Resumo

ORTIZ-MARIN, Rafael; DEL RIO-CIDONCHA, María Gloria; MARTINEZ-PALACIOS, Juan  e  COBOS-GUTIERREZ, Carlos. A method to optimize topographic measurements using gps devices. INCI [online]. 2007, vol.32, n.9, pp.586-592. ISSN 0378-1844.

Until today, to know the coordinates of a place one could measure several times and after that calculate the average in order to obtain the more probable value. Another option was doing only one measure and suppose that was the coordinate of that place. These were the techniques always used. First case, had a cloud of points but it didn’t know which measurements were nearest to the place were the GPS antenna was situated. Now applying a method based on geostatistic techniques, concretely the cokriging one, it can extract a subgroup of that cloud of points, whose average improves the exactitude of the average that it can obtain with the group of all of them. This methodology is developed in this paper.

Palavras-chave : Autocorrelación Espacial ; Cokrigeado ; GPS ; Semivariograma ; Variables Regionalizadas.