Developing an algorithm for automatic tuning of the spectral analyzer central frequency

Authors: Danilina E.A.
Published in issue: #1(18)/2018
DOI: 10.18698/2541-8009-2018-1-222
Category: Instrument Engineering, Metrology, Information-Measuring Instruments and Systems | Chapter: Instruments and Measuring Methods
Keywords: radio signal, signal frequency, digital signal processing, algorithms for frequency measuring, spectral analyzer, Fourier transformation, auto correlation, phase locked loop
Published: 20.12.2017

The article considers the problem of the radio signal frequency precise determination. We present a review of the most well-known approaches to the carrier automatic determination such as: autocorrelative approach, approaches based on fast and discrete Fourier transformations, frequency-measuring according to the number of signal transitions through zero level, and phase-locked loop systems. We have compared the computational complexity, speed and precision of the algorithms and examined their applicability within the scope of the set task. The article suggests an algorithm for the spectral analyzer central frequency automatic tuning which represents a combination of the modified methods. We have conducted a simulation and made comparative analysis of the results obtained.

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