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1
Content available Analysis of the precision of determination of aircraft coordinates using EGNOS+SDCM solution
Krasuski Kamil, Lalak Marta, Gołda Paweł, Ciećko Adam, Grunwald Grzegorz, Mrozik Magda, Kozuba Jarosław
Archives of Transport
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2023
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Vol. 67, iss. 3
105--117
EN
This paper presents an algorithm for determining the precision parameter for aircraft position coordinates based on a combined GPS/EGNOS and GPS/SDCM solution. The proposed algorithm uses a weighted average model that combines a single GPS/EGNOS and GPS/SDCM position navigation solution to determine the resulting aircraft coordinates. The weighted mean model include the linear coefficients as a function of: the inverse of the number of tracked GPS satellites for which EGNOS and SDCM corrections have been generated, and the inverse of the geometric coefficient of the PDOP (Position Dilution of Precision). The corrections between the single GPS/EGNOS and GPS/SDCM solution to the aircraft's resultant coordinates are then calculated on this basis. Finally, the standard deviation for the aircraft resultant BLh (B-Latitude, L-Longitude, h-ellipsoidal height) coordinates is calculated as a measure of precision. The research experiment used recorded on-board GPS+SBAS data from two GNSS receivers mounted on a Diamond DA 20-C1 aircraft. The test flight was carried out on the Olsztyn-Suwałki-Olsztyn route. The calculations of aircraft position based on GPS/EGNOS and GPS/SDCM solution were performed in the RTKLIB v.2.4.3 program in the RTKPOST module. Next, aircraft resultant coordinates and standard deviations were computed in Scilab v.6.0.0 software package. Based on the tests performed, it was found that for the Trimble Alloy receiver, the standard deviation values for the ellipsoidal coordinates BLh of the aircraft do not exceed 1.77 m. However, for the Septentrio AsterRx2i receiver, the values of standard deviations for the aircraft's ellipsoidal BLh coordinates do not exceed 5.04 m. The use of linear coefficients as the inverse of the number of tracked GPS satellites with SBAS corrections in the GPS/EGNOS+GPS/SDCM positioning model resulted in a reduction in standard deviations of approximately 50-51% relative to the solution with linear coefficients calculated as the inverse of the PDOP parameter. In paper, the standard deviation was also obtained using arithmetic mean model. However the values of standard deviation from weighted mean model are lower than arithmetic mean model.
2
Geometryczne środki terenu i ich znaczenie
Bednarek Stanisław
Przegląd Geodezyjny
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2022
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R. 94, nr 8
19--24
PL
W artykule podano definicje geometrycznych środków terenu i opisano metody obliczania ich współrzędnych. Podano również współrzędne geograficzne geometrycznych środków terytorium Polski i ich zmiany. W drugiej części artykułu przedyskutowano położenie środków terenu i ich znaczenie praktyczne na przykładach terenów o różnym kształcie.
EN
Definition of the geometric centers of a area are given and methods o their coordinates computations are described in this article. Geographic coordinates of the geometric centers of Poland territory are also given. Geometric centers localization and their practical significance are discussed in the second part of this article at examples of areas having a different shapes.
3
Content available Path planning optimization and object placement through visual servoing technique for robotics application
Patel Sumitkumar, Israni Dippal, Shah Parth
Journal of Automation Mobile Robotics and Intelligent Systems
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2020
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Vol. 14, No. 1
39--47
EN
Visual servoing define a new methodology for vision based control in robotics. Vision based action involve number of actions that move a robot in response of results of camera analysis. This process is important to operate and help robot to achieve a specific goal. The main purpose of visual servoing consists of considering a vision system by specific sensor dedicated to involve control servo loop and task. In this article, three visual control scheme: Image Based Visual Servoing (IBVS), Position Based Visual Servoing (PBVS) and Hybrid Based Visual Servoing (HBVS) are illustrated. The different terminologies are represented through effective workflow of robot vision. IBVS method concentrate on the image features that are immediately available in the image. This experiment is performed by estimating distance between camera and object. PBVS consist of moving object 3-D parameters to estimate measurement. This paper showcases PBVS using kuka robot model. HBVS uses the 2D and 3D servoing by combining visual sensors also it overcomes challenges of previous two methods. This paper represents HBVS method using IPR communication robot model.
