Precision Farming & Global Positioning Essentials

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Across
  1. 3. European satellite navigation system. GNSS, Control, space and user are the three main component of.
  2. 7. Electronic charged layer affecting GNSS signals.
  3. 9. The acronym for Graphical User Interface.
  4. 11. Both moving and stationary GPS units need to simultaneously track this set of objects in space.
  5. 13. This type of data storage in GIS uses a grid format.
  6. 16. Software which is used for analyzing and making maps from location-based data.
  7. 17. Type of data with less accurate orbital information.
  8. 20. Part of GNSS responsible for satellite management and data correction.
  9. 21. These receivers use carrier- phase tracking methods to provide centimeter accuracy for surveying, topography mapping and automated steering.
  10. 22. A measure indicating how various errors (Ionospheric, tropospheric, clock, and multipath) impact the overall accuracy of a GPS reading. Antenna, It should be installed at highest position, so it does not face multipath type errors.
Down
  1. 1. It should be installed their where we can easily see it and operate it.
  2. 2. Increased GPS accuracy using differential correction.
  3. 4. A Coordinate used to specify north-south position.
  4. 5. It is in space providing location signals.
  5. 6. A method in GIS that uses vertices and segments to create points, lines and polygons to represent objects.
  6. 8. station, This stationary part of a GPS system knows its own precise location, where the satellites are, and can figure out the exact distance to them. WGS84, Global position model used by GPS.
  7. 9. A system that helps to find exact locations in the world.
  8. 10. Mask, A setting in a receiver that blocks incoming signals from low in the sky to lessen certain errors.
  9. 12. The shape of the Earth used in GPS.
  10. 14. Attenuation, The weakening of a signal as it travels through barriers.
  11. 15. Error due to signal reflection.
  12. 18. Three satellites are needed, but a fourth is used to correct for correcting which errors. Trilateration, Finding location by measuring distances.
  13. 19. The measure of strength of the desired signal relative to the background noise.