Educational Record System Study And Applications Based On HLA

The data acquisition and analysis system design is a complex systems engi neering and management technology, computer network technology, software and hardware technology, database technology, mathematical algorithms, such as the combination, They believed that with the continuous development of new technologies, more reasonable and more intelligent data acquisition and analysi system will emerge, the data acquisition and analysis will increasingly controlled and mature.According to the different needs of the IP network for data acquisition and analysis techniques often used in different ways.At present, domestic and foreign, are used mainly for data acquisition meth ods are two: active and passive detection detection. Below them were the simp le description:1. Probing: Using PING, TRACEROUTE and similar tools, the purpose of sele cting a suitable site, sending ICMP packets or UDP packet through the aim poin t response to get some of the information network. For example, by PING, can be network latency, packet loss rate, and other information. The advantage of this method is flexible, convenient, use simple equipment, for example, only be completed by the use of PC-detection work. Shortcomings will increase network traffic. Performance monitoring and analysis, network topology, etc. is generally used to detect active detection.2. Passive detection: passive detection, the use of surveillance equipment to detect traffic flow through it. These devices can be dedicated, and can also be embedded in other devices (such as routers, firewalls, switches, and host) time. Measurement software or system cyclical polling passive monitoring equip ment and to collect information in order to judge the performance of the netwo rk and the state. Passive measurement method has the advantage of the meas urements on the network to increase the flow of small measure is the real flow on the network. Shortcomings is not enough flexibility, and sometimes need to switch or router on additional hardware and software for flow records. Data Acq uisition general use passive detection method. In this paper, the design of the data acquisition and analysis system is the use of passive measurement.Based on the original research data packets capture technology, Ethernet and TCP / IP on the basis of principle, the full use of today's advanced C + + and Socket programming such as the development of a technology-based HLA (High Level Architecture), simulation, real-time and Efficient, scalable, quality and cheap data acquisition and analysis system.Ensure that the network of data collection efficiency and reliability, while supporting automatic network informati on acquisition,Data Acquisition and Analysis System of Electronic Warfare System Simulati on control and laboratory evaluation of the unit part of, Mission: to complete network simulation, network operations systems of data acquisition, recording, and the simulation shows that after the end of data analysis, supporting users of the participating laboratory equipment operations, functions, performance, as a laboratory confrontation Evaluation of preparation. Data acquisition and analys is system has a wide range of applications.The whole thesis is divided into five major parts:Chapter 1 Introduction, introduced a system of background, significance and realization of this organization; Chapter 2 introduces this is a technical descripti on of the relevant system, which mainly includes VC++, the system is in its de velopment of the platform; Oracle database, a database system; Details on the working principle of Ethernet: Ethernet is one of the principle of broadcasting technology, which is a HUB from any port or a packet, it broadcast this packet to all other ports, HUB does not remember which one MAC address of a port which corresponds .In the HUB to the LAN port on the basis of information pac kets requested by the implementation of the functions of the corresponding acti on, which is above the network layer from the control of the HUB does not dea I with these elements, it is only responsible for the receipt from a port on the Ethernet packet radio to all other ports(Here the so-called broadcasting, refers to the HUB Ethernet packets sent to all other ports, the packet does not mean HUB changes to the broadcasting package). Use of Broadcasting Network is the way to achieve the original data packet capture the necessary conditions. TCP/ IP protocol, TCP protocol, UDP protocol, the system is mainly used for network protocols, some of the socket must be done, including TCP protocol is an impor tant place, it introduced its more detailed. A brief introduction of the software design patterns, how to choose and how to use design software design patterns; Chapter 3 on the function of the system, then the architecture of the system was introduced. The entire system design, mainly on the basis of common UML software processes on the system for the analysis and design of the system wasgiven to the use case diagram of the entire system, given the need to use various types of plans, and gives the corresponding explanation, the flow chart is given to express how the system is. On the system, the core part of a prese ntation and analysis, and the system presents the main interface display map; The data acquisition system of the main functions of the following modules: Function 1: data acquisition functions - can be collected simulation network (or network operations systems), all the data. Provide filtration conditions, acquisiti on concern simulation backbone data collection requirements specified on the identification, such as electronic countermeasures integrated console control command information, the parameters of the state interactive simulator informa tion, data information. Provide filtration conditions, acquisition of concern to the combat system online data collection requirements specified on the identificatio n, such as simulators and external interfaces integrated electronic countermeas ures system prototype is the interaction between the information. 2 functions: data storage - the real-time simulation run-time data collected by electronic wa rfare simulation stored in the database. Function 3: Data Import and Export function - to a certain formats such as text, data sheets, format data import, export, interactive data to share. Function 4: text analytic function - reported to the interface in accordance with the relevant requirements of the agreement on the text of analytical and be shown in the table. Function 5: database mana gement capabilities, providing for electronic warfare simulation database. Chapt er IV summarizes the characteristics of the systems and inadequate.This paper focused on the design of the system design process and several modules are designed and realized. System processes, in accordance with the process of UML analysis and design respectively of the whole system: Use case, it describes the function of the system needs and demand analysis of the vario us stages of development; Class Diagram and object graph shows the structure of the system, reduce the complexity of the issues, and describes the type and category of the relationship between class and class and the interface between; Timing diagrams to the system dynamics modeling, describes the interaction be tween the object and contains information on the transfer.