探索将万维网地理信息系统(Web Geographic Information System,WebGIS)技术引入数字无线电广播发射覆盖分析领域,重点研究数据处理、平台搭建、模型构建及可视化分析等关键技术环节,并探讨覆盖优化调整的策略与方法。通过构建高精度数...探索将万维网地理信息系统(Web Geographic Information System,WebGIS)技术引入数字无线电广播发射覆盖分析领域,重点研究数据处理、平台搭建、模型构建及可视化分析等关键技术环节,并探讨覆盖优化调整的策略与方法。通过构建高精度数据集、搭建高效WebGIS平台、改进传播模型、开发可视化分析工具等手段,力图为无线电广播网络的精细化规划和智能化管理提供新的思路和方法。展开更多
确保无线电波的质量和安全播出是广播电视行业的基本要求,依赖无线发射台站的高效管理。传统的基于客户端的台站管理系统因其高成本、低效率等缺点逐渐不能满足当前的需求。因此,提出基于WebGIS(Web Geographic Information System)的...确保无线电波的质量和安全播出是广播电视行业的基本要求,依赖无线发射台站的高效管理。传统的基于客户端的台站管理系统因其高成本、低效率等缺点逐渐不能满足当前的需求。因此,提出基于WebGIS(Web Geographic Information System)的广播电视无线发射台站管理系统,旨在提升广播电视无线发射台站的管理能力。首先阐述系统特点,其次设计系统的总体结构,分析系统的主要功能模块,最后研究各功能模块的实现。展开更多
To solve the problem of chaining distributed geographic information Web services （GI Web services）, this paper provides an ontology-based method. With this method, semantic service description can be achieved by sem...To solve the problem of chaining distributed geographic information Web services （GI Web services）, this paper provides an ontology-based method. With this method, semantic service description can be achieved by semantic annotation of the elements in a Web service description language（WSDL） document with concepts of geographic ontology, and then a common under-standing about service semantics between customers and providers of Web services is built. Based on the decomposition and formalization of customer requirements, the discovery, composition and execution of GI Web services are explained in detail, and then a chaining of GI Web services is built and used to achieve the customer＇s requirement. Finally, an example based on Web ontology language for service （OWL-S） is provided for testing the feasibility of this method.展开更多
网络地理信息系统(Web Geographic Information Syste,WebGIS)具有数据来源广泛、维护方便、良好的扩展性等特点,能实现数据浏览、查询、分析等功能,在推进水利信息化建设方面具有独特优势。文章实现了一个基于开源MapServer和OpenLayer...网络地理信息系统(Web Geographic Information Syste,WebGIS)具有数据来源广泛、维护方便、良好的扩展性等特点,能实现数据浏览、查询、分析等功能,在推进水利信息化建设方面具有独特优势。文章实现了一个基于开源MapServer和OpenLayers的空间信息发布系统的显示优化方法,通过配置Mapfile可实现对平台电子地图发布的图层显示效果优化。展开更多
The MARGov Project consisted in strengthening the interaction among the Professor Luiz Saldanha Marine Park stakeholders, and to collaboratively construct, with social and institutional actors, a governance model for ...The MARGov Project consisted in strengthening the interaction among the Professor Luiz Saldanha Marine Park stakeholders, and to collaboratively construct, with social and institutional actors, a governance model for the Marine Park, located in the municipality of Sesimbra （Portugal）. To pursue this goal, a PPGIS （public participation geographic information system） was developed, allowing the interaction, discussion and public participation of the stakeholders and actors involved. This PPGIS emerged as a crowdsourcing tool, with the purpose of assisting the georeferenced contributes from the local users of the Marine Park, regarding several relevant subjects, such as pollution, economic activities, opportunities and threats to the Marine Park, providing visual, analytical, and demonstrative qualities.展开更多
文摘探索将万维网地理信息系统(Web Geographic Information System,WebGIS)技术引入数字无线电广播发射覆盖分析领域,重点研究数据处理、平台搭建、模型构建及可视化分析等关键技术环节,并探讨覆盖优化调整的策略与方法。通过构建高精度数据集、搭建高效WebGIS平台、改进传播模型、开发可视化分析工具等手段,力图为无线电广播网络的精细化规划和智能化管理提供新的思路和方法。
文摘确保无线电波的质量和安全播出是广播电视行业的基本要求,依赖无线发射台站的高效管理。传统的基于客户端的台站管理系统因其高成本、低效率等缺点逐渐不能满足当前的需求。因此,提出基于WebGIS(Web Geographic Information System)的广播电视无线发射台站管理系统,旨在提升广播电视无线发射台站的管理能力。首先阐述系统特点,其次设计系统的总体结构,分析系统的主要功能模块,最后研究各功能模块的实现。
基金the National Natural Science Fundation ofChina (60774041)
文摘To solve the problem of chaining distributed geographic information Web services （GI Web services）, this paper provides an ontology-based method. With this method, semantic service description can be achieved by semantic annotation of the elements in a Web service description language（WSDL） document with concepts of geographic ontology, and then a common under-standing about service semantics between customers and providers of Web services is built. Based on the decomposition and formalization of customer requirements, the discovery, composition and execution of GI Web services are explained in detail, and then a chaining of GI Web services is built and used to achieve the customer＇s requirement. Finally, an example based on Web ontology language for service （OWL-S） is provided for testing the feasibility of this method.
文摘网络地理信息系统(Web Geographic Information Syste,WebGIS)具有数据来源广泛、维护方便、良好的扩展性等特点,能实现数据浏览、查询、分析等功能,在推进水利信息化建设方面具有独特优势。文章实现了一个基于开源MapServer和OpenLayers的空间信息发布系统的显示优化方法,通过配置Mapfile可实现对平台电子地图发布的图层显示效果优化。
文摘The MARGov Project consisted in strengthening the interaction among the Professor Luiz Saldanha Marine Park stakeholders, and to collaboratively construct, with social and institutional actors, a governance model for the Marine Park, located in the municipality of Sesimbra （Portugal）. To pursue this goal, a PPGIS （public participation geographic information system） was developed, allowing the interaction, discussion and public participation of the stakeholders and actors involved. This PPGIS emerged as a crowdsourcing tool, with the purpose of assisting the georeferenced contributes from the local users of the Marine Park, regarding several relevant subjects, such as pollution, economic activities, opportunities and threats to the Marine Park, providing visual, analytical, and demonstrative qualities.
