Please use this identifier to cite or link to this item: http://hdl.handle.net/10603/12748
Title: GPS signal propagation characteristics analysis and development of a new navigation solution for precise navigation applications
Researcher: Sateesh Kumar Gudla
Guide(s): Sasi Bhushana Rao, G
Keywords: Electronics Engineering
Very High Frequency Omni directional Range
Global Navigation Satellite System
GPS Architecture
Pseudorandom Noise
Upload Date: 7-Nov-2013
University: Andhra University
Completed Date: 2013
Abstract: The introduction of Global Positioning System (GPS) has been a major breakthrough especially in the field of navigation. Navigation is the process of directing the movement of a vehicle safely and efficiently from one place to another. The annual growth rate of air traffic in India is approximately 18% and it is greater than rest of the world, which is leading to air space congestion and bringing a great difficulty in controlling the air traffic. In order to control this increased air-traffic efficiently. Satellite based navigation system (e.g. GPS, GALILEO and GLONASS) have to be used in place of the existing ground based navigation systems such as NBD, VOR, DME, ILS etc., as the ground based navigation system offer limited accuracy due to multipath and angular nature of radiating beams. The GPS is a satellite based modern navigation system that provides accurate three dimensional (3D) position, velocity and timing information up to 10-6 sec anywhere on or above the earthand#8223;s surface. The GPS is a location system based on the constellation of 24 satellites, orbiting round the earth at altitudes of 20,200km. GPS system provides precise 3D navigation solution of the order of 30m and 45m horizontal and vertical accuracies respectively. The 3D position determination is based on the concept of trilateration. In this concept, the unknown 3D position (x-, y- and z- coordinates) of the receiver is computed by estimating the satellite positions in the space and measuring the distances to each satellite from the receiver. This distance is referred to as the pseudorange. The pseudorange is calculated by multiplying the radio signal velocity (3×108m/sec) with the signaland#8223;s travel time from the satellite to the receiver. The user receiver position can be determined by solving the navigation equations which are formed by measuring the pseudoranges from at least four satellites.
Pagination: xxviii, 235p.
URI: http://hdl.handle.net/10603/12748
Appears in Departments:Department of Electronics & Communication Engineering

Files in This Item:
File Description SizeFormat 
01_title.pdfAttached File15.9 kBAdobe PDFView/Open
02_certificate.pdf136.33 kBAdobe PDFView/Open
03_acknowledgements.pdf18.94 kBAdobe PDFView/Open
04_abstract.pdf122.75 kBAdobe PDFView/Open
05_contents.pdf17.06 kBAdobe PDFView/Open
06_list of figures.pdf98.66 kBAdobe PDFView/Open
07_list of tables.pdf15.65 kBAdobe PDFView/Open
08_list of symbols.pdf804.06 kBAdobe PDFView/Open
09_list of abbreviations.pdf9.62 kBAdobe PDFView/Open
10_chapter 1.pdf178.91 kBAdobe PDFView/Open
11_chapter 2.pdf435.51 kBAdobe PDFView/Open
12_chapter 3.pdf696.06 kBAdobe PDFView/Open
13_chapter 4.pdf784.43 kBAdobe PDFView/Open
14_chapter 5.pdf782.97 kBAdobe PDFView/Open
15_chapter 6.pdf1.48 MBAdobe PDFView/Open
16_conclusions.pdf95.46 kBAdobe PDFView/Open
17_appendix a.pdf353.72 kBAdobe PDFView/Open
18_appendix b.pdf262.61 kBAdobe PDFView/Open
19_appendix c.pdf221.31 kBAdobe PDFView/Open
20_references.pdf177.4 kBAdobe PDFView/Open


Items in Shodhganga are protected by copyright, with all rights reserved, unless otherwise indicated.