GeoTechnology 2

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GeoTechnology 2
2012-09-25 19:05:04
Geo Tech

Exam 1
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  1. Distortion
    angle, shape, distance, direction projection, coordinate systems
  2. Scale
    • Gives a reference for size, distance so the user can
    • tell what is going on within the map 
    • Resolution-High resolution means we're looking at things close-up. Low resolution
  3. Scale in terms of time
  4. Things that are a function of space and time
    – What are some examples that you can think of where space and time may need to be considered within a GIS to conduct an analysis. 
  5. Types of Geotechnology
    • Computer Cartography 
    • Global Positioning System (GPS)
    • Geographic Information System (GIS)
    • Remote Sensing
    • Custom Modeling
  6. Computer Cartography
    • Study and practice of making maps
    • Combines: science, aesthetics, techniques
    • What am I trying to Convey?
  7. Geographic Information System
    • System designed to capture, store, manipulate, analyze, manage, and present all types of geographically referenced data.
    • Components: Hardware, software, data, people, methods.
    • Power lies in ability of the system itself to overlay multiple layers of both manually and in an automated fashion to assess patterns across the landscape.
  8. Remote Sensing
    Acquisition of info about an object or phenomenon, without making physical contact with the object.

    • THe term generally refers to the use of aerial sensor technologies used to classify objects on the Earth's Surface
    • Use of technology for other planetary bodies.
  9. How does a GPS work?
    Uses a constellation of between 24 and 32 Medium Earth Orbit satellites
  10.  Originally developed by the United States Department of Defense 
  11. GPS Space Segment
    Number of satellites in view from a given point on the Earth's surface changes with time
  12. Control Segment
    • Ground stations monitor satellite position and monitor error
    • Information transmitted back to satellites from ground stations
  13. Map distortion caused by a projection
    • Areas
    • Angles
    • Shape
    • Distances
    • Directions