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Differential Correction Farming - Agriculture & Science Directory

• Coast Guard Navigation Center
  
  Maintained for the purpose of disseminating navigational status information for the GPS, DGPS, and LORAN radio navigation systems. Coverage plot map, DGPS status, discusses nationwide expansion, outages, and general information relevant to precision ...
  http://www.navcen.uscg.gov/

• The Omni Star
  
  OmniSTAR is a widearea differential GPS service, using satellite broadcast techniques. For the submeter service, data from many widelyspaced Reference Stations is used in a proprietary multisite solution over most land areas worldwide. The high accur ...
  http://www.omnistar.com/