基于JMASE的雷达系统建模与仿真

联合建模与仿真环境（JMASE）是一个面向武器系统开发、测试与评估领域的建模与仿真支撑环境.JMASE通过定义一系列标准、服务和模型接口以及面向对象的设计方法,极大地促进了不同领域仿真模型的可重用性和互操作性,并提供一组功能强大的工具借以帮助用户实现模型开发与分析过程的标准化.首先介绍JMASE的设计思想和体系结构,然后讨论雷达系统仿真的基本原理及其仿真架构,最后给出一个地面简单脉冲搜索雷达仿真实例及其仿真结果.     

基于FLAMES的电子战仿真模型的组合建模

随着军用仿真技术的不断发展,使得多领域的模型集成变得更加困难,模型组合和可重用性不足问题显得十分突出。阐述了组合建模和柔性行为分析与建模评估系统（FLAMES）建模原理,针对FLAMES柔性仿真框架下建模灵活性的特点,并结合关联假设的组合建模理论,提出了基于FLAMES的电子战仿真模型的组合仿真概念框架和建模方法,以某型电子战飞机为例,通过仿真实验分析仿真数据。结果表明,该方法能够有效对模型进行组合建模,能为基于FLAMES柔性仿真框架的模型组件开发及其组合建模提供一定的依据。     

基于HLA雷达信号建模仿真

数学仿真试验是实现对雷达电子战系统的性能鉴定与作战效能评估的重要技术手段.以雷达电子战作战效能评估需求为背景,提出基于高层体系结构(HLA)建立雷达信号仿真系统,完成雷达相干视频仿真,仿真雷达在电子对抗条件下目标探测、确认、跟踪及识别的全过程,同时作为HLA一个联邦可以集成到更高级别的仿真系统中.基于HLA雷达信号仿真关键技术包括FOM/SOM的开发、HLA接口、雷达信号模型的建立、用户界面等方面的内容.重点阐述HLA联邦成员设计与雷达信号建模两方面内容.     

通用雷达杂波仿真系统的设计与实现

以雷达电子战系统仿真与评估为应用背景,基于信号级建模仿真方法和通用化、模块化设计思想,构建了适用于多种雷达电子战系统仿真应用的通用雷达杂波仿真系统,介绍了系统的设计与实现方法,给出了其中的关键仿真模型。该系统能够对固定平台和运动平台下雷达所接收的地/海杂波以及气象杂波进行信号级模拟。最后给出了仿真结果,验证了该系统的有效性。     

基于计算实验的电子战作战仿真

电子战作战系统是一个复杂的非线性动态系统,基于还原论的建模方法难以解决电子战作战系统的复杂性问题。首先探讨了电子战作战系统的复杂性问题,然后论述了研究电子战作战系统的新的仿真理念--计算实验,最后从两个方面对电子战作战系统的建模与仿真进行研究：一是自下而上的多Agent作战仿真方法;二是自顶向下的探索性分析方法。     

应用SystemVue和STK进行虚拟飞行测试,验证雷达性能

Keysight SystemVue(电子系统仿真软件)能够与AGI STK(惯性与环境建模软件)集成,提供雷达和电子战算法的虚拟飞行测试,从而节省大量测试时间和测试成本采取系统级方法进行复杂设计,通常需要前期集成和分析,但可以确保在实施过程中工程师的时间和精力关注在"能带来成功"的设计战略上面。本文将讨论如何结合是德     

目标与场景的红外特性建模与仿真软件的发展

目标与场景的红外特性建模与仿真是红外成像仿真与红外成像系统性能评估的一项关键的支撑技术。近20多年来国外已经系统地建立了对各种目标和背景环境及干扰的红外辐射特性的建模、仿真方法,并开发了多种专用软件和商用软件。综述了国外近年来发展的主要的目标与场景的红外辐射特性建模与仿真软件。     

