通信系统

On Implementation of the system, communication programs ofcomputer protection and ammeter is given in details.

在系统实现中，论文详细给出了微机保护装置和智能电度表与监控系统通信程序的开发细节。

Therefore, we apply the distributed monitor and control network technology based on OMRON PLC to the mine hoist"s back-up protection control system, working-condition monitor system, analog data acquisition data processing system. And applying the HOST Link and the PLC Link communication technology, we realize the following functions, the real-time monitor and control the hoist"s running state and running speed on line, real-time dynamic display, unified management by computer.

为此我们把所研究的由OMRON公司的PLC组成的集散测控网络技术，实际应用到矿井提升机的后备保护控制系统和提升机的工况检测、模拟量的数据采集与处理系统之中，并且应用PLC网络中的HOST Link和PLC Link通信技术，具体实现了对提升容器的运行状态、运行速度的在线实时监控和动态显示以及计算机的统一管理。

Finally, applications of the anomalous propagation of microwave in tropospheric ducts are discussed: in connection with concrete radar parameters, effects of ducts on radar range and detection performance are discussed, the results obtained are of great value for the overall design of radar systems; by use of the interference standards of ITU-R, the co-ordination area of satellite earth-station under tropospheric ducts environment is studied ; by explaining the relationship between evaporation duct and advection fog, a new way to forecast sea advection fog from evaporation duct is provided.

最后讨论了对流层大气波导环境下电波异常传播特性的应用：结合具体的雷达系统参数，模拟计算了大气波导对雷达作用距离及发现概率的影响，对雷达系统的总体设计具有重要的参考价值；对表面大气波导环境下的卫星地球站通信协调区域进行了确定，从理论上很好地给出了协调距离量级的概念，为卫星地球站与地面微波站之间的协调提供了依据和参考；分析了利用海面蒸发波导来快速预测平流海雾的新方法，完善了平流海雾的预报方法，对海上安全作业和生产具有重要的意义。

The Argosy Technologies system, known as R-AT-MM measuring system, delivers a total solution including high accuracy data acquisition, accumulation, processing and communication.

被称为R-AT-MM测量系统的Argosy技术系统，提供了一个整体解决方案，包括高精度数据采集、积累、处理和通信。

Simultaneously, the system also has with the computer asynchronous serial communication interface based on the programmable logic device CPLD.

系统包括模拟开关、测量放大器、AD转换器、CPLD中心逻辑控制器、掉电数据保存单元，系统实现了通过CPLD编程完成与计算机串口间异步串行通信功能。

Recent progress in radio prototype has extended the horizons of radio technology by liberating chronics dependence on hard-wired characteristics including frequency band, channel bandwidth, and channel coding. These efforts have led us to the feasibility of dynamically programmable receivers system of software radio.

软件无线电系统的硬件结构与功能相对独立，这样就可以基于相对通用的硬件平台，通过软件实现不同的通信功能，并可对工作频率、系统频带、调制方式等进行编程控制，系统的灵活性大大增加。

The harbor monitor system in the dissertation can be seen as a vessel transport management system employing comprehensively Galileo Satellite Position technology,ECDIS and modern satellite communication technology.

本论文所提出的港口船舶航行监管系统基于欧洲Galileo卫星定位系统，综合利用Galileo卫星定位技术、电子海图技术、以及现代卫星通信技术的系统。

Utilizing Chua's circuit, a drive-response chaotic synchronization system is constructed, by means of imitation, it can be concluded that this synchronization system possesses to a certainly stability、resisting-disturbance, and so on;Based on its system and by means of imitation, the characteristic of the chaotic synchronization self-maintenance is put forward, and imitation results are also presented.

介绍了Chua电路及其特性，给出了实现非线性电阻的一种电路；利用Chua电路构造出一种驱动-响应混沌同步系统，通过仿真得出此同步系统具有一定的鲁棒性、抗干扰等特性；根据此同步系统，仿真发现混沌同步具有自保持特性，并给出了仿真结果，这一在混沌领域的首次发现为混沌在保密通信的实际应用提供了依据。

The software not only displays an operating map of the railcar system but also simulates its physical and logical features including system layout, driving control, data communication, management, services and failure handling, etc.

所完成的软件不仅要显示轨道交通系统的运行图，而且要尽量逼真地模拟其物理状态和逻辑状态，从系统布局、行驶控制、数据通信、运营服务、故障处理等多方面来体现一个真实系统的实际状况。

It is CDMA of ／ of system of geographical information of fixed position of satellite of GPS whole world, GIS, GPRS the unifinication system of wireless communication technology and Internet technology, also be home over-distance is apart from between car of passenger transport of the first implementation and fixed target and management center forever broadband real time is online the super intelligence that with real time wireless image transmits runs a system.

它是GPS全球卫星定位、GIS地理信息系统、GPRS／CDMA无线通信技术和Internet技术的一体化系统，也是国内第一个实现客运车辆及固定目标与治理中心之间超远距离永远宽带实时在线和实时无线图像传输的超级智能治理系统。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。