Results 31 to 40 of about 59,574 (168)

Análise Comparativa da Acurácia Posicional Proporcionada por Plataformas de Processamento de Dados GPS no Posicionamento Relativo e por Ponto Preciso

Revista Brasileira de Cartografia, 2022
Vários serviços de processamento de dados GPS (Global Positioning System) estão disponíveis em plataformas on-line para determinação posicional com uso dos métodos relativo e por ponto preciso (PPP).
Raissa Cruz Ferreira, Alessandro Salles Carvalho, Victor Jose Cioce, Edvaldo Simões da Fonseca Junior   +3 more
doaj  

Evaluation of the Performance of Online GPS/GNSS Data Processing Services for Monitoring the Land Deformations and Movements

Journal of Engineering, 2019
In recent years, the Global Navigation Satellite Services (GNSS) technology has been frequently employed for monitoring the Earth crust deformation and movement.
Sajad Kareem Wanas, Oday Yaseen Mohamed Zeki Alhamadani   +1 more
doaj   +1 more source

Evaluation and Analysis of the Accuracy of Open-Source Software and Online Services for PPP Processing in Static Mode

Remote Sensing, 2023
It has been proven that precise point positioning (PPP) is a well-established technique to obtain high-precision positioning in the order between centimeters and millimeters.
Jesus René Vázquez-Ontiveros, Jorge Padilla-Velazco, J. Ramon Gaxiola-Camacho, Guadalupe Esteban Vázquez-Becerra   +3 more
doaj   +1 more source

Precision evaluation for different GNSS RINEX 3 using online services and open-source software PPP-MANS

Geodesy and Cartography, 2023
It is critical to evaluate the reliability of using free online processing software for Global Navigation Satellite System post-processing since the advancement of GNSS gives satellite navigation customers all over the world great benefits. AUSPOS, IBGE,
Ashraf G. Shehata, Fawzi H. Zarzoura, Mahmoud El-Mewafi   +2 more
doaj   +1 more source

Web tabanlı CSRS-PPP uygulamasının farklı uydu sistemleri üzerindeki performansı

Journal of Geodesy and Geoinformation, 2020
Küresel Navigasyon Uydu Sistemleri’nden (Global Navigation Satellite Systems, GNSS) elde edilen veriler değerlendirilirken bilimsel/akademik, ticari yazılımlar ve kullanımı gittikçe artan web tabanlı uygulamalar kullanılmaktadır. GNSS veri değerlendirme stratejisi mutlak ve bağıl olarak temelde ikiye ayrılmaktadır. Kullanımı artan web tabanlı servisler
openaire   +5 more sources

Testing PPP for the South African Rand/US Dollar exchange rate at different frequencies [PDF]

, 2010
This paper tests the PPP hypothesis for the South African rand/ US dollar real exchange rate using a fractional integration framework. The results suggest that the real exchange rate of the South African rand with respect to the US dollar is a highly ...
Caporale, GM, Gil-Alana, LA
core   +6 more sources

Impact of different sampling rates on precise point positioning performance using online processing service

Geo-spatial Information Science, 2021
In this study, the effect of different sampling rates (i.e. observation recording interval) on the Precise Point Positioning (PPP) solutions in terms of accuracy was investigated.
Serdar Erol, Reha Metin Alkan, İ. Murat Ozulu, Veli Ilçi   +3 more
doaj   +1 more source

Usando la red de estaciones SIRGAS de Costa Rica para la cuantificación de las discrepancias respecto de un procesamiento PPP en línea

Ingeniería, 2017
Se cuantificaron las discrepancias en las coordenadas geocéntricas [X,Y,Z] obtenidas entre soluciones GPS procesadas en línea con el software del Canadian Space Reference System (CSRS) bajo la modalidad de Posicionamiento Puntal Preciso (PPP) y las ...
Jorge Moya Zamora
doaj   +1 more source

Effect of using different satellite ephemerides on GPS PPP and post processing techniques

Geodesy and Cartography, 2021
The orbital error is one of the errors in GPS which affect the accuracy of GPS positioning. In this research GPS broadcast, ultra-rapid, rapid and precise satellite ephemerides are used for processing different baseline lengths among some CORS stations ...
Khaled Mahmoud Abdel Aziz, Loutfia Elsonbaty   +1 more
doaj   +1 more source

Airborne Validation of ICESat-2 ATLAS Data over Crevassed Surfaces and Other Complex Glacial Environments: Results from Experiments of Laser Altimeter and Kinematic GPS Data Collection from a Helicopter over a Surging Arctic Glacier (Negribreen, Svalbard)

Remote Sensing, 2022
The topic of this paper is the airborne evaluation of ICESat-2 Advanced Topographic Laser Altimeter System (ATLAS) measurement capabilities and surface-height-determination over crevassed glacial terrain, with a focus on the geodetical accuracy of ...
Ute C. Herzfeld, Matthew Lawson, Thomas Trantow, Thomas Nylen   +3 more
doaj   +1 more source