Temat: Global Positioning System

Skocz do pozycji: 1.

Tytuł:: An influence of the covariance between single orbit parameters on the accuracy of observations of the pseudo-ranges and phase differences
Autorzy:: Skeivalas, Jonas
Paršeliūnas, Eimuntas
Putrimas, Raimundas
Šlikas, Dominykas
Tematy:: Global Positioning System
ephemeris
Doppler effect
dispersion
geodesy; Pokaż więcej
Data publikacji:: 2020
Powiązania:: https://bibliotekanauki.pl/articles/221830.pdf Link otwiera się w nowym oknie
Źródło:: Metrology and Measurement Systems; 2020, 27, 1; 131-140
0860-8229
Pojawia się w:: Metrology and Measurement Systems
Opis:: The possibilities to improve values of the satellite orbit elements by employing the pseudo-ranges and differences of carrier phase frequencies measured at many reference GPS stations are analysed. An improvement of orbit ephemeris is achieved by solving an equation system of corrections of the pseudo-ranges and phase differences with the least-squares method. Also, equations of space coordinates of satellite orbit points expressed by ephemeris at fixed moments are used. The relation between the accuracy of the pseudo-ranges and phase differences and the accuracy of the satellite ephemeris is analysed. Formulae for estimation of the influence of the ephemeris on the measured pseudo-ranges and phase differences and for prediction of the accuracy of the pseudo-ranges and phase differences were obtained. An influence of the covariance between single orbit parameters on the accuracy of the pseudo-ranges and phase differences is detected.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 2.

Tytuł:: An Interactive Graphical User Interface Module for Soldier Health and Position Tracking System
Autorzy:: Swedan, Wesam F.
Al Issa, Huthifa A.
Aloqoul, Ayat
Alkofahi, Hadeel
Obeidat, Rahaf
Tematy:: graphical user interface
global positioning system
global system for mobile
bioinformatics
tracking system; Pokaż więcej
Data publikacji:: 2022
Powiązania:: https://bibliotekanauki.pl/articles/2124771.pdf Link otwiera się w nowym oknie
Źródło:: International Journal of Electronics and Telecommunications; 2022, 68, 3; 571-571
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Opis:: Soldiers are the backbone of any armed force. They usually lose their lives due to the lack of medical assistance in emergency situations. Furthermore, army bases face problems due to the inability to track soldiers’ locations in the field. Hence, this paper proposes an interactive graphical user interface module (IGUIM) for soldiers’ bioinformatics acquisition and emergency reaction during combat, a global positioning system (GPS) is used to track soldiers’ locations through a device carried by the soldier. Soldiers’ bioinformatics are gathered using health monitoring biosensors, bidirectional communication between the soldiers and the army base is established via a global system for mobile (GSM). The proposed interactive module aims to enumerate the soldiers on the battlefield within a database that easily facilitates health monitoring, position tracking and bidirectional communication with each soldier through their identification number. The proposed IGUIM will increase the rate of soldiers’ survival in emergencies, which contributes to preserving the human resources of the army during combat.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 3.

Tytuł:: Przeliczanie i transformacja współrzędnych pomiędzy układami odniesienia
On version and transformation of coordinates between reference systems
Autorzy:: Mendel, M.
Tematy:: geoida
GPS
układy współrzędnych
Global Positioning System
coordinate systems; Pokaż więcej
Data publikacji:: 2011
Powiązania:: https://bibliotekanauki.pl/articles/235845.pdf Link otwiera się w nowym oknie
Źródło:: Problemy Techniki Uzbrojenia; 2011, R. 40, z. 119; 7-19
1230-3801
Pojawia się w:: Problemy Techniki Uzbrojenia
Opis:: W artykule przedstawiono zagadnienia związane przeliczaniem i transformacją współ- rzędnych w odwzorowaniach kartograficznych. Zamieszczono gotowe wzory i algorytmy służące do realizacji zadań związanych z przeliczaniem i transformacją współrzędnych. Objaśniono również podstawowe pojęcia używane w geodezji i kartografii.
In the paper the issues concerning conversion and transformation of coordinates in map projections were presented. The formulae and the algorithms for carrying out the tasks connected with the conversion and the transformation of coordinates were quoted. The basic terms used in geodesy and cartography were also explained.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 4.

