卫星系统

The network-torpedo can realize real time identification, pursuit and attack on target with the information obtained effectively from battlefield at any time. We put emphasis on the functions and principles of several key technologies, including acoustic communication system, satellite navigation location system and power system. Finally, we propose some applied ideas for the network-torpedo.

展示了网络鱼雷以其能随时高效获取战场环境信息来实现对目标的实时识别、跟踪和攻击，并着重从功能及原理上对水声通信系统、卫星导航定位系统及动力系统这几项关键技术进行了较详细的论述，最后提出了网络鱼雷的作战应用设想，展望了其应用前景。

GTE is located in PANYU GUANGZHOU where has a convenient traffic and beautiful surroundings, covering 55000 square meters area,Coagent has 500 employees among whom there are 135 professional technicians,"FORMAN" of GTE become a famous brand of "Built-in GPS+DVD navigation system","FORMAN" products, including car system of DVD+GPS, GPS+PMP,AV and Audio, have been made rapid progress in car component ,car market and oversea export market, and made great success in becoming competitive car DVD+GPS+TV system products of many SUV car and sedan manufacturers and GTE has obtained good praise of the native and oversea car manufacturers.

广州市国通汽车有限公司，创立于1994年，座落于交通便利、环境优美的广州市番禺区，占地面积近55000平方米，精英汇集，技术力量雄厚，是专业研发、生产和销售车载和便携GPS/DVD全球卫星定位导航多媒体影音系统、汽车电子智能控制系统等电子产品的高科技企业，旗下拥有"Forman大众领航"品牌，在汽车导航影音系统以及便携式汽车导航产品等领域引领着行业的前沿，国通优质的汽车电子产品在汽车售后市场、海外出口和整车配套三大块市场均取得了长足的发展。

These products are mainly used in civil mobile communication system , satellite communication system and wideband wireless receiving system.

该产品主要用于民用移动通讯系统，卫星通讯系统及宽带无线接入系统。

Global position system can revise the cumulative error of dead reckoning navigation system,such as strapdown inertial navigation system and Doppler navigation ,with its ability of accurate navigation and positioning when it is applied to the navigation system of autonomous underwater vehicle.

全球卫星定位系统应用于远程自主水下航行器导航系统中，可利用其精密导航和定位能力对航位推算导航系统如惯导和多普勒导航的累积误差进行精密校正。

But the majority system concentrates the function to the satellite positioning, the track monitoring, automatically reports to the police, the correspondence dispatch, the geography navigation and so on, few provides the intellectualization and the decision-making support,which is the indispensable part to transit the management information system at the present stage to the decision-making support system.

但大多数系统将功能集中于卫星定位、跟踪监控、自动报警、通信调度、地理导航等，对于押钞车线路提供智能化、决策化支持的却很少，这正是现阶段管理信息系统过渡到决策支持系统所或缺的一部分。

Firstly this paper introduces some basic information about the determination of satellite orbit, including time systems, coordinate systems, the definition of these systems and the transfer between different systems.

文中首先介绍了卫星定轨的一些基础知识，主要包括时间系统、坐标系统的定义和不同系统之间的转换关系。

And this system is portableIts a hope to provide other systems which belong to the project of satellite testing data center with support founded on this system, especially supplied data access environment to relative system that distills data.

而且在系统可移植性方面提供了较为有力的支持。希望通过本系统的实现，为卫星测试数据中心项目中其他系统提供必要的支持，尤其是为相关的数据提取系统提供较好的数据访问环境。

By combining a case analysis and experiences and lessons from the fire prevention work, the author put forward the development direction and the key improvement of forest fire prevention technology as follows: keep on the studies on weather and situation of forest fire and the short-term, medium-term and long-term fire forecasting, establishing the countrywide forest fire forecasting system step by step, enhancing the biologic fire prevention construction based on forest- prevention web and system, improving the ability of the initial fire obstruction, expanding the forest fire plan, strengthening the management of combustible substances, completing the national satellite network for forest-fire monitoring as soon as possible, speeding up the construction of computer assistance decision system, GIS forest resources geography information system and the GPS world fixed position system, strengthening the fire prevention communication and the extinguishing fire with aviation airplane and chemistry, implementing the modernization of fire machine tool.

结合实例分析及我国森林防火工作的经验和教训，提出了未来我国森林防火技术的发展方向和改进重点：继续努力开展火险天气、火险形势的科学研究和短期、中长期火险预测预报工作，逐步建立全国林火预报系统；加强以防火林带网络和体系建设为主的生物防火建设，提高对初发火的阻隔能力；推广计划火烧，加强可燃物管理；尽快完成全国卫星林火监测网络建设；加快微机辅助决策系统、GIS森林资源地理信息系统和GPS全球定位系统建设的步伐；加强防火通讯；加强航空飞机灭火和化学灭火的力度；实现扑火机具现代化等。

This system ofcompatible electromagnetism of frequency spectrum has someimportant functions listed as follows:(1) Analysis disturbance of the same or adjacent frequencies (2) Analysis of performance of radio link (3) Analysis of intermodulation (4) Automatic selection of frequency(auxiliary assignment of frequency)(5) Prediction of region of radio field intensity (6) Harmonization of frequency border (7) Analysis and design the system of microwave and satellite earth station.(8) Generate photographs This paper realizes the function of harmonization analysis ofthe system of microwave and satellite earth station. The concretework includes:(1) Based on the propagation model of radio wave,computing the absorption loss of atmosphere of microwavecommunication system and its fading, simulating the receivingvoltage and realizing the computation of disturbance andharmonization between microwave station and earth station.

频谱电磁兼容分析系统主要实现以下几个功能：⑴同、邻频干扰分析⑵无线链路性能分析⑶互调分析⑷频率自动选择⑸场强覆盖预测⑹边界协调⑺微波与卫星地球站系统设计和干扰协调分析⑻图形制作功能本文做为全省建设的电磁兼容分析系统的一部分，实现了微波站与地球站干扰协调分析这一功能，具体有：⑴以无线电波自由空间传播为模型，对微波通信系统的大气吸收损耗和衰落储备量进行了计算、对接收电平进行了模拟仿真，实现了微波- I -吉林大学硕士学位论文 Abstract站与地球站之间的干扰与协调计算。

The hotel facilities are all ready; advanced network system about computer reservation, check-in and financial management; sufficient cold-warm air-conditioning system; background musical system, satellite system, first class laundry equipment, direct distance dialing, fax, telex, broadband net, and guest room meal, drinking,Train and plane ticket booking and entertainment serve.

酒店内设施设备齐全，有先进的电脑预订、入住登记及财务管理等管理网络系统，有足够的冷暖空调系统，背景音乐系统，卫星接收系统，一流的洗衣房设备及国际国内长途直拨电话，传真、电传、宽带上网、预订火车票、机票及客房、餐饮、娱乐服务等。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。