Browsing by Subject "GNSS"

Now showing 1 - 13 of 13

Access status: Restricted ,
A data acquisition system from the CAN bus and a GPS module using non-volatile mass storage
(Data obrony: 2020-03-10) Kowalik, Michał
Wydział Elektrotechniki, Automatyki, Informatyki i Inżynierii Biomedycznej
Access status: Open Access ,
GNSS-based vehicle terminal for mechanized forestry operations
(2007) Aichhorn, Klaus; Hofmann-Wellenhof, Bernhard; Böheim, Wolfgang; Weimann, Franz; Vallant, Johannes
Dziedzina zastosowań zadań nawigacji w zakresie prac leśnych może być podzielona na dwie podgrupy. W firmie TeleConsult Austria GmbH, zostały opracowane dwa różne przenośne terminale. Są nimi: 1) terminal osobisty - dla wykorzystania przy inwentaryzacji lasu i ręcznej wycince drzew, 2) terminal na pojeździe - dla optymalizacji leśnych procesów logistycznych. W artykule przedstawiono terminal na pojeździe dla mechanizacji prac leśnych i ulepszenia zarządzania leśnymi pracami logistycznymi. Terminal na pojeździe jest stosowany głównie jako pomoc w nawigacji i urządzenie do komunikacji. Określenie pozycji w module nawigacyjnym jest oparte na integracji GPS i EGNOS. Dzięki zastosowaniu wysokoczułego odbiornika GPS/EGNOS, z doskonałą możliwością śledzenia satelity, ciągłe i wiarygodne określenie pozycji jest także możliwe w środowisku leśnym z ograniczoną widocznością horyzontu i słabym sygnałem z satelity pod poszyciem leśnym. Komunikacja i przesyłanie danych pomiędzy pojazdem a biurem leśnym odbywa się przy pomocy urządzenia GSM/GPRS. Display terminala na pojeździe wizualizuje ogólne informacje, punkt docelowy oraz pozycję aktualną pojazdu. Tak więc użytkownik jest efektywnie wspomagany w pracach związanych z nawigacją.
Access status: Open Access ,
Initial analysis of the accuracy of position determination using ASG-EUPOS NAVGEO (RTK VRS) service
(2010) Uradziński, Marcin; Doskocz, Adam
ASG-EUPOS system, as a part of Project EUPOS (European Position Determination System), is a new multifunctional system of precise satellite positioning in Poland. It makes GNSS corrections and raw observations collected at 116 reference stations accessible to the users, what provides precise real time positioning, post-processing and supports navigation in the whole area of Poland. This new system, which is based on reference stations network including EUREF-POL, POLREF and EUVN points, accomplishes ETRF89 reference system. One of the most accurate real time positioning services provided by ASG-EUPOS is NAVGEO service, which is RTK VRS network solution. It enables streaming of RTCM corrections for mobile users by using the latest mobile communication technologies such as GPRS or UMTS in any area covered by a cell-phone network. Noting great potential of RTK technique (enabling positioning to centimeter accuracy), authors decided to put NAVGEO service into test as a potential tool for map and geographical databases updating. Our approach of testing the performance of this service is based on field experiments and the analysis of both the accuracy and availability of RTK data using mobile wireless transmissions. We investigate the advantages and disadvantages of this service. Experiments were conducted on the test marks which were determined by static occupation (below centimeter level of accuracy) under different conditions (opened areas and covered by trees and buildings). All the tests were performed in the various periods of time using the latest Topcon HyperPro GPS/GLONASS receivers.
Access status: Restricted ,
Moduł bezpieczeństwa na jachcie z automatycznym powiadomieniem ratownictwa wodnego
(Data obrony: 2019-12-09) Mańka, Jakub
Wydział Informatyki, Elektroniki i Telekomunikacji
Access status: Restricted ,
Ocena dokładności pomiaru budynków (domów jednorodzinnych) z wykorzystaniem technologii RTN GNSS i metod klasycznych
(Data obrony: 2020-09-18) Miranowicz, Mateusz; Kajfasz, Kajetan
Wydział Geodezji Górniczej i Inżynierii Środowiska
Access status: Restricted ,
Ocena dokładności pomiaru budynków (domów jednorodzinnych) z wykorzystaniem technologii RTN GNSS i metod klasycznych
(Data obrony: 2020-09-18) Kajfasz, Kajetan; Miranowicz, Mateusz
Wydział Geodezji Górniczej i Inżynierii Środowiska
Access status: Open Access ,
Preliminary analysis of the applicability of the GPS PPP method in geodynamic studies
(Wydawnictwa AGH, 2020) Pelc-Mieczkowska, Renata
GNSS station movements as an indicator of the movement of the Earth's crust are determined by many researchers with the use of various position and trend determination methods. One of such methods is PPP method which allows the determination of a trend for the station without a correlation (direct determination of the position of each station separately). To achieve accuracy comparable with relative positioning, there is the need to use external, high‑precision data or models (e.g. precise satellite orbits and clocks, ionosphere and tropo‑ sphere models, etc.) while the PPP method is applied. The main purpose of the presented research is preliminary analyses of the results of processing daily GPS observations from permanent stations with the use of the PPP method. Daily GPS observational data in RINEX format have been acquired from a total of nine selected GNSS permanent stations from the Polish ASG EUPOS and the Ukrainian UA-EUPOS/ZAKPOS systems. As external data for PPP solutions JPL products have been used. A seven‑year time series was created for each station.
