Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "Makar, A." wg kryterium: Autor

  Lista filtrów
Wyrównaj
Wyświetlanie 1-15 z 27
Tytuł:
Analysis of digital sea bottom models generated using ENC data
Autorzy:
Dupuy, R.
Makar, A.
Powiązania:
https://bibliotekanauki.pl/articles/320873.pdf
Data publikacji:
2011
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
ENC
Digital Bottom Model
Opis:
In the article basis of modeling the surface for spatial presentation of sea bottom hale been included. There have been shown typical, well known, method for generating TIN (Triangulated Irregular Network), GRID and mathematical methods using C++ environment. For presentation the sea bottom ENC (Electronic Navigational Charts) encoded in S-57 Standard have been used.
Źródło:
Annual of Navigation; 2011, 18; 27-36
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of non-uniform B-Splines of 2-nd order for description vertical distribution of sound speed in water
Autorzy:
Makar, A.
Powiązania:
https://bibliotekanauki.pl/articles/332798.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Akustyczne
Tematy:
hydroacoustics
B-splines
sound speed
Opis:
Modeling of the vertical distribution of the sound speed in water is useful during determination of the depth on the basis of the acoustic method, modeling refraction phenomena and determination the trajectory of the acoustic wave. For modeling 1D functions (vertical distribution of the sound speed) and 2D (surface of the sea bottom for hydrography) uniform B-Splines was used. In this paper description of uniform B-Splines and description and application of non-uniform B-Splines have been presented.
Źródło:
Hydroacoustics; 2009, 12; 133-140
1642-1817
Pojawia się w:
Hydroacoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Availability of the GNSS geodetic networks position during the hydrographic surveys in the ports
Autorzy:
Specht, C.
Makar, A.
Specht, M.
Powiązania:
https://bibliotekanauki.pl/articles/116211.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Global Navigation Satellite System (GNSS)
hydrographic survey
IHO S-44
Global Positioning System (GPS)
GLONASS
gedetic network
exclusive order
special order
Opis:
Geodetic network GNSS receivers are more commonly associated with positioning systems used in maritime hydrography. In terms of positioning accuracy when no terrain obstacles are present, they meet international hydrographic surveys standards (S‐44) fully. Those standards are defined as 1m (0.95) for Exclusive Order and 2m (0.95) for Special Order. It is equally as important to ensure access to position which error is not higher than above mentioned maximum values. This is most often determined by the density of port infrastructure. This article presents the results of analysis of availability of hydrographic system that operates based on geodetic GNSS networks. Hydrographic surveys in question were undertaken in inner basins with diverse infrastructure. Three representative types of ports were selected for this reason: fishing type (Hel), medium sized, modern commercial type (Gdynia) and highly congested, narrow canal type (Gdansk – Motlawa). A nonpublic, geodetic GNSS network was used for all surveys. It is worth mentioning that the above network is at the moment the only available network that provides both GPS and GLONASS corrections. The surveys provided evidence that geodetic GNSS networks can be successfully utilised to determine position of hydrographic vessel in low and moderately developed ports as well as in Exclusive and Special Orders. In highly congested ports however, the availability of the above mentioned method of measurement can be insufficient to realise a survey.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2018, 12, 4; 657-661
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dteremnination of spatial orientation of sounding vessel using floating core fluxgate
Autorzy:
Makar, A.
Powiązania:
https://bibliotekanauki.pl/articles/224685.pdf
Data publikacji:
2009
Wydawca:
Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:
nawigacja morska
pomiary batymetryczne
sea navigation
bathymetric survey
Opis:
Determination of spatial orientation of sounding vessel is an essential problem from determination of acoustic wave reflection points in geodesic bathymetric surveys radiated by an echosounder point of view. Pitching, rolling and yawing as a result of wind, wavy motion and vessel movement determine the outlet angle of acoustic wave, trajectory of acoustic ray as a result of refraction, location of reflection point and determined depth on the basis of the distance between the transducer and reflection point measured by the echosounder. In the paper possibilities analyse of floating core fluxgate's application for determination of spatial orientation of sounding vessel have been presented. Compensation of pitching and rolling have only been presented because of sensor limitation.