Tytuł:: Rozwój koncepcji bezzałogowego holownika szybowców i dronów towarowych o napędzie elektrycznym
The development of a concept of an unmanned glider-tug and cargo unmanned aerial vehicle with electric drive
Autorzy:: Jafernik, Henryk
Muszyński, Tomasz
Puzio, Łukasz
Tematy:: BSP
holownik
GPS
Galileo
UAV
tug
Global Positioning System (GPS); Pokaż więcej
Data publikacji:: 2022
Powiązania:: https://bibliotekanauki.pl/chapters/58713904.pdf Link otwiera się w nowym oknie
Źródło:: Wykorzystanie technik nawigacyjnych w lotnictwie. Część II (seria: Współczesna Nawigacja, tom IV); 47–58
9788366514461
Opis:: W rozdziale przedstawiono kilka wybranych propozycji zastosowań BSP rozwijanych w Polsce oraz opis projektu bezzałogowego holownika, nowego rozwiązania technicznego zgłoszonego do urzędu patentowego w grudniu 2017 r. i rozwijanego do chwili obecnej. Proponowany system holu składa się z uniwersalnej stacji naziemnej kontroli lotów bezzałogowców, BSP holownika i dodatkowego systemu sterowania umieszczonego na obiekcie holowanym. Proponowane rozwiązanie ma na celu zmniejszenie kosztów eksploatacji oraz poprawę osiągów statków powietrznych o napędzie elektrycznym.
The article presents a few selected ideas for AUV usage which are being developed in Poland as well as the description of a project of an unmanned tug, a new technological solution which was submitted to the Patent Office in December 2017 and which has been being developed since then. The proposed towing system consists of a universal ground-based air traffic control station for unmanned flights, an AUV-tug and an additional control system placed on the towed object. The proposed solution aims at maintenance costs reduction and increase of performance of aircrafts with electric drive.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 5.

Tytuł:: ASI activities in CEGROP II framework: Discussion of the results
Autorzy:: Vespe, F.
Garramone, L.
Marzo, C.
Rutigliano, P.
Pacione, R.
Tematy:: osuwiska
GPS
system pozycjonowania obiektów
CERGOP
landslides
Global Positioning System; Pokaż więcej
Data publikacji:: 2006
Powiązania:: https://bibliotekanauki.pl/articles/224452.pdf Link otwiera się w nowym oknie
Źródło:: Reports on Geodesy; 2006, z. 1/76; 201-215
0867-3179
Pojawia się w:: Reports on Geodesy
Opis:: ASI/CGS contribution to CERGOP II project covered the following topics: landslide monitoring, production and quality check of zenith total delays estimated for a global as well as regional GPS networks devoted to meteorology applications, RTK and navigation tests, critical analysis of GPS long time series helpful for geodynamic as well atmospheric investigations. For what concern the landslides monitoring the two sites under investigation: Aliano and Avigliano are located in Basilicata region, (South of Italy). These sites are affected by a dramatic creep of the ground which in the past was the cause of severe damages to the buildings and roads in the areas. We will show the state of art of the activities comparing GPS with Perrnanent Scatter IN-SAR technique For what concern the routine production of ZTD we will show a critical comparisons of our solutions with radio balloon observations and a discussion about the assessment of their reliability. Finally the results of a navigation experiment by using differential correction provided by EUREF-NTRIP service will be shown.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 6.

