JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

UNIT - I

Navigational Systems: Review of Navigational Systems: Aircraft navigational system. Geometry of the earth. Navigation equation. Navigation errors. Radio navigation system types and Performance parameters. ILS System, Hyperbolic navigation systems, Loran, Omega, Decca Radio direction finding, DME. TACAN and VORTAC.

UNIT - II

Inertial Navigation: Inertial navigation system. Sensing instruments: Accelerometer. Gyro- copes, Analytic and Gimbaled platforms. Mechanization. Error analysis, Alignment.

UNIT - III

Global Positioning System (GPS) for Navigation: Overview of GPS, Reference systems. Satellite orbits, Signal structure, Geometric dilution of precision (GDOP), or Precision dilution of recision (PDOP), Satellite ephemeris, Satellite clock, Ionospheric group delay. Tropospheric group delay, Multipath errors and Receiver measurement errors.

UNIT - IV

Differential GPS and WAAS: Standard and precise positioning service local area DGPS and Wide area DGPS errors. Wide Area Augmentation System (WAAS) architecture. Link budget and Data Capacity, Ranging function, Precision approach and error estimates.

UNIT - V

GPS Navigational Application: General applications of GPS, DGPS, Marine. Air and Land Navigation, Surveying, Mapping and Geographical information systems, Military and Space.

TEXT BOOKS:

• 1. Myron Kavton and Walter Friend R., “Avionics Navigation Systems”, Wiley,1997
• 2. Parkinson. BW. Spilker “Global Positioning System Theory and Applications”, Progress in Astronautics, Vol. I and II, 1996.

REFERENCE BOOKS:

• 1. Hoffman. B., Wellenhof. H. Lichtenegger and J. Collins, “GPS Theory and Practice”, Springer Verlang Wien, New York, 1992.
• 2. Elliot D. Kaplan, “Understanding GPS Principles and Applications”, Artech House. Inc., 1996.
• 3. Lieck Alfred, “GPS Satellite Surveying”, John Wiley, 1990.