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O. V. Odokienko

Bio: O. V. Odokienko is an academic researcher from National Aerospace University – Kharkiv Aviation Institute. The author has contributed to research in topics: Signal processing & Radar imaging. The author has an hindex of 2, co-authored 6 publications receiving 20 citations.

Papers
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Proceedings ArticleDOI
01 Oct 2016
TL;DR: In this article, a block diagram of signal processing in the Dicke-type radiometer was developed on the basis of the theory of optimal statistical decisions and parameters estimates of probabilistic distributions.
Abstract: Algorithms and block diagrams of signal processing in the Dicke-type radiometer are synthesized on the basis of the theory of optimal statistical decisions and parameters estimates of probabilistic distributions. Limit errors of required parameters estimates in the received optimal algorithms and potential fluctuation sensitivity of the developed block diagrams are investigated.

11 citations

Proceedings ArticleDOI
21 Apr 2015
TL;DR: The optimal algorithm of multiband spatio-temporal radiometric signal processing is synthesized and analytical expressions both for the potential fluctuation sensitivity of the system designed according to the algorithm and for the ambiguity function of multi-iband radiometric systems are deduced.
Abstract: The optimal algorithm of multiband spatio-temporal radiometric signal processing is synthesized. Analytical expressions both for the potential fluctuation sensitivity of the system designed according to the algorithm and for the ambiguity function of multiband radiometric systems are deduced. An example of the theory application is demonstrated.

9 citations

Proceedings ArticleDOI
02 Jul 2019
TL;DR: In this article, the estimates of communication outages along slant Earth-Space links and near-surface links in the worst periods of the year were made for the first time on the territory of Ukraine with usage a consideration of microclimatic point of view.
Abstract: The estimates of communication outages along slant Earth-Space links and near-surface links in the worst periods of the year were made for the first time on the territory of Ukraine with usage a consideration of microclimatic point of view. These calculations were based on the cycle of continuous rain rate observations as well as of experimental radiometric observations of atmospheric radio-heat radiation at a frequency of 39 GHz in Kharkov. The statistical estimations of meteorological situations were determined for the frequencies 28 GHz, 38 GHz, 60 GHz and 94 GHz.

4 citations

Proceedings ArticleDOI
01 Feb 2018
TL;DR: Radiometric complex for atmosphere research at 12 and 94 GHz frequencies was developed in this article, and the choice of both frequencies for effective problem solution is justified and complex block diagram was developed.
Abstract: Radiometric complex for atmosphere research at 12 and 94 GHz frequencies was developed. Choice of both frequencies for effective problem solution is justified and complex block diagram was developed. Reliability of theoretical results is proved by experimental measurements. Such atmosphere researches are very important for developing of recommendations for the introduction of 5G telecommunications in Ukraine (in conducting regional studies) and Europe (when combining the results of researches carried out in the countries of the European Union).

2 citations

Proceedings ArticleDOI
21 Sep 2020
TL;DR: Inverse filters are proposed to improve image quality and the influence of errors in calculating the ambiguity functions on the quality of image filtering is estimated.
Abstract: An algorithm has been synthesized for processing ultra-wideband spatio-temporal signals providing the formation of radio images from aircraft. A feature of the algorithm is the implementation of the active-passive mode of operation of the radar, which provides for the emission of an ultra-wideband signal and the processing of reflected signals by methods of passive multi-channel radar with external coherence. This allows to take pictures in the field of view in the direction of ±20° from the nadir. The algorithm generates a radio image of high spatial resolution through the accumulation of the signal during the movement of the aircraft, the use of several spatially separated antennas and a wide frequency band of received signals. A structural diagram of the radar is developed and its operation is simulated. Radar ambiguity functions investigated. Based on them, inverse filters are proposed to improve image quality and the influence of errors in calculating the ambiguity functions on the quality of image filtering is estimated.