Źródło:
Reports on Geodesy; 2009, z. 1/86; 123-128
0867-3179
Pojawia się w:
Reports on Geodesy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hydrographic surveys of Wisłoujście fortress area
Autorzy:
Makar, A.
Powiązania:
https://bibliotekanauki.pl/articles/225661.pdf
Data publikacji:
2010
Wydawca:
Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:
badania hydrograficzne
Twierdza Wisłoujście
hydrographic surveys
Wisłoujście Fortress
Opis:
In the close vicinity of the Westerplatte peninsula lies a unique fortification monument - the Wisłoujscie Fortress. The name Wisłoujście (the mouth of the Vistula) dates back to the time when the Vistula had its estuary north of the Wisłoujście Fortress. The site was an area of strategic importance as it gave control of ships moving into and out of Gdańsk. The Fortress is surrounded by shallow water. Hydrographic surveys are important because of navigation safety of small ships and yachts and they are difficult because of limited maneuverability of sounding vessel and limitations in positioning. Results of hydrographic surveys of Wisłoujście Fortress have been presented.
Źródło:
Reports on Geodesy; 2010, z. 1/88; 61-65
0867-3179
Pojawia się w:
Reports on Geodesy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of SNR on determination of location of underwater object by means of acoustics method
Autorzy:
Makar, A.
Powiązania:
https://bibliotekanauki.pl/articles/332590.pdf
Data publikacji:
2001
Wydawca:
Polskie Towarzystwo Akustyczne
Opis:
Localisation of underwater sources is possible by means of measurements of the delay between signals, which are radiated by the source. There are many time delay estimation methods, one of them is the gradient type adaptive algorithm. One of estimation parameters is convergence coefficient, which influences on speed of the estimation process. Selection of the optimal value of this coefficient guarantees achievement of the estimated value of time delay in the shortest time. The value of this coefficient depends on received signals to noise ratio. In this paper has been shown time delay estimation with gradient type adaptive algorithm and factors, which influence on the value oj convergence coefficient. There also has been shown influence of SNR on working of the time delay estimation, which can be used in the underwater source localisation system. For research have been used real acoustics signals radiated by a moving ship.
Źródło:
Hydroacoustics; 2001, 4; 157-160
1642-1817
Pojawia się w:
Hydroacoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Method of determination of acoustic wave reflection points in geodesic bathymetric surveys
Autorzy:
Makar, A.
Powiązania:
https://bibliotekanauki.pl/articles/320673.pdf
Data publikacji:
2008
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
hydrografia
batymetria
pomiary hydroakustyczne
hydrography
batymetry
hydroacoustics surveys
Opis:
The target of the study is development of method of precise determination of water region's co-ordinates for various applications. Selected factors, as dynamics of the sounding vessel and environmental factors are taken into consideration. In spite of possibility of application motion sensors available on the market (more expensive than professional single-beam echo-sounders), an alternative method of determining pitching and rolling has been developed - introduced in a model of precise determining of acoustic ray's reflection co-ordinates - for a ray characterized by non-linear trajectory. It is an alternative for accelerometers used in hydrography and magnetometers with floating cores available on the market. Main theses of the study may be presented as the following: - the vertical sound speed in water has an impact not only on accuracy of the depth measurement but also on trajectory of the acoustic ray, resulting in its non-linear propagation, - having positions of two points known (in their specific locations), there is a possibility of determining pitching and rolling with an accuracy comparable with performance of the motion sensors, - application of the elaborated methods for selected factors determining accuracy of the hydrographic surveys shall influence accuracy of created charts, safety of navigation and efficiency in searching under-water objects in a significant way.
Źródło:
Annual of Navigation; 2008, 14; 1-89
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methods to generate Numerical Models of Terrain for spatial ENC presentation
Autorzy:
Sassais, R.
Makar, A.
