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Title: THE INFLUENCE OF A GEOMETRIC FACTOR ON A SATELLITE POSITIONING ACCURACY
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THE INFLUENCE OF A GEOMETRIC FACTOR ON A SATELLITE POSITIONING ACCURACY
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1314-2704
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English
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18
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2.2
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The influence of the geometry of the spatial resection - mutual positioning in the space of the receiver and satellites, signals from which the receiver is received at the time of measurement, on the positioning accuracy is considered. The position of the satellite is described through the geometric range, the direction angle and the elevation angle in a rectangular spatial coordinate system. The geometric factor is expressed through the diagonal elements of the inverse weight matrix of the position error determined point. The change in the geometric factor for symmetrical satellite layouts is investigated - with uniform location along the horizon and on the hemisphere. It is shown that as the elevation angle increases, the accuracy of determining elevation marks increases (VDOP decreases), and vice versa, the accuracy of determining the planned coordinates de-creases (HDOP grows). In this regard, it is suggested that when planning survey at observation stations and geopoligons, it is not to focus on PDOP, but separately on VDOP and HDOP.
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conference
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18th International Multidisciplinary Scientific GeoConference SGEM 2018
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18th International Multidisciplinary Scientific GeoConference SGEM 2018, 02-08 July, 2018
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Proceedings Paper
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STEF92 Technology
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International Multidisciplinary Scientific GeoConference-SGEM
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Bulgarian Acad Sci; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci & Arts; Slovak Acad Sci; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; World Acad Sci; European Acad Sci, Arts & Letters; Ac
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1035-1042
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02-08 July, 2018
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website
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cdrom
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732
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geometric factor; inverse weight matrix; symmetrical arrangement of satellites; position error of points.
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