以三明市1:2000数字正射影像图(DOM) 数据制作为例, 介绍了全数字摄影测量技术制作DOM的工作流程及技术路线,并对DOM制作中的关键技术进行优化和改进,不仅保证了成果的质量,还极大的提高了工作效率,对传统DOM制作提供参考价值.

本文结合国土资源“一张图”核心数据库的建设要求,分析了三明市国土资源“一张图”的数据模型,构建了国土资源数据中心.采用“框架+插件”的设计模式,设计和开发了电子政务基础平台,并依托电子政务基础平台的基础框架和功能插件以及数据中心的数据服务,搭建了三明市国土资源综合管理平台,实现了国土资源的一体化、集成化管理.

通过对蓄电池日常维护的几个方面,包括蓄电池日常的维护工作、蓄电池的补充充电、蓄电池的充电控制、蓄电池的放电控制、蓄电池的容量试验等进行论述。阀控式密封电池在日常的维护中电池内部的情况看不见,只有通过各种技术手段对各种数据进行测量、分析,把分析的结果与电池的说明书和《中国联通通信网络运行维护规程》的要求进行比较得出正确判断,对不符和要求的电池进行不同的处理,达到电池正常运行,保证安全供电,延长电池使用寿命的目的。

对通信电源技术进行了概要阐述,分析了中小通信机房电源系统基本组成,结合实际提出了新形势下加强中小通信机房电源系统维护的对策建议。

In the details on the radar range and radar obstructing corner production principles and methods based on the analysis of CINRAD,the paper developed effective geographic range analysis system for CINRAD.The system could automatically draw radar range and obstructing corner,and give an effective analysis of the geographic range for candidate sites,in order to find the best candidate sites for convenience.

电视监控技术不断取得新的进展,基于网络的监控系统已成为当今电视监控的主流,以至于无论是何种规模或何种类型的电视监控系统,几乎都以该系统是否有网络接口和数字硬盘录像功能作为评判系统是否具备了先进性的依据。

对标管理作为工程造价寻找最佳管理标杆、引发新观点、激发创新活力的主动决策管理模式,通过在全行业、甚至更广阔的视野上寻找基准,借鉴先进典范经验、拉高自身标杆,进而实现自身的迅速发展,对提升通信企业工程项目的管理水平具有现实意义。本文通过研究对标管理,并将其运用至通信企业工程实际操作过程,达到树立标杆,合理把握和控制工程造价,节约投资成本的目的。

In the trend of the administrative information being distributed and networking,openness and integration have become the important conditions for the administrative works informatization.The distributed integration and sharing service of the administrative information is to integrate the data of different areas, and realized the unified access mode and management.According to the status of the fundamental geographic information of Fujian province,this paper makes a detailed analysis and explanation in terms of data integration,data sharing,and design and implementation of the thematic 3D GIS for government departments.

Combination of basic geographic information data,integration of distributed spatial data model based on fundamental geographic information service platform in three-dimensional environment was designed.It introduced the system architecture,explained the key technology and provides a specific ideas for government management and sharing of distributed resources.

Spatial Clustering is great affected by special entities.Most algorithms ignore the fact that spatial entities exist in the real world and could affect the result of clustering dramatically.In this paper, we explore the problem of clustering in the presence of spatial entities, and we provide an algorithm called CDC to solve it, which take into account both spatial entities constraint and spatial adjacent relationship.

通过分析数字线划图数据目录文件管理方式的缺点,提出了利用数据库管理数字线划图数据的思路.结合实际应用给出了数据库设计,采用AutoCAD+SQL Server模式开发了数字线划图管理系统,应用效果显著.

Parallel coordinates is the typical representatives in the data visualization.This article discusses the dimension constraint parallel coordinates on the basis of summarizing the fundamental principle of parallel coordinates visualization.DBSCAN cluster algorithm is developed,and the clustering result is visualized in parallel coordinates as the example of ocean monitor platform data.