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IMPROVEMENT IN HYPERBOLIC POSITION LOCATION SYSTEMS
by
Ziba Ebrahimian
A Dissertation Presented to the
FACULTY OF THE GRADUATE SCHOOL
UNIVERSITY OF SOUTHERN CALIFORNIA
In Partial Fulfillment of the
Requirements for the Degree
DOCTOR OF PHILOSOPHY
(ELECTRICAL ENGINEERING)
December 2006
Copyright 2006 Ziba Ebrahimian
Object Description
| Title | Improvement in hyperbolic position location systems |
| Author | Ebrahimian, Ziba |
| Author email | zibae@yahoo.com |
| Degree | Doctor of Philosophy |
| Document type | Dissertation |
| Degree program | Electrical Engineering |
| School | Viterbi School of Engineering |
| Date defended/completed | 2006-06-20 |
| Date submitted | 2006 |
| Restricted until | Restricted until 14 Dec. 2008. |
| Date published | 2008-12-14 |
| Advisor (committee chair) | Scholtz, Robert A. |
| Advisor (committee member) |
Lindsey, William C. Bonahon, Francis |
| Abstract | Non-Line of Sight (NLOS) error is usually the largest cause of degradation in localization accuracy and is quite common in all environments. In the first part of this work, four algorithms are given to distinguish between line-of-sight (LOS) and reflected signals. These algorithms exploit timing equations in an RF emitter location system. The algorithms are designed to be applied to both directional and omnidirectional receivers.; It is known that hyperbolic radio-location systems possess intrinsic uncertainty that depends on the sensors' geometry and the modulation's time resolution. In the second part of this work, the best locations for the receivers to minimize the uncertainty in 2-dimensional (2-D) and 3-dimensional (3-D) models for indoor hyperbolic position location systems are found. Next, we derived the number of sensors that is sufficient to cover any area in 2-D and 3-D cases.; Three different measurements were done with Ultra-Wide-Band signals. The transmitter was located with good precision, and the accuracy of the first and third algorithms were verified for omnidirectional receivers by the experiments. The precision of the first and third algorithms was analyzed by simulated Additive White Gaussian Noise (AWGN). |
| Keyword | positioning systemsp; localization; UWB; arrays; hyperbolic positioning systems |
| Language | English |
| Part of collection | University of Southern California dissertations and theses |
| Publisher (of the original version) | University of Southern California |
| Place of publication (of the original version) | Los Angeles, California |
| Publisher (of the digital version) | University of Southern California. Libraries |
| Type | texts |
| Legacy record ID | usctheses-m221 |
| Rights | Ebrahimian, Ziba |
| Repository name | Libraries, University of Southern California |
| Repository address | Los Angeles, California |
| Repository email | http://www.usc.edu/isd/libraries/services/ask_a_librarian/email/ |
| Filename | etd-Ebrahimian-20061208 |
| Archival file | uscthesesreloadpub_Volume51/etd-Ebrahimian-20061208.pdf |
Description
| Title | Page 1 |
| Full text | IMPROVEMENT IN HYPERBOLIC POSITION LOCATION SYSTEMS by Ziba Ebrahimian A Dissertation Presented to the FACULTY OF THE GRADUATE SCHOOL UNIVERSITY OF SOUTHERN CALIFORNIA In Partial Fulfillment of the Requirements for the Degree DOCTOR OF PHILOSOPHY (ELECTRICAL ENGINEERING) December 2006 Copyright 2006 Ziba Ebrahimian |
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