Radar

Radar

Improvement of the Accuracy and Reduction of the Computational Complexity of the Discrete Polynomial-Phase Transform Method for the Estimation of Chirp Signal Parameters

Authors
sajad Falah Tafty 1
mahmoud karimi 1
mojtaba Behzad Fallahpour 2
1 Shiraz University
2 Malek-Ashtar University of Technology
Abstract
This paper presents a technique to improve mean-squared error of chirp rate and central frequency estimation in high signal to noise ratios in Discrete Phase Transform and Improved Discrete Phase Transform methods. The estimation of chirp signal parameters is used in many signal processing fields such as intercept radars, SARs, ISARs, and disrupting enemy radars. Increasing the estimation accuracy of chirp signal parameters in these applications is of great importance. In this paper, in order to increase the estimation accuracy of chirp signal parameters in Discrete Phase Transform and Improved Discrete Phase Transform methods, instead of periodogram frequency estimation, the proposed technique is used. Simulation results show that this technique reduces the computational complexity of these methods and increases the estimation accuracy of chirp signal parameters.
Keywords
Chirp Rate Estimation
Central Frequency Estimation
DPT Method
Improved DPT
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Radar
Volume 5, Issue 2 - Serial Number 2
January 2020
Pages 57-66

  • Receive Date 01 January 2017
  • Revise Date 24 August 2019
  • Accept Date 19 September 2018
  • Publish Date 23 July 2017