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Vol. 13 (2010 year), No. 3
Kalityonkov A.N., Gurin A.V., Kalityonkov N.V., Milkin V.I.
Peculiarities of radiocommunication at navigation in the northern part of marine area A4
The work contains researches concerning statistic course recording data analysis for detection of different regimes in the dynamic "ship – sea" system, and plans directions of further investigations. The special attention has been paid to application of statistic analysis to course recording data processing and detection of unsafe regimes. The conclusions have been corroborated by a large amount of course recording data analyzed.
(in Russian, стр.4, fig. 1, tables. 0, ref 1, Adobe PDF, Adobe PDF 0 Kb)
Vol. 13 (2010 year), No. 3
Kalityonkov A.N., Kalityokov N.V., Milkin B.I., Gurin A.V., Chernous S.A.
Equipment complex for researches of GPS positioning peculiarities at navigating in Arctic
The problem of high frequency radiocommunication in Arctic during the geomagnetic storm has been considered in the paper.
(in Russian, стр.4, fig. 3, tables. 0, ref 1, Adobe PDF, Adobe PDF 0 Kb)
Vol. 13 (2010 year), No. 4
Milkin V.I., Kalityonkov N.V., Kalityonkov A.N., Gurin A.V., Zagorodneva N.S., Amel'kin D.A.
Innovative polarization antenna for radiocommunication in high latitudes (Navigation safety in Arctic)
The problem of loss of antenna systems' efficiency due to the so-called polarization mismatch is extremely relevant for the high-latitude radio paths. This is especially important when operating in the UHF band in a rocking vessel. The problem of using the structures of active vibrators on the basis of Z-elements as receiving and transmitting antennas with possibilities of rapid changes in the plane of polarization of the received/radiated signal has been solved.
(in Russian, стр.3, fig. 4, tables. 0, ref 1, Adobe PDF, Adobe PDF 0 Kb)
Vol. 13 (2010 year), No. 4
Zharkikh A.A., Gurin A.V.
Plastunov V.Yu., Exactly reversible method of hiding information in audiofile preserving container histogram
A new method of hiding information inside audio file-container has been described in the paper. This method is robust to steganalysis based on histogram comparison. Method’s merits are its exact reversibility and capability of its realization in real time. But it doubles the size of the output file, and some high frequency components appear in audio file stego. The results of algorithm simulation and container capacity estimation have been given. The method can also be used for embedding watermarks in audio files.
(in Russian, стр.4, fig. 3, tables. 0, ref 6, Adobe PDF, Adobe PDF 0 Kb)
Vol. 14 (2011 year), No. 3
Gurin A.V., Kalityonkov A.N., Kalityonkov N.V., Milkin V.I.
On model distribution of electron concentration in high latitude ionosphere
The method of analytic representation of three-dimensional and two-dimensional distribution of electron density in the ionosphere based on model approximations of the Chapman layer has been considered in the paper.
(in Russian, стр.7, fig. 0, tables. 0, ref 1, Adobe PDF, Adobe PDF 0 Kb)
Vol. 14 (2011 year), No. 3
Milkin V.I., Kalityonkov N.V., Gurin A.V.
Innovation approach to creating array antennas
Innovative approaches to creating array antennas for receiving radio signals of television including the digital one have been proposed. Phased-array antennas based on Z-elements have enhanced performance. This expands the perspective of their applied applications.
(in Russian, стр.5, fig. 4, tables. 0, ref 5, Adobe PDF, Adobe PDF 0 Kb)