Class notes

Geomatics and Measurement in Civil Engineering

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Course
CVL 352

Institution
Ryerson University (Ru )

Detailed study of modern surveying instruments such as total stations, GPS, GNSS, and laser scanners. Instruction on methods for collecting, processing, and analyzing spatial data.

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Uploaded on January 14, 2024
Number of pages 7
Written in 2021/2022
Type Class notes
Professor(s) Professor michael chapman
Contains All classes

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LECTURE 2 (CH13)
SHAPE OF EARTH
 Shape is an ellipsoid
 Radius of equator is larger than at poles

o

 Geoid is a surface at msl, perpendicular to direction of gravity
 Ellipsoid is obtained by revolving ellipse around Earth's polar axis
 Ellipsoid:

o

FUNDAMENTALS OF GEODESY
 Deals with measurement and representation of Earth
 Major disciplines
o Precision positioning - satellite geodesy
o Geoid determination - physical geodesy
o Geodynamics - integrated geodesy
 Geodetic surveying: Curves surface of Earth considered by doing calcs on an ellipsoid
 Plane surveying: surface of ellipsoid approximated by a plane
 Geodetic surveys: relative positions of widely spaced monuments
 Control surveys: Establish horizontal and vertical positions

, o Horizontal: determine geodetic latitude, geodetic longitudes
o Vertical: Determine elevations (benchmarks) for a network of reference monuments
o Cutting plane of a meridian: Passes through point P and north/south poles
 Longitude:





REPRESENTATION OF DISTANCES AND ANGLES ON EARTHS SURFACE
 Latitude vs longitude:
o
COORDINATE S

SYSTEMS AND DATUMS
 Coordinate Systems:
o Cartesian

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