Consideration of methods to protect frequency resources of satellite system against unauthorized access

Kalashnikova, A.S.; Sukhotin, V. V.

doi:10.1109/sibcon.2015.7147083

Cited by 3 publications

(2 citation statements)

References 1 publication

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“…The method based on the use of cones is described in the paper [7]. With high accuracy it can be assumed that emitting of the antenna on board of the satellite forms in space a circular conical surface, the apex of which is the subsatellite point.…”

Section: B Methods Based On the Use Of Consmentioning

confidence: 99%

“…The coordinates of the RT can be determined by measuring the phase difference between the signals emitted by them in these positions of the satellite. [6][7] However, this method does not allow to determine the coordinates of the RT in case if it is unknown whether the RT is located on the Earth's surface or outside it.…”

Section: A Radio Transmitter Is Located On the Earth's Surfacementioning

confidence: 99%

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Determination of the radio transmitter coordinates in satellite communication systems

Kamyshnikova

Sukhotin

2016

2016 International Siberian Conference on Control and Communications (SIBCON)

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Section: B Methods Based On the Use Of Consmentioning

confidence: 99%

Section: A Radio Transmitter Is Located On the Earth's Surfacementioning

confidence: 99%

Determination of the radio transmitter coordinates in satellite communication systems

Kamyshnikova

Sukhotin

2016

2016 International Siberian Conference on Control and Communications (SIBCON)

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Computer model of the transponder for the analysis of phase distortions of the signal

Shagov,

Sukhotin,

Zubov

2023

S&T

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The article discusses issues related to the development of a computer model of an on-board relay complex with linear signal retransmission for the analysis of phase distortion of the signal. It is very important to know the phase distortion (foray) when determining the coordinates of the radio source by the phase method using a virtual antenna array in satellite communication systems. The literature review given in the article showed that it was not possible to conduct these studies on existing computer models. Based on the classical version of the block diagram of the on-board relay complex, a computer model was developed in the MATLAB R 2016b (Simulink) environment. The model includes a receiving device, an input and output multiplexer and power amplifiers. Mathematical models of Saleh and Gorbanni amplifiers implemented on traveling wave lamps and solid-state amplifiers, respectively, were taken as nonlinear amplifiers. Multiplexers are implemented in the form of bandpass filters connected in parallel. The hybrid divider and ferrite circulators were not included in the model. In the model, it is possible to investigate the dependence of the phase distortion of the signal on the characteristics of the structural blocks of the on-board relay complex. The computer model also provides for the possibility of studying the effect of noise on phase distortion.

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Digital filter for device of determining coordinates of radio signal source in satellite telecommunications systems

Sukhotin

Tikhtenko

Zhgun

et al. 2020

S&T

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Work is devoted research of signal power dependence that will be used in the measurements and noise components of the signal from the digital filter type, filter parameters for various signal-to-noise ratios. The substantiation of the relevance of research is given, which consists in finding the possibility of using digital filters for a device for determining the coordinates of a radio signal source in satellite telecommunications, providing a minimum error in measuring the phase difference. The structure of the system for determining the coordinates of the radio signal source is given. The developed computer model and its description are presented. The researchers are considered for digital recursive band-pass filters of the Butterworth, Chebyshev type 1, Chebyshev type 2, Zolotarev-Cauer type, which are specified using a discrete linear system. Appropriate conclusions are drawn about the applicability of digital filters in the device for determining coordinates. The types of filters are determined and requirements are presented to ensure the minimum error in measuring the phase difference.

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Consideration of methods to protect frequency resources of satellite system against unauthorized access

Cited by 3 publications

References 1 publication

Determination of the radio transmitter coordinates in satellite communication systems

Determination of the radio transmitter coordinates in satellite communication systems

Computer model of the transponder for the analysis of phase distortions of the signal

Digital filter for device of determining coordinates of radio signal source in satellite telecommunications systems

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