Enhancement of DOP in Stratolite-based Navigation Systems

Abstract

A Global Positioning Sysem (GPS)-independent, stratolite (SL)-based navigation system is introduced and an optimum configuration of SLs is proposed by estimating its Geometric Dilution of Precision (GDOP) value. Improvement in GDOP due to augmentation of SL-based navigation system with geostationary satellite(s) is investigated. For this purpose, GDOP is estimated for various geometries of SLs/geostationary satellites. Furthermore, effect on DOP due to augmentation of SLs with GPS is examined. When a constellation of four SLs is augmented with GPS over Hyderabad region of India, GDOP is improved to 3.25 (max) from 4.45 (max).

Keywords:

• Dilution of precision
• Geostationary satellites
• Global positioning sysem
• Pseudolites.

Additional information

Notes on contributors

Quddusa Sultana

Quddusa Sultana has obtained her B.E degree in E.C.E from Osmania University in 1994, and M.Tech degree in D.S.C.E from J.N.T.U in 2001, Hyderabad. She has obtained her Ph.D degree from J.N.T.U in 2009. Her area of research is navigational electronics. She has been working as co-investigator on various research projects since 2009. She worked as assistant professor, then as associate professor, and now working as professor in the Department of Electronics and Communication Engineering, Deccan College of Engineering and Technology, Hyderabad. She has dozens of national and international conference as well as journal publications to her credit in the area of GPS, GAGAN, IRNSS, and Pseudolites. E-mail: [email protected]

Achanta Dattaterya Sarma

Achanta Dattaterya Sarma was born in August 1953 at Achanta, Andhra Pradesh. He obtained his Ph.D. in Electronic and Electrical Engineering from London University (UK) in 1986. He was associated with DEAL, Dehradun, Electrical Engineering Dept. of IIT, New Delhi, DLRL, Hyderabad, Telecommunications Division, Electrical Engineering Dept of. Eindhoven University of Technology, The Netherlands Wave propagation Laboratories, NOAA, Boulder, U.S.A. He has about 27 years of experience in the areas of GPS, Radio Wave propagation, and Mobile Communication. He has been guiding several Ph.D students in these areas. He has more than 200 papers to his credit. Presently, he is the Director for the Research and Training Unit for Navigational Electronics (NERTU), Osmania University, Hyderabad. E-mail: [email protected]

Ashwani Kumar

Ashwani Kumar obtained his B.Sc. (Hons) in Physics from BHU, Varanasi, in 1978 and M.Sc. from M.U., Bodh Gaya in 1980. He is working as Scinetist ‘G’ in Defence Electronics Research Laboratory, Hyderabad. Since 1984, he is in the field of Indegenous design and development of various types of antennas, antenna systems, multibeam phased arrays, reflectors and Radomes for comunication and radar Electronic Warfare applications. His present areas of interest include fractal antennas, wide band printed circuit antennas, multifunction shared aperture systems, and global satellite navigation systems. He has about 35 technical publications in international and national journals, seminars, and symposiums. He has received two patent and other two are under examination. He is recipient of various awards for indigenous development of state-of-the art EW technologies. He is Fellow of IETE, India and member of AOC, India. E-mail: [email protected]

Mohammed Abdul Malik

Mohammed Abdul Malik is the Director of Deccan Group of Institutions, Hyderabad. He obtained Doctoral Degree in Solid State Physics from Osmania University. He took the Post Graduate degree in Electronics from Bhopal University, Under Graduate degree from Osmania University. He worked as assistant professor, then as associate professor in the department of physics, Deccan College of Engineering and Technology, Hyderabad. He worked as in D.C.E.T from 2007 to 2010. He has published research papers in various national and international journals. Presently, he is working in the area of GPS and Pseudolites. E-mail: [email protected]