Tytuł:: Wyznaczanie różnic wysokości z wykorzystaniem niwelacji satelitarnej
The height differences appointment using satellite leveling
Autorzy:: Dawidowicz, K.
Lamparski, J.
Świątek, K.
Tematy:: Globalny System Pozycyjny
niwelacja satelitarna
Global Positioning System
satellite leveling; Pokaż więcej
Data publikacji:: 2008
Powiązania:: https://bibliotekanauki.pl/articles/341241.pdf Link otwiera się w nowym oknie
Źródło:: Acta Scientiarum Polonorum. Geodesia et Descriptio Terrarum; 2008, 7, 1; 29-34
1644-0668
Pojawia się w:: Acta Scientiarum Polonorum. Geodesia et Descriptio Terrarum
Opis:: W pracy przedstawiono analizy dotyczące wpływu długości sesji obserwacyjnych GPS na wyniki wyznaczania różnic wysokości metodą niwelacji satelitarnej. W tym celu wykorzystano, przeprowadzone w ciągu kilku dni, ośmiogodzinne obserwacje wykonane na trzech punktach sieci testowej. Z przeprowadzonych analiz wynika, że sesje dwugodzinne mogą okazać się zbyt krótkie do wyznaczenia wysokości z dokładnością do 1–2 cm.
The paper presents analyses concerning the influence of length GPS observational session on heights differences appointment results with satellite leveling. In elaboration the eight-hour GPS observation, carried within several days, on three points of test networks were used. Carried analyses have exerted that the two-hour GPS session can be too short for points appointment with 1-2 cm accuracy.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 7.

Tytuł:: Experimental studies on the relationship between HDOP and position error in the GPS system
Autorzy:: Specht, Mariusz
Tematy:: Global Positioning System
GPS
Horizontal Dilution of Precision
HDOP
position error; Pokaż więcej
Data publikacji:: 2022
Powiązania:: https://bibliotekanauki.pl/articles/2052120.pdf Link otwiera się w nowym oknie
Źródło:: Metrology and Measurement Systems; 2022, 29, 1; 17-36
0860-8229
Pojawia się w:: Metrology and Measurement Systems
Opis:: 2D position error in the Global Positioning System GPS depends on the horizontal dilution of precision (HDOP) and User Equivalent Range Error UERE. The non-dimensional HDOP coeffcient, determining the influence of satellite distribution on the positioning accuracy, can be calculated exactly for a given moment in time. However, the UERE value is a magnitude variable in time, especially due to errors in radio propagation (ionosphere and troposphere effects) and it cannot be precisely predicted. The variability of the UERE causes the actual measurements (despite an exact theoretical mathematical correlation between the HDOP value and the position error) to indicate that position errors differ for the same HDOP value. The aim of this article is to determine the relation between the GPS position error and the HDOP value. It is possible only statistically, based on an analysis of an exceptionally large measurement sample. To this end, measurement results of a 10-day GPS measurement campaign (900,000 fixes) have been used. For HDOP values (in the range of 0.6-1.8), position errors were recorded and analysed to determine the statistical distribution of GPS position errors corresponding to various HDOP values. The experimental study and statistical analyses showed that the most common HDOP values in the GPS system are magnitudes of: 0.7 ( = 0.353) and 0.8 ( = 0.432). Only 2.77% of fixes indicated an HDOP value larger than 1. Moreover, 95% of measurements featured a geometric coeffcient of 0.973 - this is why it can be assumed that in optimal conditions (without local terrain obstacles), the GPS system is capable of providing values of HDOP ≤ 1, with a probability greater than 95% (2). Obtaining a low HDOP value, which results in a low GPS position error value, calls for providing a high mean number of satellites (12 or more) and low variability in their numer.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 8.

Tytuł:: Korean WA-DGNSS User Segment Software Design
Autorzy:: Shah, S. T.
Choi, W.S.
Han, W.Y.
Yun, H.
Kee, C.
Tematy:: global navigation satellite system (GNSS)
Global Positioning System GPS
User Segment
GPS Data Processing Classes; Pokaż więcej
Data publikacji:: 2013
Powiązania:: https://bibliotekanauki.pl/articles/116066.pdf Link otwiera się w nowym oknie
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2013, 7, 1; 69-74
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Opis:: Korean WA‐DGNSS is a large scale research project funded by Ministry of Land, Transport and Maritime Affairs Korea. It aims to augment the Global Navigation Satellite System by broadcasting additional signals from geostationary satellites and providing differential correction messages and integrity data for the GNSS satellites. The project is being carried out by a consortium of universities and research institutes. The research team at Electronics and Telecommunications Research Institute is involved in design and development of data processing softwares for wide area reference station and user segment. This paper focuses on user segment software design. Korean WA‐DGNSS user segment software is designed to perform several functions such as calculation of pseudorange, ionosphere and troposphere delays, application of fast and slow correction messages, and data verification. It is based on a layered architecture that provides a model to develop flexible and reusable software and is divided into several independent, interchangeable and reusable components to reduce complexity and maintenance cost. The current version is designed to collect and process GPS and WADGNSS data however it is flexible to accommodate future GNSS systems such as GLONASS and Galileo.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 9.

Tytuł:: Investigate Bending Effect of Wearable GPS Patch Antenna with Denim and Polyester Fabric Substrate
Autorzy:: Radhakrishna, Kavinesh S.
Shakhirul, M. S.
Lee, Y. S.
Khairina, K. N.
Syafiqah, A. R. A.
Tematy:: denim and polyester fabric substrates
textile antenna
global positioning system (GPS); Pokaż więcej
Data publikacji:: 2023
Powiązania:: https://bibliotekanauki.pl/articles/27311855.pdf Link otwiera się w nowym oknie
Źródło:: International Journal of Electronics and Telecommunications; 2023, 69, 2; 225--231
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Opis:: In high technologies today, wearable devices have become popular. Wearable technology is a body sensing system that supports application of health observance and tracking through a wearable Global Positioning System (GPS). The design of the patch antennas is highly significant for the brilliance of the wearable patch antennas. This paper focuses on analyzing the bending effect on return loss and frequency between three types of GPS patch antenna. Types of GPS patch antennas that have been designed in this project are with different substrates and different designs. The wearable patch antenna has been designed and analyse using CST software. As a result, able to analysis the reflection coefficient (S11), radiation patterns, and analytical approach for patch antenna bending effect were obtained.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 10.

Tytuł:: Automatic system for GPS tropospheric delay estimation, on-line GPS processing user service and analysis of the results
Autorzy:: Kruczyk, M.
Liwosz, T.
Rogowski, J. B.
Tematy:: system pozycjonowania obiektów
GPS
geodezja satelitarna
troposfera
Global Positioning System
satellite geodesy
tropospheric delay; Pokaż więcej
Data publikacji:: 2006
Powiązania:: https://bibliotekanauki.pl/articles/224483.pdf Link otwiera się w nowym oknie
Źródło:: Reports on Geodesy; 2006, z. 1/76; 139-151
0867-3179
Pojawia się w:: Reports on Geodesy
Opis:: This paper describes automatic system for GPS tropospheric delay estimation developed at the Institute of Geodesy and Geodetic Astronomy of the Warsaw University (WUT) LAC. The system is based on BPE (Bernese Processing Engine) and utilizes UltraRapid orbits and EUREF weekly coordinates. We describe processing strategies used in this application and report various experiences leading to start of NRT tropospheric service. We have made many statistical quality analysis of the resulting solutions. Accurate comparisons with ZTD combined product (EPN and IGS) and radiosounding data has been made. The poster presents also other research areas on the GPS data processing performed especially the Internet based service for an on-line GPS processing of the users data. Finally we present some other ideas of our interest how to use tropospheric delay in meteorology and climatology.
Dostawca treści:: Biblioteka Nauki

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