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18-Geom-A3 Geodesy and Positioning: December 2017

Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)

  1. Question 1 Coordinate Systems, Reference Frames and Datums
  2. Question 2 Gravity Field and Geoid
  3. Question 3 Height Systems — CGVD28 vs CGVD2013
  4. Question 4 Map Projections — Elevation, Scale and Grid Factors; MTM
  5. Question 5 Satellite Positioning — WGS84, ITRF and GPS-PPP
  6. Question 6 Network Post-analysis — Confidence Ellipses and Ellipsoids
  7. Question 7 Brief Definitions

Start with Question 1 →

Paper format: National Exams, December 2017 — 3 hours, closed book (approved Casio/Sharp calculators only). SEVEN numbered questions; six constitute a complete paper and each is of equal value (20 marks); the per-part marking scheme printed on page 4 of the paper is reproduced in each answer. Most answers are required in essay format. All seven questions are solved below for completeness.

Reference texts: Vaníček & Krakiwsky, Geodesy: The Concepts (2nd ed., North-Holland); Hofmann-Wellenhof, Lichtenegger & Wasle, GNSS — Global Navigation Satellite Systems (Springer, 2008); Torge & Müller, Geodesy (4th ed., de Gruyter); Heiskanen & Moritz, Physical Geodesy (Freeman); Snyder, Map Projections — A Working Manual (USGS PP 1395); Natural Resources Canada geodetic references for NAD83(CSRS), CGVD2013 and the CGG2013 geoid model. Canadian datums/regulators throughout (NRCan, Canadian Geodetic Survey).