Results 31 to 40 of about 62,201 (166)
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
Statistical Comparison on Accuracies of Web-Based Online PPP Services
, 2022 The precise point positioning technique (PPP), an absolute positioning method, is widely used in geodetic point positioning. This study investigates the accuracy of the technique through statistical comparisons of the root mean square errors (RMSE ...
Bülbül, Sercan +5 more
core +1 more source
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 +3 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, Caporale, GM
core +4 more sources
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 +1 more
doaj +1 more source
Gaea - Journal of Geoscience, 2009 O metodo de Posicionamento por Ponto Preciso (PPP) com a utilizacao de GPS ( Global Positioning System ) vem se popularizando nos ultimos anos, principalmente, com o surgimento de servicos gratuitos e de processamento on-line , tais como, o Natural Resource Canada (NRCan), denominado Canadian Spatial Reference System – Precise Point Positioning ...
Marcelo Matsuoka +3 more
openaire +1 more source
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 +3 more
doaj +1 more source
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
Does Climate Risk Affect Employment Decisions? International Evidence
Business Strategy and the Environment, EarlyView.ABSTRACT This study investigates the effect of climate risk on corporate employment decisions. Using a large sample from 41 countries, we find a positive association between climate risk and underinvestment in labor, notably manifesting as excessive employee layoffs.
Claude Francoeur +3 more
wiley +1 more source