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وبلاگ سنجش از دور و سیستم اطلاعات جغرافیایی دانشگاه تربیت مدرس تهران

وبلاگ سنجش از دور و سیستم اطلاعات جغرافیایی دانشگاه تربیت مدرس تهران
 
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  • GIS is a convergence of technological fields and traditional disciplines
  • GIS has been called an "enabling technology" because of the potential it offers for the wide variety of disciplines which must deal with spatial data
  • each related field provides some of the techniques which make up GIS
    • many of these related fields emphasize data collection - GIS brings them together by emphasizing integration, modeling and analysis
  • as the integrating field, GIS often claims to be the science of spatial information

Remote Sensing
 

  • images from space and the air are major source of geographical data
  • remote sensing includes techniques for data acquisition and processing anywhere on the globe at low cost, consistent update potential
  • many image analysis systems contain sophisticated analytical functions
  • interpreted data from a remote sensing system can be merged with other data layers in a GIS

Photogrammetry
 

  • using aerial photographs and techniques for making accurate measurements from them, photogrammetry is the source of most data on topography (ground surface elevations) used for input to GIS

Surveying
 

  • provides high quality data on positions of land boundaries, buildings, etc.

Geography
 

  • broadly concerned with understanding the world and man's place in it
  • long tradition in spatial analysis
  • provides techniques for conducting spatial analysis and a spatial perspective on research

 

Geodesy
 

  • source of high accuracy positional control for GIS

Statistics
 

  • many models built using GIS are statistical in nature, many statistical techniques used for analysis
  • statistics is important in understanding issues of error and uncertainty in GIS data

Operations Research
 

  • many applications of GIS require use of optimizing techniques for decision-making

Cartography
 

  • concerned with the display of spatial information
  • currently the main source of input data for GIS is maps
  • provides long tradition in the design of maps which is an important form of output from GIS
  • computer cartography (also called "digital cartography", "automated cartography") provides methods for digital


representation and manipulation of cartographic features and methods of visualization
 

 

Computer Science
 

  • computer-aided design (CAD) provides software, techniques for data input, display and visualization, representation, particularly in 3 dimensions
  • advances in computer graphics provide hardware, software for handling and displaying graphic objects, techniques of visualization
  • database management systems (DBMS) contribute methods for representing data in digital form, procedures for system design and handling large volumes of data, particularly access and update
  • artificial intelligence (AI) uses the computer to make choices based on available data in a way that is seen to emulate human intelligence and decision-making - computer can act as an "expert" in such functions as designing maps, generalizing map features
    • although GIS has yet to take full advantage of AI, AI already provides methods and techniques for system design

Mathematics
 

  • several branches of mathematics, especially geometry and graph theory, are used in GIS system design and analysis of spatial data

Civil Engineering
 

  • GIS has many applications in transportation, urban engineering

 


[ پنجشنبه 29 تیر 1391 ] [ 10:53 ق.ظ ] [ GIS & RS دانشگاه تربیت مدرس ]
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