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Wyszukujesz frazę "linear measurements" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
The accuracy investigation of point coordinates’ determination using a fixed basis for high-precision geodesy binding
Autorzy:
Litynskyi, Volodymyr
Litynskyi, Svyatoslav
Vivat, Anatolii
Fys, Mykhailo
Brydun, Andrii
Powiązania:
https://bibliotekanauki.pl/articles/106849.pdf
Data publikacji:
2019
Wydawca:
Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:
optimization of linear-angular measurements
linear-angular measurements
coordinates determination
accuracy of coordinates determination
optymalizacja pomiarów liniowo-kątowych
pomiary liniowo-kątowe
określanie współrzędnych
dokładność określenia współrzędnych
Opis:
Modern scanners can perform terrestrial topographic survey with resolution of 1 cm and accuracy of 2 mm in just a few minute‘s time, from the distance of up to 100 meters. However, for surface topographical surveying of large territories or complex industrial objects, it is necessary to conduct geodetic traverses and perform their binding to the points of the geodesic basis. One method of coordinate transferring during surveying is by using the method of inverse linear-angular intersection, which involves the measuring of the respective sides S1, S2 and the β angle between them. This method is more precise than the classical one, which usually contains centring and reduction errors. The linear-angular intersection method can also be used for many applications in engineering geodesy, for laying geodetic traverses, and for binding to the wall based points of ground-surveying.
Źródło:
Reports on Geodesy and Geoinformatics; 2019, 107; 19-23
2391-8365
2391-8152
Pojawia się w:
Reports on Geodesy and Geoinformatics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Algorithms for improving the position determination of an UAV equipped with a single-frequency GPS receiver for low-altitude photogrammetry
Autorzy:
Krasuski, Kamil
Wierzbicki, Damian
Lalak, Marta
Ciećko, Adam
Powiązania:
https://bibliotekanauki.pl/articles/27311750.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
UAV
GNSS measurements
linear elements of exterior orientation
accuracy
Opis:
The article presents the results of research on the development of a method for improving the positioning accuracy of an UAV equipped with a single-frequency GPS receiver for determining the linear elements of exterior orientation in aerial photogrammetry. Thus, the paper presents a computational strategy for improving UAV position determination using the SPP code method and the products of the IGS service. The developed algorithms were tested in two independent research experiments performed with the UAV platform on which an AsteRx-m2 UAS single-frequency receiver was installed. As a result of the experiments, it was shown that the use of IGS products in the SPP code method made it possible to improve the accuracy of the linear elements to the level of about ±2.088 m for X coordinate, ±1.547 m for Y coordinate, ±3.712 m for Z coordinate. The paper also shows the trend of changes in the obtained accuracy in determining linear elements of exterior orientation in the form of a linear regression function. Finally, the paper also applies the SBAS corrections model for the improvement of UAV position calculation and determination of linear elements of exterior orientation. In this case, the improvement in the accuracy of determining the linear elements of exterior orientation is about ±1.843 m for X coordinate, ±1.658 m for Y coordinate, ±7.930 m for Z coordinate. As the obtained test results show, the use of IGS products and SBAS corrections in the SPP code method makes it possible to improve the determination of UAV positions for the use in aerial photogrammetry.
Źródło:
Metrology and Measurement Systems; 2023, 30, 3; 441--459
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A study of the influence of selected transition metals on the solid state Reactivity in a Fe-KClO4 mixture
Autorzy:
Czajka, B.
Foltynowicz, Z.
Wachowski, L.
Powiązania:
https://bibliotekanauki.pl/articles/358387.pdf
Data publikacji:
2014
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
Fe-KClO4 mixture
activators
linear burn rate
electrostatic discharge sensitivity test (EDS)
calorimetric measurements
oxygen conversion
Opis:
The effect of selected transition metal powders (Zn, Ti, Mo and nano-Fe), in the concentration range from 0-5 wt.%, when used as activators in the highly calorific mixture Fe-KClO4 (containing 16 wt.% KClO4), has been studied. It has been established that zinc and molybdenum powders can act as factors in decreasing the activation temperature and increasing the effectiveness of the oxidant used. Titanium powder increases the oxygen conversion rate and the amount of energy released. Iron nano-powder has only a slight influence on the above mentioned parameters.
Źródło:
Central European Journal of Energetic Materials; 2014, 11, 2; 271-283
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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