經濟增長伴隨的城市環境問題已經成為全球普遍關注的問題。如何有效的認識、預測、控制城市環境污染問題，以及如何最大程度降低環境污染帶來的危害成為全社會共同面對的課題。城市社區作為人們日常生活和活動的場所，環境問題更引起社會的關注。因此如何維持一個環境可持續社區更成為一個焦點問題。 / 地理資訊系統對於實現環境可持續發展起到非常重要的作用。然而現實世界中的環境與地理過程是動態的、不斷變化的，傳統的二維、三維地理資訊僅表達地理場景的某一時刻，加上其以空間資料為核心的特徵約束了自身的能力與應用範圍。因此，這樣的地理資訊系統並不能很好的體現和表達當今快節奏的、不斷變化的現實世界，迫切需要新類型、新來源的地理資訊，新方式的分享方式來為人們提供將動態的，即時的資訊有機融合的新功能。以資料庫、模型庫為核心的虛擬地理環境在一定程度上突破了傳統地理資訊系統存在的不足，為研究和認識環境問題提供新的支撐，它具有再現過去和預測未來的雙重功能。同時，感測器技術的發展徹底改變了地理空間資訊的收集方式。地學感測器網路為我們提供了一個在地理環境中表現時間要素的機會。通過現實世界中無處不在的感測器可以捕獲空間物件與地理現象的演變過程，實現實時、動態地監測地理過程。 / 本研究提出將地學感測器網路與虛擬地理環境融合在一個三維線上地學視覺化與模擬平臺下，利用感測器資料的即時性，運用虛擬地理環境的基本理論與方法，構建一個跨越虛擬與現實的社區環境資訊感知平臺。本研究將這個平臺定義為實時動態的虛擬地理環境。 / 本研究以環境監測與模擬為背景，構建實時動態虛擬地理環境的概念框架以及原型系統，為環境可持續社區發展提供深度感知與管理方向。具體的研究內容包括具體內容如下：1）探討實時動態虛擬地理環境的概念框架、研究內容和基礎理論；2）構建多感測器實現的實時動態的虛擬地理環境原型系統框架；3）構建三維線上虛擬地理環境平臺；4）基於開放地理空間資訊聯盟的感測網服務與虛擬地理環境的集成；5）感測器資料在實時動態虛擬地理環境中的表達與模擬。 / 本文首次提出現時的虛擬地理環境。創新點體現在：1）初步提出實時動態虛擬地理環境的理論與基本原理，比較系統地闡述了實時動態虛擬地理環境的概念和基本理論；2）設計了多感測器實現的實時動態虛擬地理環境框架與實現方法；3）開發了一個適用於實時動態虛擬地理環境的可定位可擕式環境感測系統；4）設計了基於事件的環境監測與報警；5）運用新的對話模式實現環境監測與資料共用；6）提出了一個基於移動感測資料的多級處理方法，以滿足地理過程模擬。 / Urban environmental issue, which is closely relative to the economic growth, has become a global issue of common concern. How to better understand, predict and control urban environmental pollution, and how to minimize the hazard it causes, is a concern of the whole society and a new subject we must face. Environmental issues of urban communities, which are the major places holding our daily life and activities, attract more attentions. Therefore, how to maintain an environmentally sustainable community is an issue of critical importance. / It is quite necessary to construct a comprehensive and systematic platform to support the management of urban environment. GIS is a platform to achieve the goals since it reviews fundamental subjects in spatially-oriented fields for understanding, integrating, and modeling the nature and human society. In the past, the data that fueled GIS was typically created to represent the state of the geo-scape at a specific moment in time. And this kind of data has been proven to be very valuable for numerous GIS applications and analysis, even the "current" snapshot falls out of sync with the real world quickly. However, the real world especially the environment is in flux and geographic processes are dynamic, yet the traditional 2D/3D GIS models represent only a single instance of the scene, namely the moment when the images used to create them were actually collected. The "current" snapshot cannot well reflect today’s fast-paced, ever-changing world. An emergency of new types and sources of geographic content, and new ways of sharing them is needed to provide people with exciting new capabilities to incorporate dynamic, real-time information. / With the two cores of database and model database, Virtual Geographic Environment (VGE) breaks the limitations of traditional GIS, which provide new support to study and understanding of environmental issues. VGE can reproduce the past history and predict the future development. Meanwhile, advances in sensor technology and deployment strategies are revolutionizing the way that geospatial information is collected and analyzed. Geosensor networks provide us an opportunity to incorporate the temporal aspect into the geographic environment. With the numerous sensors distributed in the real environment, the evolution of spatial objects or geographic process can be captured, and real-time dynamic monitoring and analyzing of geographic phenomenon will be realized. / This thesis is proposed to incorporate geosensor networks with VGE in an online 3D geoscience visualization and simulation platform, to use real-time sensor data and the basic theory and methods of VGE, then to build a community environmental information perception platform crossing the reality and virtuality. In this study, this platform is defined as Live Virtual Geographic Environment. / This thesis takes environmental monitoring and simulation as the background, aims to build a conceptual framework and a prototype of Live Virtual Geographic Environment to point out the way of environmentally sustainable community perception and management. The work of this thesis can be summarized as follows: 1) investigate the conceptual framework, research content and basic theory of Live VGE; 2) build a system framework of multi-sensor enabled Live VGE prototype; 3) build an online 3D VGE platform; 4) incorporates sensor web services with VGE based on the OGC standards; 5) sensor data representation and simulations in Live VGE. / In this thesis, a Live VGE is proposed. The contributions of this research can be drawn as follows: 1) initially proposed Live VGE theory and rationale, systematically expounded Live VGE concepts and related theories; 2) designed the framework and implement approach of multi-sensor enabled Live VGE; 3) developed a locatable and portable environment sensing system for Live VGE; 4) event-based environmental monitoring and alert; 5) a new interaction method to achieve environmental monitoring and data sharing; 6) proposed a multi-stage method for mobile sensing data to meet the demand of geographical process simulation. / Detailed summary in vernacular field only. / Detailed summary in vernacular field only. / Detailed summary in vernacular field only. / Detailed summary in vernacular field only. / Detailed summary in vernacular field only. / Che, Weitao. / Thesis (Ph.D.) Chinese University of Hong Kong, 2013. / Includes bibliographical references (leaves 155-162). / Abstracts also in Chinese.
| Identifer | oai:union.ndltd.org:cuhk.edu.hk/oai:cuhk-dr:cuhk_1077691 |
| Date | January 2013 |
| Contributors | Che, Weitao (author.), Lin, Hui , 1954- (thesis advisor.), Chinese University of Hong Kong Graduate School. Division of Geography and Resource Management, (degree granting institution.) |
| Source Sets | The Chinese University of Hong Kong |
| Language | English, Chinese |
| Detected Language | English |
| Type | Text, bibliography, text |
| Format | electronic resource, electronic resource, remote, 1 online resource (xxi, 162 leaves) : illustrations (chiefly color), maps (chiefly color), computer, online resource |
| Coverage | China, Hong Kong |
| Rights | Use of this resource is governed by the terms and conditions of the Creative Commons “Attribution-NonCommercial-NoDerivatives 4.0 International” License (http://creativecommons.org/licenses/by-nc-nd/4.0/) |
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