JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Course Objective

To understand the Principles of geodesy with reference to GPS, processing of

GPS data to help for satellite survey.

Course Outcome

at the end of the course the student able to learn to identify GPS components and

their functions, Select GPS survey method, Interpret the navigational message and signals received by the GPS, Identify error sources in GPS observations, apply the corrections for accurate positioning and to Map the geospatial features.

UNIT - I

Basics : Definition - Fundamental goals of Geodesy - Definitions - basic concepts - Historical perspective - development applications in Satellite Geodesy - Geoid and Ellipsoid satellite orbital motion - Keplerian motion - Kepler‟s Law - Perturbing forces - Geodetic satellite

UNIT - II

Different Techniques : Determination of direction by photography - SECOR - Electronic observation techniques - Doppler effect - Positioning concept - Development of TRANSIT satellites.

UNIT - III

Satellite System: GPS - Different segments - space control and user segments - satellite configuration - GPS signal structure - Orbit determination and Orbit representation Anti Spoofing and Selective Availability - Task of control segment - GPS receivers - main receiver components - Example of GPS receivers.

UNIT - IV

GPS Data Processing : GPS observables - code and carrier phase observation - linear combination and derived observables - concept of parameter estimation - data processing - software modules - solutions of cycle slips ambiguities RINEX format. Concepts of rapid static methods with GPS semi kinematic and pure kinematic methods - basic constellation of satellite geometry & accuracy measures.

UNIT - V

Applications of Satellite Geodesy: Geodetic control surveys, Cadastral surveying, Photogrammetry & Remote Sensing, Engineering applications, and Monitoring - GIS. GLONASS , GALILEO, COMPASS and IRNSS satellite configuration comparison - Satellite Laser Ranging & Applications - Concepts of satellite altimetry.

TEXTBOOKS:

• 1. Satellite Geodesy by Gunter Seeber, Copy Right 2003 By Walter De Gruyter 1993, ISBN: 3- 11-017549-5.
• 2. Global Positioning System – Theory and Practice – Hofmann W. B, Lichtenegger. H, Collins. J – Springer Verlag Wein, New York.-2008
• 3. “GPS Satellite Surveying”, Alfred Leick 3rd Edition, John Wiley and Sons 2004.

REFERENCES:

• 1. Global Navigation Satellite Systems by G. S. Rao 2010 Tata McGraw Hill Education Pvt. Ltd.
• 2. “GPS Theory, Algorithms and Applications .Guocheng Xu,” Springer-Verlag, 2003. M. Tech – I Year – II Sem. (GIST)