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Effigis

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About Effigis

  • Rank
    Undergraduate

Contact Methods

  • Website URL
    http://www.effigis.com

Profile Information

  • Gender
    Not Telling
  • Location
    Canada
  • Interests
    GIS - Remote Sensing - Satellite Imagery - Geospatial Technology - Land Management - Geological Studies - Image Interpretation and Processing - GNSS
  1. Author: Daniel Macias Valadez, GNSS Analyst at Effigis Original text available here: http://bit.ly/1IYSbNY GPS, being the pioneer of all Global Navigation Satellite Systems (GNSS), is the only system that has remained fully operational for civilian use for more than two decades. The number of civilian applications has exploded in recent years and its popularity is undisputed. Other GNSS have had issues (GLONASS during the end of the 90s and the 00s) or are still incomplete (Galileo, BeiDou). This helps explain the fact that a large percentage of the population is familiar with the term “G
  2. Link: http://effigis.com/obtaining-millimetre-precision-using-satellite-sensors-science-or-fiction/ Precision is a rather sensitive subject in geomatics: talk about it to a surveyor or a GIS specialist, and you better be armed with the right arguments to convince him to change his measuring devices! It’s true that it does not easily spring to mind that the images captured by Earth observation satellites, nowadays with submetric spatial resolution at best, can produce displacement measurements with a precision measured in centimetres or millimetres, as the experts claim. But what exactly d
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