A Modelling Study by Factorial Design on GNSS Positioning/Estudio de modelado por diseno factorial en posicionamiento de Sistemas Globales de Navegacion Satelital

• Published in: Earth sciences research journal 2021-12, Vol.25 (4), p.391
• Main Authors: Ilci, Veli, Sisman, Yasemin
• Format: Article
• Language: English
• Subjects: Analysis; Artificial satellites; Book publishing
• ISSN: 1794-6190
• DOI: 10.15446/esrj.v25n4.95060

Although researchers have widely studied the analysis and modeling of error sources on Global Navigation Satellite Systems positioning, some of these errors have not been eliminated significantly. Only some of the Global Navigation Satellite System's data are modeled. The present work was undertaken to determine the effect of different variables: season, the number of visible satellites, and dilution of precision on the efficiency of horizontal and vertical CORS (Continuously Operating Reference Stations) positioning. The CORS data was collected at 14 different test points during 600 epochs with 1-second intervals for this aim. Factorial designs supply an efficient solution to understand the impact of several factors on a response variable. A full factorial design with three factors at two levels was applied for these purposes. The main and the interaction effects of factors were analyzed on the CORS horizontal and vertical positioning. According to the full factorial design results, while all main and interaction effects of factors significantly affected the CORS horizontal positioning error, some elements did not affect the CORS vertical positioning error. Also, the regression equations were obtained for all situations to investigate the other level of selected factors in the response variables. Keywords: factorial design; regression analysis; GNSS error sources; CORS; GNSS A pesar de que los investigadores han analizado y modelado ampliamente las fuentes de error de posicionamiento en los Sistemas Globales de Navegacion Satelital (GNSS, Global Navigation Satellite System), algunos de estos errores no se han eliminado significativamente. Y solo parte de esta informacion de los Sistemas Satelitales de Navegacion Global ha sido modelada. Este trabajo se realiza con el fin de determinar los efectos de diferentes variables: temporada, numero de satelites visibles, e imprecision en la eficiencia de posicionamiento horizontal y vertical CORS (estaciones de referenda en funcionamiento continuo). La informacion CORS se recolecto en 14 escenarios de prueba durante 600 periodos y con intervalos de un segundo para este objetivo. Los disefios factoriales proveen una solucion eficiente para entender el impacto de varios factores ante una respuesta variable. En este trabajo se aplico un diseno factorial completo con tres factores en dos niveles. Los efectos principales y de interaccion de factores se analizaron con el posicionamiento CORS horizontal y vertical. De acu