机电系统一体化建模与仿真实验课程建设

利用先进建模与仿真技术,开展了先进仿真技术人才培养实验/实践基地的建设工作,开发了一系列具有通用性、综合性的先进仿真技术系列实验课程。利用ADAMS和MATLAB等软件工具,进行机电系统一体化建模与仿真是本实验系列课程中的一类。通过讲授机电系统建模理论和方法,提供建模工具,重点培养学生利用建模与仿真工具进行复杂仿真系统的设计、分析和测试,提高解决实际工程问题的能力。     

美国海空军急需新一代射频威胁模拟器

据报道,美国海军空战中心武器部(NAWCWD)急需一种便携式闭环作战射频对抗(RFCM)评估系统,这是一种新一代射频仿真与试验装备,该装备可评估先进的电子战系统,如下一代干扰机(NGJ)以及一体化防御对抗(IDECM)系统Block5。RFCM评估系统除作为海军通用系统外,同时也是一个联合采办     

雷达电子战仿真系统设计

雷达电子战（REW）仿真系统是用于研究和评估多种干扰样式和干扰信号的计算机仿真系统。本文介绍了一种采用VC＋＋与MATLAB交互的REW仿真系统,该系统可以完成对雷达的压制与欺骗干扰仿真,并对干扰效果进行初步的评估。分析了该仿真系统的基本组成、软件结构和实现方法,论述了其中涉及的若干关键技术。最后,在给定的场景下对该系统进行了仿真实验,仿真结果验证了该系统的有效性和实用性。     

Real-time automated register abstraction active power-aware electronic system level verification framework

All modern low power system on a chip (SoC) architectures are equipped with an in-built power management system. Every new system is expected to have more features and lower power consumption, resulting in a continuous demand to improve energy efficiency. To cope up with the ever increasing demand, an active power-aware management verification architecture is necessary to minimize the power consumption. Power reduction techniques include clock-gating, power-gating, multi-voltage, and voltage-frequency scaling. The proposed verification architecture utilizes the Unified Power Format (UPF) 2.1 libraries to achieve early design verification at the Electronic System-Level (ESL) of abstraction. The proposed testbench can verify several designs of different power management schemes. The presented work offers a reduction in power states, CPU time and simulation time as compared to existing techniques. The interactive formal and simulation-based verification methods are used in this paper to remove the simulation artifacts during functional and power co-simulation. Additionally, this paper incorporates functional correctness and power-aware checks for different modules of Design Under Verification (DUV) at Transaction-Level Modeling (TLM).     

平台+插件式软件框架模型的研究

对插件式的软件框架模型进行了研究,提出了适用于设备专用软件的"平台+插件"框架模型,描述了该模型的结构、调用过程和实现方式.从有利于设计出高度模块化、可定制、有系列化功能扩展、软件并行开发以及快速集成等方面探讨了该模型的优势.     

Virtual center for renal support: technological approach to patient physiological image

The patient physiological image (PPI) is a novel concept which manages the knowledge of the virtual center for renal support (VCRS), currently being developed by the Biomedical Engineering Group of the University of Seville. PPI is a virtual "replica" of the patient, built by means of a mathematical model, which represents several physiological subsystems of a renal patient. From a technical point of view, PPI is a component-oriented software module based on cutting-edge modeling and simulation technology. This paper provides a methodological and technological approach to the PPI. Computational architecture of PPI-based VCRS is also described. This is a multi-tier and multi-protocol system. Data are managed by several ORDBMS instances. Communications design is based on the virtual private network (VPN) concept. Renal patients have a minimum reliable access to the VCRS through a public switch telephone network--X.25 gateway. Design complies with the universal access requirement, allowing an efficient and inexpensive connection even in rural environments and reducing computational requirements in the patient's remote access unit. VCRS provides support for renal patients' healthcare, increasing the quality and quantity of monitored biomedical signals, predicting events as hypotension or low dialysis dose, assisting further to avoid them by an online therapy modification and easing diagnostic tasks. An online therapy adjustment experiment simulation is presented. Finally, the presented system serves as a computational aid for research in renal physiology. This is achieved by an open and reusable modeling and simulation architecture which allows the interaction among models and data from different scales and computer platforms, and a faster transference of investigation models toward clinical applications.     

