GI3304 Geodesy Syllabus:

GI3304 Geodesy Syllabus – Anna University Regulation 2021

COURSE OBJECTIVES:

 To understand the geometry of the earth, Gravity, and its relationship with nature.

UNIT I FUNDAMENTALS

Definitions – Classifications, Problem of Geodesy and purpose of Geodesy Historical development and Organization of Geodesy. Reference Surfaces and their relationship. Applications, Engineering, Lunar, Planetary and interferometric Synthetic aperture radar Geodesy – Local and International Spheroid.

UNIT II GEOMETRIC GEODESY

Geometry of ellipsoid, fundamental mathematical relationship of ellipsoid, Geodetic, Geocentric and Reduced latitudes and their relationship. Ellipsoidal Co-ordinates in terms of Reduced, Geodetic and geocentric latitude. Radius of curvature in the meridian & prime vertical and their relationship. Mean Radius of curvature in any azimuth, Length of the meridian arcs and arcs of parallel and Area of trapezium on the ellipsoid. Curves on the ellipsoid, properties of Geodesic.

UNIT III CO-ORDINATE SYSTEMS

Natural or Astronomical Co-ordinate System, Geodetic or Geographical co-ordinate System, Rectangular or Cartesian Co-ordinate System and relationship between them. Curvilinear Coordinate System. Deflection of Vertical, Spherical excess. Astro-Geodetic method of determining the reference Spheroid.

UNIT IV PHYSICAL GEODESY

Basics – INGN -the significance of gravity measurements, Gravity field of earth, Concept of equipotential, Geo potential and Sphero potential Surface – Normal gravity and its computations, Methods of measuring Absolute and Relative gravity- Gravimeters – Reduction of gravity measurements, terrain and Isostasy corrections. Gravity networks. Gravity anomaly and Gravity disturbance – Fundamental equation of Physical Geodesy. Gravimetric determination of Geoid and Deflection of Vertical – Gravimetric satellite.

UNIT V GEODETIC ASTRONOMY

Celestial Sphere – Astronomical triangle – celestial coordinates systems and its relationship with Cartesian Co-ordinates and Transformation between them – Special star positions, Major 44 constellations – time systems (sidereal, Universal, atomic and standard) rising and setting of Stars with respect to Declination, hour angle and Azimuth, Culmination, Prime Vertical Crossing and Elongation.

TOTAL:45 PERIODS
COURSE OUTCOMES:

On completion of the course, the student is expected to
CO1 Learn about the fundamentals of Geodesy
CO2 Understand the concepts of geoid, ellipsoid and their interrelationship
CO3 Know about the various types of coordinate systems and relationship between them
CO4 Learn about the methods for measurement of gravity and gravity network
CO5 Understand the concepts of geodetic astronomy

TEXTBOOKS:

1. Wolfgang Torge, Geodesy, Walter De Gruyter Inc., Berlin, 2015 2nd edition.
2. Guy Bomford‖ Geodesy‖ Nabu Press, 2015, ISBN 1172029091.

REFERENCES:

1. PetrVanicek and Edward J. Krakiwsky, Geodesy: The concepts, North-Holland Publications
Co., Amsterdam, 2014 2nd edition.
2. Tom Herring, Geodesy Elsevier,2009, ISBN: 0444534601
3. Schwarze, V.S. Geodesy: The challenge of the 3rd millennium, Springer verlag, and 2003.
4. James R.Smith, Introduction to Geodesy, John wiley & Sons Inc. 1997