Powiązania:
https://bibliotekanauki.pl/articles/320693.pdf
Data publikacji:
2011
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
ENC
numerical models
GIS
Opis:
In the paper the methods to generate Numerical Models of Terrain for spatial visualization have been shown. For spatial visualization the application has been created, uses TIN, GRID methods: inverse distance to a power, nearest neighbour and natural one and NURBS (Non- Uniform Rational B-Splines). Methods have been used for spatial presentation of ENC data.
Źródło:
Annual of Navigation; 2011, 18; 69-81
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modeling of sea bottom using bézier pieces
Autorzy:
Makar, A.
Powiązania:
https://bibliotekanauki.pl/articles/331993.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Akustyczne
Opis:
In the article the essence of creating Bézier piece, determination its points, degree elevation and division have been shown. These issues are essential during creation the digital terrain model DTM. For creation the sea bottom model bathymetric surveys of Slupsk Bank have been used. The visualization of sea bottom with detected underwater object recorded by multibeam echosounder using Bézier pieces has been presented.
Źródło:
Hydroacoustics; 2010, 13; 183-190
1642-1817
Pojawia się w:
Hydroacoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modeling of sea bottom using uniform rectangular Bézier pieces
Autorzy:
Makar, A.
Powiązania:
https://bibliotekanauki.pl/articles/331828.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Akustyczne
Opis:
In the article the essence of uniform rectangular Bézier pieces have been shown. These issues are essential during creation the digital terrain model DTM. For creation the bottom model bathymetric surveys of Motlawa River have been used. The visualization of the bottom using uniform rectangular Bézier pieces has been presented.
Źródło:
Hydroacoustics; 2011, 14; 143-148
1642-1817
Pojawia się w:
Hydroacoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modeling of the constant sound speed surface in water using bicubic Hermites pieces
Autorzy:
Makar, A.
Powiązania:
https://bibliotekanauki.pl/articles/331868.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Akustyczne
Opis:
In the paper theoretical basics of interpolation method of one variable using basis Hermite’s polynomials have been presented. There have been described local Hermite’s bases and polynomial interpolation relationship. The metgod has been used for description the vertical distribution of the sound speed in water in Five Whistles Corner area in the Motlawa estuary in Gdansk Nowy Port.
Źródło:
Hydroacoustics; 2012, 15; 131-136
1642-1817
Pojawia się w:
Hydroacoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modeling of vertical distribution of sound speed in water using bézier courves
Autorzy:
Makar, A.
Powiązania:
https://bibliotekanauki.pl/articles/331995.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Akustyczne
Opis:
Modeling of the vertical distribution of the sound speed in water is essential problem of hydroacoustics. There are many mathematics methods of modeling one variable functions. In the paper modeling of the one variable function for the vertical distribution of the sound speed in water using Bezier functions have been shown.
Źródło:
Hydroacoustics; 2010, 13; 177-182
1642-1817
Pojawia się w:
Hydroacoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modeling of vertical distribution of sound speed in water using rational Bézier courves
Autorzy:
Makar, A.
Powiązania:
https://bibliotekanauki.pl/articles/331836.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Akustyczne
Opis:
Modeling of one variable and two variables functions can be used in hydroacoustics and hydrography i.e. for modeling the vertical distribution of the sound speed in water (one variable functions) or sea bottom (two variable functions). There are many mathematics methods of modeling one variable functions. In the paper modeling of the one variable function for the vertical distribution of the sound speed in water using rational Bézier functions have been shown.
Źródło:
Hydroacoustics; 2011, 14; 149-156
1642-1817
Pojawia się w:
Hydroacoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Positions accuracy determinated by means of acoustic method
Autorzy:
Makar, A.
Naus, K.
Powiązania:
https://bibliotekanauki.pl/articles/331606.pdf
Data publikacji:
2000
Wydawca:
Polskie Towarzystwo Akustyczne
Opis:
The main goal of this paper is to shown the accuracy zones of hyperbolic system. This system has been used for underwater source localisation. The location of underwater object with relation to the antenna array influences on errors values. Optimal configuration of the antenna array assures the least errors values and the largest operation zone.
Źródło:
Hydroacoustics; 2000, 3; 197-200
1642-1817
Pojawia się w:
Hydroacoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 27

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies