Thesis

Study On Source Localization via Multidimensional Scaling From Different Measurements

PhD dissertation, advisor Prof. Wan Qun, School of information and Communication Engineering, UESTC 2017.

For citation (H. I. Ahmed, "Study On Source Localization via Multidimensional Scaling From Different Measurements," Ph.D., UESTC, China, 2017).

1. Provide an efficient algorithm for passive and active target location estimation by exploiting the multidimensional scaling analysis.

2. Reducing the impact of missing ranging or bearing information through matrix completion and distributed positioning algorithms.

3. Reduce the impact of the base station uncertainties for stationary/moving active/passive targets positioning based on MDS analysis

4. Enhance the positioning accuracy by introducing the hybrid location estimation algorithm using MDS analysis

Methods: Multidimensional Scaling, Parametric estimation, Matrix Completion

Performance Simulation of BPSK Signal Localization Based on Time Difference of Arrival

 advisor: Prof. Ping Wei , M.Eng. Thesis, signal and information processing Lab,  school of electronic Engineering  UESTC  2013.

Summary: In this research the performance of TDOA localization technique for Binary phase shift keying (BPSK) signals were studied. The cross-correlation among arbitrary sensors is used to estimate TDOA also by exploiting the spectral characteristic of the received signals. The weighted least square based methods are developed for location estimate with arbitrary sensors. Simulation have been achieved by Matlab.

Design and simulation  multi-functions array antenna

Hesham Ibrahim Ahmed, Hamad Abdurahman, Mohamed Ahmed Noor, (team)

Advisors: Asst. Prof. Sofian Hazaa and Asst. Prof. Ahmed Awad, BSc research, Karary University 2009.

Summary: the project have been done through simulation using Matlab and HFSS that mimic an array antenna, the element in antenna represented by simple dipole, the main lobe moved electronically by adding or subtracting the phase of the signal that feeds each element, the side loops reduced by applying window functions and a comparison have been done among them, we found that electronic scan is better that mechanic one and the side loops were reduced well.