模糊综合评判在电子对抗决策系统的应用

电子对抗决策支持系统须具有时效性和科学性,决策支持系统智能化是未来发展的一个方向。设计了一种应用于通信对抗系统的干扰模糊辅助决策器,构建了其体系结构框架,建立了其数学模型并分析了各级主要评判因素模型和实现方法,给出了辅助决策的多级模糊综合评判系统的算法。仿真表明该方法具有较为合理的推理结果和较强的工程应用性。     

基于HLA的装备保障全要素集成模拟训练系统设计

为提高装备保障训练效果,从装备保障全要素集成训练需求出发,设计了装备保障全要素集成模拟训练系统功能层次结构,设立了三种训练模式,合理区分了训练层次。基于HLA设计了模拟训练系统的体系结构,并提出了系统软件设计总体方案。最后系统阐述了装备保障全要素模拟集成训练系统的工作流程。该模拟训练系统可为装备装备保障全要素集成训练提供训练平台支撑。     

基于PREEvision的电子电气架构开发研究

提出一种基于PREEvision(基于模型)的电子电气系统/架构设计方法,从用户需求定义开始,到系统功能逻辑/软件架构,硬件架构,将功能部署到控制器及信号路由,通信设计以及线束、拓扑定义,分层级对电子电气系统进行详细设计描述。基于E/E系统的模型,建立多维度评估模型,衡量系统/架构设计各项指标,以便对设计方案进行评估选择。     

面向认知对抗的学习训练与仿真评估系统设计

针对认知电子战装备面临的作战场景复杂多样、真实数据难以获取、实战训练成本高昂等问题,为满足认知电子战系统方案论证、关键技术研究需求,将人工智能技术与系统仿真技术相结合,通过建立认知电子战装备及其典型作战对象的信号级模型,以及模拟电子战装备与作战对象在复杂电磁环境下的信息交互过程,构建面向未来战场认知对抗的学习训练与仿真...     

A custom VLSI architecture for the CCITT wideband coding standard

A custom VLSI architecture for implementing the CCITT G.722 64-kb/s (7-kHz) wideband audio coding standard is presented. By tailoring the architecture to the algorithm, an architecture was designed that is capable of processing a full duplex channel in less than 625 cycles. That is 71-73% less cycles than are required by the reported general-purpose DSP implementations. In a 1.5-μ technology with a 100-ns cycle time, it is estimated that the architecture would consume 95000 mL² of silicon and support two full duplex channels on a single chip. The authors wrote a behavioral simulation of the architecture and its implicit microcode. This simulates the architecture's behavior at the bit level. The simulation passes the CCITT G.722 test vectors, demonstrating that the implementation conforms to the standard     

A layered modeling and simulation architecture for agent-basedsystem development

The paper proposes a layered architectural framework to support agent based system development in a collaborative, multidisciplinary engineering setting. This architecture is viewed from two distinct perspectives. First, the environment must enable agent based modeling and simulation. Second, it should support concurrent (team oriented) engineering. The main focus is on the proposed layered architecture delineating various needs of an agent based system, thus supporting incremental specification design, implementation, and testing. In our discussions, we distinguish between performing agents and simulated agents. The former refers to agents as they are performing their tasks in real-world settings. The latter refers to agents that have their behavior simulated in a virtual environment. In these terms, the proposed framework is intended to form the basis for environments that support development of agents, in both performance and simulation modes, as well as in hybrid combination (both performing and simulated agents interacting at the same time). The proposed framework is a step toward realization of agent based systems under the umbrella of the simulation based acquisition (SBA) initiative of the US Department of Defense