Abstract
It is shown, that for spectrum analyzer noise immunity increase, during processing of optical Doppler location signal with unknown frequency, random appearance time and low signal to noise ratio it is advisable to use methods of false alarm probability decrease, where decision about useful signal presence is made according to two pulses appearance at the matched filter output. These pulses have the same delay times with regard to signal analysis beginning time. This methodology application for signal detection allows to decrease a false alarm probability with regard to one period of analysis in case of the same values of threshold.
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References
V. I. Tikhonov, Statistical Radio Engineering (Sov. Radio, Moscow, 1974) [in Russian].
Ya. D. Shirman, Signals Resolution and Compression (Sov. Radio, Moscow, 1994) [in Russian].
V. L. Kozlov, V. A. Firago, and A. F. Shilov, “Fast Sequential Spectrum Analyzer for Doppler Signals,” in Laser and Optical Electronic Engineering Collection [Universitetskoye, Minsk, 1989], pp. 202–207.
V. I. Tikhonov, Nonlinear Conversion of Random Signals (Sov. Radio, Moscow, 1986) [in Russian].
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Original Russian Text © V.L. Kozlov, 2009, published in Izv. Vyssh. Uchebn. Zaved., Radioelektron., 2009, Vol. 52, No. 5, pp. 53–58.
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Kozlov, V.L. Selection of signal detection threshold in Doppler spectrum analyzer. Radioelectron.Commun.Syst. 52, 261–264 (2009). https://doi.org/10.3103/S0735272709050069
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DOI: https://doi.org/10.3103/S0735272709050069