和参考。     

某非相参单脉冲雷达系统混合建模与仿真

对某非相参单脉冲雷达的测距和测角系统进行计算机建模和仿真.给出接收机前端射频部分的物理仿真模型和中频、视频的数学仿真模型的系统仿真框图以及部分仿真波形.仿真波形的结果说明了所建立系统模型的正确性以及对系统进行混合仿真的可行性.     

C4ISR系统概念模型元素研究

概念模型是C4ISR系统建模过程中的一个重要环节,目前C4ISR系统概念模型的研究对模型元素的描述不够细化.由此将C4ISR概念模型的5个核心元素扩展为14个元素,并分析了它们的特性,包括属性、特征等要素.给出了从规范化文档中抽取模型元素的方法,实例表明该方法是可行的.     

封闭空间内的多模型自适应有源前馈噪声控制

误差通道建模是实现自适应有源噪声控制算法的重要环节.由于次级通路建模误差对整个系统稳定性有重要影响,利用Modified FXLMS算法结合多模型自适应控制与封闭空间误差通道特性,提出一种针对封闭空间自适应有源控制的多模型算法,完成了该算法的性能分析和计算机仿真.     

大中型光立方体及驱动组件建模与仿真

针对大中型光立方体系统硬件设计的繁杂性和显示控制效果因缺少模型难以验证的问题,基于平行投影原理和Proteus软件的建模技术,提出并设计了光立方体虚拟仿真模型及其通用驱动组件模型。以3D8光立方体为例进行建模,并对驱动时序和字符图案显示进行了系统仿真验证。同时,根据该建模方法设计了3D16、3D32和3D64光立方体及驱动组件,仿真验证了汉字、点云模型的显示效果。结果证明:该建模方法能较好地反映光立方体系统的软硬件工作原理,为光立方系统设计验证提供了准三维虚拟可视化方法,为大中型光立方体的多样化显示、扩展以及三维立体显示器的研究和工程应用设计等提供了模型参考。     

基于用户驱动的网络中心战指挥控制系统研究

指挥控制系统是网络中心战实施的关键环节。通过对网络中心战指挥控制系统的研究, 提出一种基于用户驱动的指挥控制系统概念模型, 并以战役对抗为例, 实现了一种网络中心战的指挥控制系统作战流程, 并在VStasker仿真平台上进行了对抗部分的仿真和验证, 对网络中心战指挥控制系统的具体实现进行了有益的探索。     

The role of bond graph modeling and simulation in mechatronics systems: An integrated software tool: CAMP-G, MATLAB–SIMULINK

One of the main and most challenging steps in the design and analysis of a mechatronics system is to generate a computer model. This paper explores the fundamental theory, the methodology and the process from conceptual ideas to practical realization. Using a multienergetic approach that allows the modeling of interdisciplinary models, it explores the theory and method to automate the process of the generation of the differential equations and how to automate the derivation of transfer functions. The approach is discussed for linear and non-linear systems. The generation of a computer model takes new dimensions when that model contains mixed energy domains such as electromechanical, electrohydraulic, thermo-fluid, and electronic control systems all together. These are typical of mechatronics applications. This paper explores the bond graph technique as a modeling tool to generate state space models or non-linear models together with software tools. CAMP-G (Computer Aided Modeling Program with Graphical input) has been developed in order to generate computer models automatically and have them integrated with MATLAB–SIMULINK as simulation tools. Several aspects of mechatronics systems design have been investigated in order to focus on which areas the bond graph modeling technique can help engineers in the process of creating mechatronics systems from scratch. Towards this end, the paper deals with computer-generated models of sensors, actuators, and multidisciplinary complex physical systems.     

红外成像制导导弹激光压制干扰数学仿真评估方法分析

介绍了基于野外测试的红外成像制导武器激光压制干扰系统性能评估的数学仿真评估方法。在仿真理论和野外测试的基础上,就干扰系统性能评估的数学仿真技术和评估方法进行了具体分析,其中包括红外目标与背景的解算、红外目标与背景图像的计算机生成、强激光大气传输及其与物质作用模型建立、制导控制运动模型可控弹道解算、数据库建设、仿真模型校验等。重点对红外成像制导导弹激光压制干扰数学仿真评估中导引头输入信号生成环节的模型和数据库建设进行了分析。     

Model-based system design of annealing simulators

We discuss several aspects of mechatronic product development processes, such as finding and evaluating design concepts and dependencies between design parameters. One of the key issues in the development of modern mechatronic systems is the benefit of consistent integration of mechanical, electrical, and electronic control and software aspects from the very beginning of the earliest design phases. Even for a single design problem defined by a given specification, different designers will probably respond with a variety of different design concepts, each of which may be acceptable in terms of meeting the specification. In the conceptual design phase, we propose that some aspects of design, such as hierarchy of parameters and modularity of the design, are analysed with conceptual models. The application presented in this paper shows the conceptual design of an experimental laboratory annealing simulator (anneal.sim-lab). Physical simulation of the annealing process requires consideration of different heating methods for various types of specimen. One critical step is the modularisation of sections (annealing, cooling, and quenching), and their geometric arrangement. We use a design structure matrix to analyse the requirements and their structure and demonstrate a realisation in a parametric 3D-CAD model.     