4
Content available remote Peculiarities of the main planning works for building noise-barrier high constructions
Burak K. O., Lysko B. O., Mykhailyshyn V. P.
Journal of New Technologies in Environmental Science
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2018
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Vol. 2, nr 3
140--145
EN
One of the ways to protect the city from noise is to build noise barrier cranes that will protect the rest of the micro region buildings from noise. When building such high-altitude buildings, marking engineering-geodesic works are one of the most important and at the same time complicated stages of construction. In this work we will focus on creating the detailed methodology, that will solve the problems by the methods of non-linear programming, by minimizing the influence of random errors of RTN decisions. To define the accuracy of the algorithm, experimental works were accomplished on the reference polygon in the conditions of construction site. The suggested analytical solution of providing the projected construction size and the mutual allocation between it by the way of looking for optimal parameters of transformation between the genplan coordinates system and USK-2000 solves the problem of the errors of the horizontal location of geodesic network points.
5
Content available Implementacja alternatywnych algorytmów do definiowania parametrów transformacji systemu USK-2000 i układu współrzędnych ogólnego położenia podczas stabilizacji
Burak K. O., Lysko B. O.
Archiwum Instytutu Inżynierii Lądowej
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2018
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Nr 27
49--60
PL
Projektowanie i analiza algorytmu transformacji współrzędnych z ogólnego układu współrzędnych USK-2000 i odwrotnie, minimalizacja wpływu losowych błędów decyzji RTN i możliwość wyeliminowania błędów podstawowych we współrzędnych geodezyjnych punktów bazowych, poprzez zapewnienie optymalnej korelacji współrzędnych punktu w dwóch układach za pomocą metody iteracji i jej eksperymentalnego dowodu. Aby określić dokładność algorytmu, wykonano zarówno model, jak i prace eksperymentalne na wieloboku odniesienia w warunkach budowy. Proponowany algorytm obliczania, oparty na metodzie iteracji i funkcji celu, minimalizujący długości wektora, które nie są zgodne z współrzędnymi otrzymanymi z pomiarów, pozwala na przekształcenie współrzędnych punktu w obszarze konstrukcyjnym z dokładnością 1 mm. Praca koncentruje się na zastosowaniu metody iteracji do transformacji punktów i realizacji celu, która minimalizuje długości wektorów, które nie są zgodne ze współrzędnymi, wynikającymi z pomiarów i obliczeń. Takie podejście rozwiązuje problem błędów poziomej lokalizacji geodezyjnych punktów sieci i błędów w definiowaniu współrzędnych punktów zwrotnych czerwonych linii i istniejących konstrukcji.
EN
The purpose of the research is designing and analyzing the algorithm of coordinates transformation from the general layout coordinate system in USK-2000 and conversely, minimizing the influence of random errors of RTN corrections and opportunity to eliminate crude errors in the coordinates of geodesic base points, by providing the optimal correlation of point coordinates in two systems with the help of iteration method and its experimental proof. To define the accuracy of the algorithm, both model and experimental works were accomplished on the reference polygon in the conditions of construction site. The suggested algorithm of calculation, that is based on the method of iteration and objective function, that minimizes the lengths of vector, that do not comply with the coordinates received from the measurements allows to transform the point coordinates of the construction area with the mm accuracy. The work focuses on using the iteration method for transformation of the points and implementation of the objective, that minimizes the vector lengths, that are not consistent with the coordinates, resulting from the measurements and calculations. Such approach solves the problem of the errors of the horizontal location of geodesic network points and errors in defining the coordinates of turning points of red lines (projected system of lines that regulates the construction process; any building should not cross the red lines) and existing constructions.
6
Content available The use of Call For Fire procedures when executing fire missions determination of target coordinates-Part I
Krzyżanowski S., Piontek J.
