| Author: | Xu, Zixin |
| Title: | Cramer-Rao bounds (CRB) of the estimation of an incident source's angle-of-arrival & polarization for various triads of collocated but orthogonal dipole(s)/loop(s) |
| Degree: | M.Sc. |
| Year: | 2011 |
| Subject: | Estimation theory Radar -- Antennas Antennas (Electronics) Hong Kong Polytechnic University -- Dissertations |
| Department: | Department of Electronic and Information Engineering |
| Pages: | vi, 55 leaves : ill. ; 30 cm. |
| Language: | English |
| Abstract: | This work derives the closed-form Cramer-Rao bounds (CRBs) for the estimation of an incident far-field point-source's azimuth-elevation arriving angles and polarization parameters. The receiving antennas are a triad of spatially collocated but orthogonally oriented dipoles and/or loops. The CRBs for all twenty possible compositions of such a triad are derived in this dissertation. The derived CRBs are verified by Monte Carlo simulation of maximum-likelihood estimation. Furthermore, CRBs of triads with two antennas (one dipole and one loop) oriented along z-axis plus another dipole/loop oriented along x/y-axis have been simplified in the following commonly encountered polarization states, (i) horizontal-linearly polarization, (ii) vertical-linearly polarization, (iii) right-hand-circularly polarization. Qualitative observations are obtained from the derived formulas to help engineers to select antennas among the twenty different compositions. |
| Rights: | All rights reserved |
| Access: | restricted access |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| b24468411.pdf | For All Users (off-campus access for PolyU Staff & Students only) | 1.36 MB | Adobe PDF | View/Open |
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