NDLI: Synchronisation of bistatic radar using chaotic AM and chaos-based FM waveforms

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Synchronisation of bistatic radar using chaotic AM and chaos-based FM waveforms

Content Provider	IET Digital Library
Author	Pappu, Chandra Sekhar Flores, Benjamin C. Debroux, Patrick S. Verdin, Berenice Boehm, James
Abstract	The authors developed a technique to synchronise a bistatic radar that uses a chaotic system to generate and process either wideband amplitude modulated (AM) or frequency modulated (FM) waveforms thereby extracting high-resolution information from the targets. For chaotic AM bistatic radar, a generalised projective synchronisation approach that includes a driving oscillator at the transmitter and a response oscillator at the receiver is considered. The receiver accepts a scaled version of the transmitted waveform where the scaling factor α accounts for space propagation losses that may not be known a priori. However, AM synchronisation is highly susceptible to noise. Alternatively, FM bistatic radar is implemented with a chaos-based FM waveform. Demodulation of this waveform using a phase lock loop is required to recover the instantaneous frequency which represents a chaotic state variable. The recovered and transmitter instantaneous frequencies are synchronised by using either generalised projective synchronisation or complete replacement synchronisation. The synchronised output is then used to reconstruct the FM waveform. They show that the short-time cross-correlation of the transmitted and reconstructed waveforms is high and its self-noise is negligible. Through entropy analysis of the cross-correlogram, they found that the bistatic FM radar performs better than the bistatic AM radar.
Starting Page	90
Ending Page	97
Page Count	8
ISSN	17518784
Volume Number	11
e-ISSN	17518792
Issue Number	Issue 1, Jan (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rsn/11/1
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rsn.2016.0043
Journal	IET Radar, Sonar & Navigation
Publisher Date	2016-06-17
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Amplitude Modulation Bistatic Radar Synchronisation Chaos-based FM Waveform Chaotic AM Waveform Chaotic Communication Chaotic State Variables Chaotic System Complete Replacement Synchronisation Correlation Method Cross-correlogram Entropy Analysis Demodulation Demodulator Discriminators And Mixers Driving Oscillator Entropy FM Radar Generalised Projective Synchronisation Approach High-resolution Information Extraction Instantaneous Frequency Recovery Modulation And Coding Method Modulator Oscillator Phase Lock Loop Phase Locked Loop Radar Equipment Radar Receiver Radar Transmitters Response Oscillator Short-time Cross-correlation Signal Processing And Detection System And Application Waveform Demodulation Wideband Amplitude Modulated Waveform Generation Wideband Frequency Modulated Waveform Generation
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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