Access status: Open Access ,
Studying the sensitivity of satellite altimetry, tide gauge and GNSS observations to changes in vertical displacements
(Wydawnictwa AGH, 2021) Pająk, Katarzyna; Kowalczyk, Kamil; Kaminskis, Jānis; Idzikowska, Magdalena
Tide gauge observations provide sea level relative to the Earth's crust, while satellite altimetry measures sea level variations relative to the centre of the Earth's mass. Local vertical land motion can be a significant contribution to the measured sea level change. Satellite altimetry was traditionally used to study the open ocean, but this technology is now being used over inland seas too. The difference of both observations can be used to estimate vertical crustal movement velocities along the sea coast. In this paper, vertical crustal movement velocities were investigated at tide gauge sites along the Adriatic Sea coast by analyzing differences between Tide Gauge (TG) and Satellite Altimetry (SA) observations. Furthermore, the estimated vertical motion rates were compared with those from nearby GNSS measurements. The study determines the practical relationships between these vertical crustal movements and those determined from unrelated data acquired from the neighbouring GNSS stations. The results show general consistence with the present geodynamics in the Adriatic Sea coastal zone.
Access status: Restricted ,
Technologia generowanie ortofotomapy z BSP na wybranym przykładzie
(Data obrony: 2021-01-22) Spyrłak, Jakub
Wydział Geodezji Górniczej i Inżynierii Środowiska
Access status: Open Access ,
Test of GNSS online service PPP kinematic solutions
(Wydawnictwa AGH, 2017) Maciuk, Kamil; Skorupa, Bogdan
GNSSs are widely used in engineering solutions that demand high accuracy. In areas requiring decimeter precision, Internet online post-processing services are a potential tool for developing GNSS observations. These services have been contributed by a number of organizations, providing users simple, unlimited, and (above all) free access. As a result, online services could be an alternative to complex and expensive commercial programs. Authors analyzed free public online GNSS services for post-processing kinematic 5-second observations in PPP mode with accuracy estimation.
Access status: Open Access ,
The potential to use smartphone‑based GNSS receivers for surveying
(Wydawnictwa AGH, 2020) Gabryszuk, Justyna
The aim of the present study was to investigate the possibility of using smart‑phone‑grade GNSS receivers for surveying purposes and to examine their accuracy in terms of positioning. The paper presents an analysis of the results of test measurements made using two smartphones: a Huawei P8 lite, powered by Android 6.0 and an iPhone 6s, operating on IOS 10.1.1. Both devices were equipped with GPS and GLONASS modules and had the supporting system, A‑GPS. Measurements were made on two test parcels of different shapes and sizes. The test procedure encompassed three measurement series (I-III), each of which consisted of five determinations. The determinations were done at 5‑min time intervals and each new measuring session began after 90 min from the previous one. Measurements with the Huawei P8 lite were taken using the Locus Map app, and measurements with the iPhone 6s were performed with the use of Map‑o‑meter. The study consisted of determining the positioning accuracy of the test smartphones by comparing the results with reference coordinates obtained from RTN measurements using the Topcon HiPer V receiver with Magnet Tools software. Determinations of the reference coordinates were done with the help of the TPI NetPro network real‑time service corrections.
Access status: Restricted ,
Wyznaczenie dokładności pomiaru punktów metodą RTK/RTN w zależności od doboru systemów GNSS
(Data obrony: 2021-01-14) Drabek, Marek; Cudzich, Marcin Andrzej
Wydział Geodezji Górniczej i Inżynierii Środowiska
Access status: Restricted ,
Wyznaczenie dokładności pomiaru punktów metodą RTK/RTN w zależności od doboru systemów GNSS
(Data obrony: 2020-01-24) Cudzich, Marcin Andrzej; Drabek, Marek
Wydział Geodezji Górniczej i Inżynierii Środowiska