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Synchronization of Monostatic Radar Using a Time-Delayed Chaos-Based FM Waveform

Abd, Mariam H.; Al-Suhail, Ghaida A.; Tahir, Fadhil R.; Ali Ali, Ahmed M.; Abbood, Hamza A.; Dashtipour, Kia; Jamal, Sajjad Shaukat; Ahmad, Jawad

Authors

Mariam H. Abd

Ghaida A. Al-Suhail

Fadhil R. Tahir

Ahmed M. Ali Ali

Hamza A. Abbood

Sajjad Shaukat Jamal



Abstract

There is no doubt that chaotic systems are still attractive issues in various radar applications and communication systems. In this paper, we present a new 0.3 GHz mono-static microwave chaotic radar. It includes a chaotic system based on a time-delay to generate and process frequency modulated (FM) waveforms. Such a radar is designed to extract high-resolution information from the targets. To generate a continuous FM signal, the chaotic signal is first modulated using the voltage control oscillator (VCO). Next, the correct value for the loop gain (G) is carefully set when utilizing the Phase-Locked Loop (PLL) at the receiver, so that the instantaneous frequency that reflects a chaotic state variable can be reliably recovered. In this system, the PLL synchronization and radar correlation are enough to recover the echo signal and detect the target. The finding indicates that the system can be implemented with no need to use the complete self-synchronization or complex projective synchronization schemes as compared to the existing chaotic radar systems. The simulation results show that the short-time cross-correlation of the transmitted and reconstructed waveforms is good and satisfactory to detect the target under various signal-to-noise ratio (SNR) levels and with less complexity in the design.

Journal Article Type Article
Acceptance Date Apr 15, 2022
Online Publication Date Apr 20, 2022
Publication Date 2022
Deposit Date Apr 27, 2022
Publicly Available Date Apr 27, 2022
Journal Remote Sensing
Publisher MDPI
Peer Reviewed Peer Reviewed
Volume 14
Issue 9
Article Number 1984
DOI https://doi.org/10.3390/rs14091984
Keywords synchronization; chaotic time-delay; Phase-Locked Loop (PLL); mono-static radar; Chaotic FM Radar
Public URL http://researchrepository.napier.ac.uk/Output/2866230

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