Results 41 to 50 of about 42,160 (181)

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

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

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

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

Are PPP tests erratically behaved? Some panel evidence [PDF]

, 2006
This paper examines whether, in addition to standard unit root and cointegration tests, panel approaches also produce test statistics behaving erratically when applied to PPP.
Hanck, C, Hanck, Christoph, Caporale, GM, Caporale, Guglielmo Maria   +3 more
core   +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

(Usability of Generating long term GNSS time series using CSRS-PPP and site velocity estimation) [PDF]

, 2016
Son yıllarda PPP (Precise Point Positioning) yöntemiyle konum belirleme doğruluğunun artması yönteme olan ilginin artmasına ve yöntemin daha yaygın kullanılır hale gelmesine neden olmuştur.
Alçay, Salih, Yiğit, Cemal Özer, Özdemir, Behlül Numan, Ceylan, Ayhan   +3 more
core   +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

A Determination of the motion based on GNSS observations between 2000 and 2021 by using the IGS points on the Polar Regions

Geodesy and Cartography, 2022
People are fascinated today more than ever by the polar regions of the Earth. One reason for this is that wide expanses of the Arctic and Antarctic have not been explored and are therefore still viewed as frontier regions. Another is that they both have
Atınç Pırtı
doaj   +1 more source