Zeszyty Naukowe / Wyższa Szkoła Oficerska Wojsk Lądowych im. gen. T. Kościuszki
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2016
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Nr 3
37--51
EN
This paper presents the possibility of using CALL FOR FIRE procedures during the execution of fire missions in artillery subunits according to national procedures. The conducted analyzes concerned the possibility of using data obtained from an observer in accordance with the CFF procedure at the point of fire control during the execution of fire tasks. It has been described in detail how to determine target coordinates, taking into account all the differences between the CFF procedure and the national procedures for determining settings in artillery subunits.
7
Content available remote A New Approach for the Reconstruction of Object-Based Images in Discrete Tomography
Brocchi S.
Fundamenta Informaticae
|
2014
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Vol. 135, nr 1/2
43--57
EN
In this paper we tackle the problem of the reconstruction of object based images, specifically formed by a set of circles inside a ring. By analyzing the projections of the image, we are able to determine some coordinates corresponding to interest points that give significant information about features of the image of aid in the reconstruction. Our approach yields promising results in comparison to other methods in literature. Finally, we discuss how a similar approach could be extended to more complex problems deriving from tomographic applications, in order to develop an efficient method exploiting the prior knowledge assumed on an image.
8
Content available Local improvement of the transformation parameters of coordinates
Savchuk S., Tymoshenko O.
Reports on Geodesy
|
2006
|
z. 1/76
227-231
9
Content available Analysis of coordinates change of SHAZ GPS permanent station
Savchuk S., Zablotska O., Zablotskyj F.
Reports on Geodesy
|
2006
|
z. 1/76
253-259
10
Content available Współczesne podejście do zagadnienia wyznaczania współrzędnych fotopunktów
Plewako M.
Archiwum Fotogrametrii, Kartografii i Teledetekcji
|
2004
|
Vol. 15
145-147
EN
The ground control points for aerial photogrammetry - how it was done 40 years ago, 20 years ago and how it is done today with the help of GPS instrumentation. Modern methods show their advantage both in time consuming and accuracy. The use o f GPS allows to solve large scale mapping problems that appear in towns, railways, highways etc.
11
Content available Analityczne określenie współrzędnych węzłów konstrukcji prętowej z nieregularnego romboedru
Mroczkowski J., Romaszkiewicz-Białas T.
Journal Biuletyn of Polish Society for Geometry and Engineering Graphics
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2001
|
Vol. 12
35--43
EN
In the study formulas have been derived. permitting to find the coordinates of joints of a space truss made by the partition of the walls of a rhombic dodecahedron /irregular rhombohedron/. Constructing the cover /ceiling, roof/ of buildig structures on the basis of a rhombic dodecahedron is possible in two cases: in horizontal projection. they have the contour of a square, or a regular hexagon /Fig. 1 and 2/. Dividing the rhombic walls of a dodecahedron /Fig.3/ into ..n" equal parts, we will obtain „n" of rhombi similar /homothetic/ to and congruent with the wall. If in this lattice of rhombi we introduce parallel diagonals as cross-braces, we will receiv a truss with two lengths of truss members: the length of sides of rhombi and the length of diagonals. The aim of the study is to define the coordinates of nodes of thus defined truss for both above-mentioned contours of buildings: square and hexagonal. For an assumed room covered with the abowe-mentioned truss the length of a square or hexahedral projection has been denoted „d“ and co-ordinate system „Oxyz” successively as in Fig. 1 and 2 assumed. Naming „i“ and “j” the divided sides of rhombic walls into „n” of equal parts as in Fig. 3, each truss joint has been denoted „Wij“ /i,j=0,…n/. After transformations and on analysis of the made assumptions the coordinates of truss joints finally equal to: [pat tern] 1) for the building of a square plan [pattern] 2) for the building of a hexagon plan [pattern]
12
Content available remote Wzory na układy
Kadaj R.
Geodeta : magazyn geoinformacyjny
|
2000
|
nr 10
25--33
13
Content available remote Osnowy a układy
Kadaj R.
Geodeta : magazyn geoinformacyjny
|
2000
|
nr 12
28--32
14
Content available remote Elipsoidy a układy
Kadaj R.
Geodeta : magazyn geoinformacyjny
|
2000
|
nr 11
15--19
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