發(fā)布時(shí)間：2019-02-16 10:26

【摘要】：現(xiàn)如今,數(shù)字城市已經(jīng)如火如荼的在全國各個(gè)省市開展起來,數(shù)字城市不僅僅推動(dòng)了城市信息化的建設(shè),更重要的是從根本上促進(jìn)越來越多的城市建立起自己的城市基礎(chǔ)地理信息數(shù)據(jù)庫,并以此作為數(shù)據(jù)基礎(chǔ)擴(kuò)展出地理信息公共平臺(tái)數(shù)據(jù)集,搭建起地理信息公共平臺(tái),為了保證地理信息公共平臺(tái)數(shù)據(jù)集的現(xiàn)勢性,很有必要對(duì)其進(jìn)行動(dòng)態(tài)的維護(hù)與更新。從我國目前的情況來看,地理信息公共平臺(tái)數(shù)據(jù)集的更新是基于城市基礎(chǔ)地理信息數(shù)據(jù)庫的更新而更新的,城市基礎(chǔ)地理信息獲取的周期和流程具有一定的標(biāo)準(zhǔn)規(guī)范,能夠較好的實(shí)現(xiàn)基礎(chǔ)地理信息的更新,基本能夠滿足公眾的應(yīng)用。但是隨著城市建設(shè)的加快,城市基礎(chǔ)地理信息的變化也越來越快,公眾對(duì)城市地理信息公共平臺(tái)數(shù)據(jù)的現(xiàn)勢性要求越來越高,常規(guī)的基礎(chǔ)地理信息更新技術(shù)因其時(shí)效性低明顯無法滿足用戶的需要,所以快速將新的城市基礎(chǔ)地理信息更新到城市地理信息公共平臺(tái)數(shù)據(jù)集并應(yīng)用于城市信息化建設(shè),很好的解決城市地理信息公共平臺(tái)數(shù)據(jù)集更新的時(shí)效性問題是本文的研究重點(diǎn)。通過分析國內(nèi)地理信息公共平臺(tái)數(shù)據(jù)集更新的弊端,并研究了國外先進(jìn)的地理信息在線更新技術(shù)及其涉及的關(guān)鍵技術(shù),旨在實(shí)現(xiàn)地理信息公共平臺(tái)數(shù)據(jù)集的在線更新,研究的內(nèi)容如下： (1)研究地理信息在線編輯的實(shí)現(xiàn)原理,并結(jié)合其作用和優(yōu)勢,確定了地理信息在線編輯的實(shí)現(xiàn)流程。 (2)研究目前幾種常見的時(shí)空數(shù)據(jù)模型,并加以分析比較,根據(jù)本文實(shí)際情況,提出了一種結(jié)合“連續(xù)快照”和“基態(tài)修正”的時(shí)空數(shù)據(jù)模型,解決了數(shù)據(jù)源存儲(chǔ)庫的時(shí)空模型設(shè)計(jì)。 (3)設(shè)計(jì)數(shù)據(jù)源存儲(chǔ)庫的架構(gòu),將數(shù)據(jù)源存儲(chǔ)庫劃分為現(xiàn)狀庫、歷史庫和中間庫,并闡述了三庫之間的關(guān)系。 (4)以地理信息的變更模式和區(qū)域更新的原則作為導(dǎo)向,結(jié)合三種數(shù)據(jù)源的實(shí)際情況,整理出針對(duì)三種數(shù)據(jù)源更新的思路,并提出對(duì)三種數(shù)據(jù)源的更新方法和歷史回溯的機(jī)制。通過對(duì)以上內(nèi)容的深入研究,提出地理信息在線編輯的設(shè)計(jì)流程,確定矢量存儲(chǔ)庫的整體設(shè)計(jì),提出針對(duì)三種數(shù)據(jù)源的更新方法和歷史回溯機(jī)制,并以此開發(fā)了地理信息在線更新系統(tǒng),驗(yàn)證了本文提出的地理信息在線更新方法的可行性。
[Abstract]:Now, the digital city has been in full swing in all provinces and cities throughout the country, digital city has not only promoted the construction of urban information, More importantly, it is essential to promote more and more cities to set up their own urban basic geographic information database, which can be used as the data basis to expand the geographic information public platform data set and build the geographical information public platform. In order to ensure the present situation of geographic information common platform data set, it is necessary to maintain and update it dynamically. According to the current situation in our country, the update of the data set of the public platform of geographic information is based on the update of the urban basic geographic information database, and the period and process of obtaining the urban basic geographic information has certain standard and standard. Can better realize the basic geographical information update, basically can satisfy the public application. However, with the acceleration of urban construction, the change of urban basic geographic information is becoming faster and faster, and the public demand for the data of public platform of urban geographic information is becoming higher and higher. Because the traditional basic geographic information updating technology can not meet the needs of the users obviously because of its low timeliness, the new urban basic geographic information is quickly updated to the urban geographic information public platform data set and applied to the urban information construction. It is the focus of this paper to solve the timeliness problem of updating urban geographic information public platform data set. By analyzing the disadvantages of updating the data set of the common geographic information platform in China, this paper studies the advanced online updating technology of geographical information and the key technologies involved in it, in order to realize the online updating of the data set of the common geographic information platform. The contents of the research are as follows: (1) the realization principle of online editing of geographic information is studied, and the realization flow of online editing of geographic information is determined by combining its function and advantage. (2) several common spatio-temporal data models are studied and compared. According to the actual situation of this paper, a spatio-temporal data model combining "continuous snapshot" and "ground state correction" is proposed. The design of spatiotemporal model of data source repository is solved. (3) Design the structure of the data source repository, divide the data source repository into the status quo library, the history library and the intermediate library, and expound the relationship between the three repositories. (4) taking the changing mode of geographical information and the principle of regional updating as the guidance, combining the actual situation of three kinds of data sources, the paper puts forward the idea of updating the three kinds of data sources. The updating method of three kinds of data sources and the mechanism of historical backtracking are put forward. Through the thorough research of the above contents, the design flow of online editing of geographic information is put forward, the overall design of vector repository is determined, and the updating method and historical backtracking mechanism for three kinds of data sources are proposed. The online update system of geographic information is developed, and the feasibility of the online updating method of geographical information proposed in this paper is verified.
【學(xué)位授予單位】：遼寧工程技術(shù)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：P208

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