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Effects of the Continuously Operating Reference Station (CORS) network on the accuracy, precision, and Time to Fix Ambiguity (TTFA) performance
Efectos de una red de Estaciones de Referencia de Operación Continua en exactitud, precisión y desempeño de la Resolución de Ambigüedades
DOI:
https://doi.org/10.15446/esrj.v26n2.89819Keywords:
ISKI CORS, CORS-TR, network, accuracy, precision. (en)ISKI CORS; CORS-TR; redes; precision; exactitud; (es)
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The geometric design of the Continuously Operating Reference Station (CORS) network is one of the most critical factors that impact accuracy, precision, and Time to Fix Ambiguity (TTFA) performance. In this study, the authors investigate the subject of geometric design by using both local ISKI CORS and national CORS-Turkey (CORS-TR) networks, and they redesign the ISKI CORS network by increasing interstation distances. For three systems, real-time Virtual Reference Station (VRS) solutions have been obtained and tested with Analysis of Variance (ANOVA). As a result, the 8-station ISKI CORS provides the most accurate results in the vertical component. In contrast, for TTFA performance, the CORS-TR network shows worse outcomes than the others. Due to the increase in the interstation distances, the increase in the base length caused worse results in FIX solution ratios for redesigned ISKI CORS. In summary, the authors have stated that the 8-station ISKI CORS network performs better, especially regarding vertical accuracy. Furthermore, the authors state that the TTFA performance and FIX solution ratios are high, and the ISKI CORS geometric design is optimal.
El diseño geométrico de una red de Estaciones de Referencia de Operación Continua (CORS, del inglés Continuously Operating Reference Station) es uno de los fáctores más críticos que impactan la exactitud, precisión y desempeño de la Resolución de Ambigüedades (TTFA, del inglés Time to Fix Ambiguity). En este estudio los autores investigan el diseño geométrico de la red local ISKI CORS y la nacional CORS-Turkey (CORS-TR) y rediseñan la red ISKI CORS al incrementar las distancias entre estaciones. En los tres factores se obtuvieron las soluciones en tiempo real de las Estaciones de Referencia Virtual (VRS, Virtual Reference Station) y se evaluaron con el Análisis de la Varianza (ANOVA). Como resultado en el componente vertical, la red ISKI CORS de ocho estaciones registra los resultados más exactos. En contraste, para el desempeño TTFA la red CORS-TR muestra los peores resultados frente a los otros factores evaluados. Debido al incremento de las distancias entre estaciones, el incremento en la longitud de base generó los peores resultados en los radios de resolución para la red rediseñada ISKI CORS. En resumen, los autores han establecido que la red ISKI CORS de ocho estaciones presenta el mejor desempeño, especialmente en términos de precisión vertical. Además, los autores definieron que el desempeño TTFA y los radios de resolución son altos, y que el diseño geométrico ISKI CORS es el óptimo.
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