Deep learning-driven distributed communication systems for cluster online educational platform considering human–computer interaction

The wireless network environment has become increasingly complex, diverse, and dynamic. In recent years, the introduction of new concepts such as green networks and smart networks has diversified the optimization objectives of the spectrum resource management. Under this background, this paper proposes the novel deep learning-driven distributed communication systems for cluster online educational platform considering human–computer interaction. Before the modeling, the literature review and the state-of-the-art methodologies are introduced. For the framework design, first, the novel distributed communication system is designed considering the integration of the Q-learning under the deep neural network structure. Then, the cluster computing model is integrated for the system to enhance the robustness. Later, the human–computer interaction together with the movement tracking models is proposed to finalize the interactive online platform. The simulation results show that the proposed algorithm can extract the information accurately, and transmission efficiency is guaranteed. Compared with the latest platforms, the proposed outperforms from the aspects of accuracy and efficiency.     

Dynamic Modeling and Analysis of Z Source Converter—Derivation of AC Small Signal Model and Design-Oriented Analysis

This paper contributes to the AC small signal modeling and analysis of Z source converter (ZSC) in continuous conduction mode. The AC small signal model considers the dynamics introduced by Z network uniquely contained in ZSC. AC small signal model of ZSC is derived and computer simulation results are used to validate the small signal modeling method. Various applications of the AC small signal models to ZSC design and experimental verifications are presented.     

A Queueing Model for Radio Nets--Part I: Methodology

In voice radio communication nets, digital-frequency assignment patterns and multiple-access discrete address transceivers are being studied to improve grade of service, mean access delay, and other aspects of system performance. An analytical methodology based on a calling system-outer system queueing model is presented. This model permits study of these radio communication problems and system design tradeoffs without computer simulation. In addition, the model utilizes several types of statistics (e.g., Poisson, Erlangian, or hyperexponential). In this paper, the model and the mathematical methodology are explained in detail. Formulas for equilibrium performance measures are derived from their definitions. The concept of station-busy probabilities is introduced and a matrix technique for obtaining numerical results is illustrated.     

MEMS刻蚀工艺仿真模型及研究进展

随着计算机技术和微机电系统发展的需要,微加工刻蚀工艺的计算机模拟得到了飞速发展。综述了微加工刻蚀工艺的研究现状以及几种典型的工艺刻蚀仿真方法,分析了各种方法的优势和不足;重点介绍了在基于各向异性刻蚀方面应用广泛的元胞自动机法(CA),分析其优势所在,并阐述了CA模型的基本原理、发展变化和研究应用。     

Parametric 3D reconstruction of the distribution density of point objects

The parametric reconstruction method has been developed for solving the problems concerning computer simulation of the 3D distributions of discrete objects, which are commonly specified by the parallel cross sections in the initial point cloud. The role of simulation and the model itself is examined as applied to the visualization of 3D distributions of objects and the analysis of microscopy data. The conceptual prerequisites and particularities of the technical implementation of the proposed method are compared with the lofting technique, which is widespread in modern 3D simulation systems. The peculiarities of method application are demonstrated by the example of reconstruction based on a series of model data.     

微波半导体器件的计算机模拟

本文介绍半导体器件计算机模拟的物理模型和计算方法.以分析微波崩越二极管的大信号时间域模拟说明进行微波半导体计算机模拟的原理和过程,并给出对工作频率为40千兆赫的双漂移砷化镓崩越二极管进行计算机模拟的计算结果.     

A computer simulation model for the evaluation of mobile radio systems in the military tactical environment

A computer simulation model, designed specifically for the analysis and evaluation of military mobile radio communication systems in the tactical environment is discussed. The algorithms and performance models used in the simulation model are briefly described, while statistical characteristics are derived analytically for a simplified scenario. Typical computer-generated histograms and distribution functions are presented for the more complex scenarios. The computer simulation model is shown to be an effective design tool for many different applications.