spatial datum 中文意思是什麼
spatial datum
解釋
空間基準 空間測地系-
Geoid is the reference datum of spatial data collection, so how to ascertain the geoid, that of all over the world, that of one nation, or that of one zone, is always an nuclear task of surveying science but there is not the quick and automatic solution. the density of the required data of astronomical measurement, gravimeter survey and geodesic survey is not satisfied
大地水準面是空間測量數據外業採集所依據的參考基準面。確定全球、一個國家、一個地區的大地水準面的形狀始終是測繪科學的一項核心內容，一直未能有快速、簡潔、自動的解決方法。需要的天文測量、重力測量、大地測量等數據的密度無法滿足其需要。 -
Due to the development of gps, which is representative of spatial geodetic measure technology, and the satellite altimeter technology, it is possible to unify the local height datums in different countries ( or regions ) to the world height datum ( whd ). and the unification of height datums has been made in some countries
隨著以gps為代表的空間大地測量技術以及衛星測高技術的飛速發展，使得將各個國家或地區的局部高程基準統一為全球高程基準成為可能，並且在部分國家已經實現，因此將我國高程系統納入全球高程系統不僅具有理論意義，而且具有重要的現實意義。 -
Based on the theoretical research, the article studies from the side of micro analysis and macro analysis. ( 1 ) sets up the spatial assistant decision support system of the labor market of pudong new area and the comprehensive evaluates of labor market by using 3d model. ( 2 ) sets up the index system of our country labor market ; opening out the rule of the special difference of labor market by using much powerful datum, gis and esda technology ; regional division of the country labor market by using the technology of neural network technology
本文研究區域勞動力市場信息化採用了一系列科學先進的研究手段和方法，包括從定性到定量的綜合集成方法， g工s技術廣泛應用於區域勞動力市場空間分析、管理和信息服務， gis 、 esda和神經網路技術等綜合集成用於區域勞動力市場的知識發現，人口和經濟模型運用於區域勞動力市場的動態模擬和預測等。此外，還運用了區域研究和結構分析相結合、靜態分析和動態研究相結合等研究方法。 -
This paper does research on spatial data mining technology applied in environment regulation, and on technology integrated spatial data mining and spatial decision support system. the integrated model for environment regulation spatial decision support system based on spatial data mining was established ; spatial data mining intelligent engine was designed, which can choose algorithms intelligently in data mining. environment database, knowledge data base and model base were designed, which is based on the characteristic of environment datum in fujian coast
本文研究空間數據挖掘技術在環境調控中的應用和空間數據挖掘技術與空間決策支持系統的集成，提出了一種基於空間數據挖掘的環境調控空間決策支持系統模型；設計了空間數據挖掘智能引擎；根據福建省海岸帶環境數據的特點，對福建省海岸帶環境數據庫、知識庫與模型庫作了設計，最後開發了福建省海岸帶環境調控決策支持原型系統。 -
Based on the remote sensing pictures, relief map of wuhan city in different periods and other datum, aided with the investigation on waterfronts, the author tries to research the waterfront spatial system synthetically and present this paper in three sections : investigation, analysis and exploration
本文以不同時期武漢市主城區遙感影像及相應時期地形圖作為基礎資料，結合相關屬性資料及現場調查，對武漢市城市濱水景觀空間系統進行綜合研究，並按調查、分析與探索的順序進行論述。 -
The assimilation experimentation results indicate that after assimilating radar wind field of small spatial scale, mesoscale and small - scale precipitation prediction can be improved and mesoscale and small - scale information which ca n ' t appear by tradition datum can be gained, which is valuable to analyze the mesoscale and small - scale system structure ; the effect assimilating radar humidity field is n ' t obvious, which is perhaps correlation with precipitation types and assimilating time. the results also show that adding radar humidity field to initial condition at initial time can supply the gap of the regular data in reflecting the mesoscale and small - scale systems, strengthen the humidity in the initial field, and eventually help to improve precipitation. the experiment of assimilating radar wind field and radar humility field at the same time shows that vapor transportation and local vapor divergence play more significant role in causing excessively heavy rain than only high wet center
同化試驗結果表明：同化空間解析度很高的雷達風場后，能改善中小尺度降水的預報效果，並且能夠得到常規觀測資料所不能得到的中小尺度信息，對分析中小尺度系統結構具有重要意義；同化雷達濕度場效果不明顯，可能與降水類型和同化時刻有關；而直接在初始時刻加入雷達濕度場，補充了常規資料在反映中小尺度系統方面的不足，增強了初始場中的水汽，有利於降水量的增加；同時同化雷達風場和雷達濕度場的試驗表明，水汽的輸送和局地的水汽輻合對于產生特大暴雨的貢獻遠大於僅有高濕中心的貢獻。 -
It utilized advanced gis technology to manage regional agricultural resource information, build spatial and attribute databases, applied function of own spatial analyses and convenient making thematic picture of this system, realized dynamical show of correspondingly geographical position and regional agricultural resource information. and then this system had advantage in datum management, spatial analysis, graphic display
利用gis技術對區域農業資源信息進行管理，建立了空間和屬性數據庫，運用該系統特有的空間分析和方便的專題制圖功能，實現了區域農業資源信息數據與其相應的地理位置動態顯示，使該系統具有數據管理、空間分析和圖形顯示的優點。
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