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197 research outcomes, page 1 of 20
  • publication . Article . 2018
    Open Access Russian
    Authors:
    D. S. Borovitsky; A. E. Zhesterev; V. P. Ipatov; R. M. Mamchur;
    Publisher: Saint Petersburg Electrotechnical University "LETI"

    The article deals with the study of quasi-optimal TOA discriminator of an onboard echo-signal tracker of the altimeter carried by a space vehicle. In modern space-based altimeters, final data processing is imposed on the ground-based center receiving information from th...

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  • publication . Article . 2018
    Open Access
    Authors:
    V. V. Nikitin; A. D. Frantsuzov;
    Persistent Identifiers
    Publisher: St. Petersburg Electrotechnical University LETI

    The problem of linear antenna construction synthesize is first formulated and solved. Linear antenna consists of antenna array (AR) and power divider (PD). Linear omnidirectional AR with cosecant pattern is synthesized using partial-beam method. Beam-forming scheme for ...

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  • publication . Article . 2018
    Open Access Russian
    Authors:
    Yu. F. Golovnev; D. A. Nurguleev;
    Persistent Identifiers
    Publisher: Saint Petersburg Electrotechnical University "LETI"

    The basis of spin filter operation is the possibility to obtain different population of states with spins up and down for free electrons. However, in a magnetic macroscopic field, scattering by heavy atoms reduces their population density by 106 times. To obtain the max...

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  • publication . Article . 2018
    Open Access Russian
    Authors:
    A. A. Bludov; G. A. Gorbatovskij; V. S. Pavlov; A. F. Suvorov;
    Persistent Identifiers
    Publisher: Saint Petersburg Electrotechnical University "LETI"

    The article proposes a solution of a problem of polarization error compensation for radar object direction finding by means of conical scan method. The solution is considered at signal processing level that makes possible to avoid polarization limitations in antennas en...

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  • publication . Article . 2018
    Open Access
    Authors:
    A. A. Monakov;
    Persistent Identifiers
    Publisher: St. Petersburg Electrotechnical University LETI

    In multilateration systems, Bancroft algorithm is often used to estimate the location of objects. This algorithm is synthesized for satellite navigation systems. The algorithm allows to obtain the location estimation by means of direct method and does not require signif...

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  • publication . Article . 2018
    Open Access Russian
    Authors:
    L. S. Mettus; V. N. Mikhailov; A. B. Khachaturian;
    Persistent Identifiers
    Publisher: Saint Petersburg Electrotechnical University "LETI"

    The article is devoted to the pattern propagation factor of the Earth enabling for more precise determination of the radar station visibility range in case there are reflections from underlying surface. The article provides analytical solution in general form taking int...

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  • publication . Article . 2018
    Open Access
    Authors:
    Roman E. Semernya; Sergey Chernyshev; Artem Vilenskiy; Eduard O. Mozharov;
    Persistent Identifiers
    Publisher: St. Petersburg Electrotechnical University LETI

    This paper considers an algorithm for development of the sixth order compact microstrip bandpass filters with quasi-elliptic characteristics. The proposed technique is applied for synthesis of two filters for the L- and X-band. The recursive computational approach is em...

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  • publication . Article . 2018
    Open Access
    Authors:
    N. V. Mukhin; D. N. Redka; S. A. Tarasov; A. Yu. Oseev; S. Hirsch;
    Persistent Identifiers
    Publisher: St. Petersburg Electrotechnical University LETI

    The object of the study is acoustic metamaterial, which is a steel matrix with a periodic two-dimensional system of cylindrical cavities filled with hydrocarbon mixture. The induced resonances of fluid in cylindrical cavities of the periodic structure are studied for ap...

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  • publication . Article . 2018
    Open Access Russian
    Authors:
    A. D. Volodin; A. L. Efimenko; A. V. Gorlin; D. A. Kuzmin;
    Persistent Identifiers
    Publisher: Saint Petersburg Electrotechnical University "LETI"

    Creation of seismic antennas involves production of a system capable to provide synchronous analog-to- digital data signal conversion of all channels and to broadcast digitized signals to the central computing complex (CCC). The article considers a structure of data tra...

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  • publication . Article . 2018
    Open Access Russian
    Authors:
    N. V. Lysenko; A. M. Monchak;
    Persistent Identifiers
    Publisher: Saint Petersburg Electrotechnical University "LETI"

    The approaches to the evaluation of the efficiency of the functioning of heterogeneous video information systems are considered. It is shown that the hierarchy model as a quantitative description of the structural and functional organization can serve as a means of anal...

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197 research outcomes, page 1 of 20