Promotion of Improved Discrete Polynomial-Phase Transform Method for Phase Parameters Estimation of Linear Frequency Modulation Signal
- Authors: Nooshin Rabiee 1, Azad H.1, Parhizgar N.1
-
Affiliations:
- Department of Electrical Engineering, Shiraz Branch, Islamic Azad University
- Issue: Vol 64, No 11 (2019)
- Pages: 1266-1275
- Section: Theory and Methods of Signal Processing
- URL: https://journals.rcsi.science/1064-2269/article/view/201552
- DOI: https://doi.org/10.1134/S1064226919110214
- ID: 201552
Cite item
Abstract
The discrete polynomial-phase transform (DPT) method estimate chirp rate and central frequency of LFM signal based on sequential estimation of polynomial phase parameters. DPT method which has been developed by an iterative approach as Improved DPT method uses nonlinear least squares (NLS) technique to estimate phase parameters of the LFM signal. NLS have high computational load. In order to promote the precision of estimation and reduce the computational load in Improved DPT method, combined technique is proposed and used which provides an initial estimation of frequency interval based on NLS criterion in single-exponential mode and using random basis functions method.
About the authors
Nooshin Rabiee
Department of Electrical Engineering, Shiraz Branch, Islamic Azad University
Email: azad@shirazu.ac.ir
Iran, Islamic Republic of, Shiraz
Hamid Azad
Department of Electrical Engineering, Shiraz Branch, Islamic Azad University
Author for correspondence.
Email: azad@shirazu.ac.ir
Iran, Islamic Republic of, Shiraz
Naser Parhizgar
Department of Electrical Engineering, Shiraz Branch, Islamic Azad University
Email: azad@shirazu.ac.ir
Iran, Islamic Republic of, Shiraz