Hesam Ghaferi

Work place: Sama technical and vocational training college, Islamic Azad University, Shiraz Branch, Shiraz, Iran

E-mail: Hesam.Ghaferi@gmail.com


Research Interests: Engineering, Computational Engineering, Computational Science and Engineering


Hesam Ghaferi received his M.S. degree in Electrical Engineering from the Islamic Azad University, Sepidan, Iran, during 2012-2014 and Electronics Engineering degree from University of Applied Science and Technology ITMC, Shiraz, Iran. His research interests include Digital signal processing, optimization techniques and implementation of signal processing based on FPGA.

Author Articles
Optimization of Matched and Mismatched Filters in Short Range Pulse Radars using Genetic Algorithm

By Hesam Ghaferi Mohammad Mehdi Pishrow

DOI: https://doi.org/10.5815/ijigsp.2016.05.03, Pub. Date: 8 May 2016

Matched and mismatched filters are considered important parts of a radar signal processing unit. In this paper, we present an approach to optimize the matched filters and mismatched filters in short range pulse radars. For radar, the matched filter coefficients are the complex conjugates of transmitted code. We used binary phase codes as transmitted pulse. The disadvantage of binary phase codes is having high sidelobe levels in the output of correlation function. Thus, we decided to use optimization algorithms for finding binary phase codes with minimum peak sidelobe levels (MPS). After that, we succeeded in producing mismatched filter coefficients (Mis-co) for each code using floating point genetic algorithm (FGA) and we could generate and test the filter coefficients with maximum peak to sidelobe level ratio (PSR). For testing the filter, we plotted ambiguity function for each set of coefficients and tested the filter with Doppler shift.

[...] Read more.
Other Articles