GIS

Card Set Information

Author:
ichiban2008
ID:
170455
Filename:
GIS
Updated:
2012-09-12 14:02:56
Tags:
GIS
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Description:
Quiz 1
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  1. Whay are four sattelintes required to determine location?
    Three coordinates of spatial position plus time
  2. What are the two ways that GPS signals are encrypted?
    Purposefully degraded

    anti spoofing
  3. What international event prompted the US to make GPS navigation availagle to Civil Aviation?
    When the Korean Airline Flight 007 was shot down over Soviet Airspace
  4. What are the three segments of GPS architecture
    space, control, user segments
  5. The USAF tracks the satellites rom five monitoring sites. What are they and why are they tracked?
    • ascersion island
    • diego crarcia
    • Kwajalein
    • Hawaii
    • Colorado

    • orbital prediction¬†
    • health indicators
  6. What are the five sources of errors with GPS signals?
    • errors in clocks and satellites
    • accuracy
    • delays in the ionsphere and troposphere
    • multipath and receiver noise
    • degredation of signal
  7. What is WAAS?
    Wide Area Augmentation System

    laps augmentations to meet needs of civil aviation

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