Correlation Properties of Noise Signals at the Outputs of Receiving Channels with a Single Resonant Circuit
https://doi.org/10.35596/1729-7648-2023-21-2-41-48
Abstract
When suppressing active noise interference, an important task is to determine the mutual correlation function and the power of noise signals at the outputs of receiving channels. The solution of this problem makes it possible to analyze the influence of non-identical frequency characteristics of receiving channels on the quality of compensation of active noise interference. The analysis was carried out for a model of the frequency characteristics of the receiving channels in the form of the frequency response of a single resonant circuit in a narrow-band approximation. It was assumed that the frequency response of one of the channels differs from the second channel by the central frequency and bandwidth. In the analysis, an approximate approximation of the frequency response of the detuned channel was used, assuming a slight detuning of the parameters of the resonant circuit. The input noise of the receiving channels was assumed to be white. The use of the obtained results is demonstrated in obtaining an expression for the potential effectiveness of a single-channel autocompensator.
About the Authors
Xuan Chinh Vu
Belarusian State University of Informatics and Radioelectronics
Belarus
Belarus
Master’s Student
Minsk
I. N. Davydzenka
Radio Engineering Center of the National Academy of Sciences of Belarus
Belarus
Belarus
Davydzenka Ihar Nikolaevich, Cand. of Sci., Associate Professor, Scientific Secretary
220072, Minsk, P. Brovki St., 15/5, room 420
Tel.: +375 29 776-85-52
References
1. Maksimov M. V. (1956) Mutual Correlation of Fluctuation Noise at the Output of Frequency Filters. Radiotekhnika = Radioengineering. (11), 28–38 (in Russian).
2. Cherniak Yu. B. (1960) Mutual Correlation of Voltage Noise at the Output of Amplifiers with Overlapping Frequency Characteristics. Radiotehnika i Elektronika = Radio Engineering and Electronics. (4), 551–561 (in Russian).
3. Farina A. (1977) Single-Sidelobe Canceller: Theory and Evaluation. IEEE Transactions, AES-13. (6), 690– 699. DOI: 10.1109/TAES.1977.308510.
4. Gerlach K. (1990) The Effects of IF Bandpass Mismatch Errors on Adaptive Cancellation. IEEE Transactions on Aerospace and Electronic Systems. 26 (3), 455–468. DOI: 10/1109/7.106122.
5. Bogachev V. A. (1999) Suppression of Interference by Adaptive Compensation System with Non-Identical Frequency Characteristics of Receiving Channels. Novosibirsk, Research Institute of Measuring Instruments (in Russian).
6. Farina A. (2003) Digital Equalization in Adaptive Spatial Filtering for Radar Systems: a Survey. Signal Processing. 83 (1), 11–29. DOI: 10.1016/S0165-1684(02)00389-4.
7. Antipov V. N., Koltyshev E. E., Frolov A. Yu., Jankowski V. T. (2020) Analysis of the Impact of Non-Identity of the Receiving Channels of Radar Stations on the Work of Adaptive Coherent Jammer. Radiotekhnika = Radioengineering. 84 (1), 33–41. DOI: 10.18127/j00338486-202001(01)-04 (in Russian).
8. Tihonov V. I., Harisov V. N. (2004) Statistical Analysis and Synthesis of Radio Engineering Devices and Systems. Moscow, Radio and Communication Publ. (in Russian).
9. Prudnikov A. P., Brichkov Yu. A., Marichev O. I. (1981) Integrals and Series. Elementary Functions. Moscow, Nauka Publ. (in Russian).
10. Gradshtein I. S., Ryzhik I. M. (1963) Table of Integrals, Series and Products. Moscow, State Publishing House of Physical and Mathematical Literature (in Russian).
Review
For citations:
Vu X., Davydzenka I.N. Correlation Properties of Noise Signals at the Outputs of Receiving Channels with a Single Resonant Circuit. Doklady BGUIR. 2023;21(2):41-48. (In Russ.) https://doi.org/10.35596/1729-7648-2023-21-2-41-48
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