1 citations


Cited by
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Journal ArticleDOI
TL;DR: In this paper , the expected values of UAV radio-heat contrasts were determined for different weather conditions and wave ranges and their frequency dependence on brightness temperature and composite fiberglass materials were analyzed.
Abstract: This work describes the procedure for determining the expected values of UAV radio-heat contrasts () and discusses its angular dependences, as well as the estimation of UAV detection distances at four points cm and mm ranges (12 GHz, 20 GHz, 34 GHz, and 94 GHz). This paper reveals the pronounced frequency dependence on brightness temperature () and of a fiberglass unmanned aerial vehicle (UAV) made from composite fiberglass materials. The quantified experiments are conducted against a sky background under various weather conditions and wave ranges. The qualitative physical interpretation of these properties and their frequency dependence is proposed, reflecting the coefficient values and radio brightness of the background. The weak influence of weather on the observed UAVs in the X and Ku bands are demonstrated along with the multiple decreasing detection characteristics and advantages of the W band under bad weather conditions (the appearance of rain or thick cloud). This work presents data on the values of UAV contrasts, observed against the background of the sky and the regularities noted could be useful for predicting the effectiveness of the proposed radiometric detection and tracking system.

17 citations

Proceedings ArticleDOI
01 Sep 2018
TL;DR: The main feature of the developed radar lies in the signal processing algorithm that combines methods of active (the presence of probing UWB signal) and passive (aperture synthesis) radiolocation, which allows the transition from processing of UWB signals with the continuum spectrum to processing multi-band signal processing.
Abstract: To solve problems of high-precision mapping of spatially extended objects regardless of weather conditions and time of day, radar imaging systems are used. The globality and efficiency of the survey is provided by the placement of radars on aerospace carriers. At the same time, there has been a proliferation of side-scan radars (providing a wide viewing range with a low spatial resolution) and antenna aperture synthesis radars (these provide high resolution in spatial coordinates, which depends on the type of survey). Radars used for imaging are classified according to various characteristics determining their advantages and disadvantages. Among such features, we can also distinguish the radar viewing area, which is currently limited to angles of 15° to 60° to the right and left of the observation in the nadir. The viewing range from -15° to + 15° from the nadir is characterized by a low resolution in range and traditionally is not visible by these radars (the socalled “blind zone”). In this regard, an alternative system for building radar images from aerospace carriers is proposed. It will provide imaging with high angular resolution of the viewing range from -15° to + 15° from the nadir. The main feature of the developed radar lies in the signal processing algorithm that combines methods of active (the presence of probing UWB signal) and passive (aperture synthesis) radiolocation. In addition, the radar implements a new method of “spectral aperture synthesis,” which allows the transition from processing of UWB signals with the continuum spectrum to processing multi-band signal processing.

10 citations

Proceedings ArticleDOI
01 Sep 2016
TL;DR: The algorithm of spatio-temporal ultrawideband signal processing for radiometric imaging is synthesized and investigated and the possibility of ambiguity function formation with one main lobe in the UWB cross-correlation and compensation system with ultra-sparse antenna array is substantiated.
Abstract: The algorithm of spatio-temporal ultrawideband (UWB) signal processing for radiometric imaging is synthesized and investigated. Analytical expressions for the limiting error of the radiometric image estimate and ambiguity function of system are derived. The possibility of ambiguity function formation with one main lobe in the UWB cross-correlation and compensation system with ultra-sparse antenna array is substantiated. The simulation examples of radiometric imaging are shown.

10 citations

Proceedings ArticleDOI
01 Feb 2016
TL;DR: Using modern information about the statistical synthesis of radio-engineering systems, the optimal algorithm for the formation of the radiometric imaging (RMI) is synthesized and investigated with three-antenna ultra-wideband radiometric complex (RMC).
Abstract: Using modern information about the statistical synthesis of radio-engineering systems, the optimal algorithm for the formation of the radiometric imaging (RMI) is synthesized and investigated with three-antenna ultra-wideband radiometric complex (RMC). Expressions for the limiting error and the fluctuation sensitivity of RMC are found.

8 citations

Proceedings ArticleDOI
01 Sep 2016
TL;DR: In this article, the spectral method for filling the spatio-spectral sensitivity (SSS) domain in aperture synthesis systems is proposed, and it is shown that instead of filling the SSS domain of the serial synthesis using one radio-interferometer with variable base expedient to use fixed antennas and ultra wideband (UWB) signals processing, the criterion for the uniqueness of the main lobe of the ambiguity function of the two-antenna array using UWB signals processing is obtained.
Abstract: The methods of filling the domain of spatio-spectral sensitivity (SSS) are considered The spectral method for filling the SSS domain in aperture synthesis systems is proposed It is shown that instead of filling the SSS domain of the serial synthesis using one radio-interferometer with variable base expedient to use fixed antennas and ultra-wideband (UWB) signals processing The criterion for the uniqueness of the main lobe of the ambiguity function of the two-antenna array using UWB signals processing is obtained

5 citations