Detection of Super Regenerative Receiver using Amplitude Modulated Stimulation
Super regenerative receivers (SRRs) are utilized in a number of electronic devices and detecting their presence from extended distances is critical for many applications. This paper describes a new technique to detect such devices from extended distances by utilizing the fact that the frequency of the SRR quench oscillator is dependent on the power of the stimulating signal. This technique is a coherent active detection technique, based on modulated stimulation. The SRR is stimulated with an amplitude modulated signal which causes the emissions to become frequency modulated. The recorded emissions are then frequency demodulated and match-filtered with the modulating signal for robust detection. This detection technique is a coherent technique that is not affected by other noncoherent signals in the spectrum, and as such outperforms amplitude detection techniques in terms of success of detection and range.
M. T. Ghasr et al., "Detection of Super Regenerative Receiver using Amplitude Modulated Stimulation," IEEE Transactions on Instrumentation and Measurement, vol. 62, no. 7, pp. 2029-2036, Institute of Electrical and Electronics Engineers (IEEE), Apr 2013.
The definitive version is available at http://dx.doi.org/10.1109/TIM.2013.2253161
Electrical and Computer Engineering
Keywords and Phrases
Frequency Demodulation; Modulated Stimulation; Super Regenerative Receivers (SRRs); Unintended Emission; Amplitude Detection; Amplitude Modulated Signals; Detection Technique; Frequency Modulated; Radio Receivers; Signal Detection
International Standard Serial Number (ISSN)
Article - Journal
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