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

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

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)...

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Bibliographic Details
Published in:Remote sensing (Basel, Switzerland) Vol. 14; no. 9; p. 1984
Main Authors: Abd, Mariam H., Al-Suhail, Ghaida A., Tahir, Fadhil R., Ali Ali, Ahmed M., Abbood, Hamza A., Dashtipour, Kia, Jamal, Sajjad Shaukat, Ahmad, Jawad
Format: Journal Article
Language:English
Published: Basel MDPI AG 01-05-2022
Subjects:
Acoustics
Aircraft
Antennas
Chaos theory
Chaotic FM Radar
chaotic time-delay
Communications systems
Complexity
Cross correlation
Design
Information processing
Ionosphere
mono-static radar
Noise
Phase locked loops
Phase-Locked Loop (PLL)
Radar
Radar equipment
Radar systems
Receivers & amplifiers
Remote sensing
Signal processing
Signal to noise ratio
Synchronism
Synchronization
Target detection
Transmitters
Voltage controlled oscillators
Waveforms
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Summary: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.
ISSN:2072-4292
2072-4292
DOI:10.3390/rs14091984