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Технологии
О влиянии геометрии спутниковых наблюдений на погрешности определения координат пунктов опорной геодезической сети
Точность определений пространственных координат спутниковым методом зависит от геометрии расположения спутников на небосводе относительно спутникового приемника в момент наблюдений. Наименьшие погрешности достигаются, если спутники расположены относительно
пункта измерений ортогонально по направлению на восток, на запад, на юг, в зенит и на север. Для обеспечения максимальной точности измерений оператор кроме обычных действий должен фиксировать значения геометрических факторов VDOP, HDOP и TDOP, которые используются
в постобработке.
On the Influence of the Satellite Observation Geometry On the Errors In Determining Coordinates of the Geodetic Control Network Stations
G.A. Shanurov (MIIGAiK)
V.Z. Ostroumov (State Oceanographic Institute)
L.V. Ostroumov (State Oceanographic Institute)
#2, p 57
Positioning accuracy in geodetic observations static mode depends on the observations geometry. It means that positioning error depends on system stellites positions on celestial sphere relative to ground based satellite receivers. The least positioning error takes place if directions towards the satellites from the ground based points are orthogonal and pointed locally to the east, to the west, to the south, to the zenith and to the north, if possible. The satellite receiver operator is obliged to record regularly HDOP, VDOP and TDOP values (factors). The results postprocessing is to be made by iterrations.
On the Influence of the Satellite Observation Geometry On the Errors In Determining Coordinates of the Geodetic Control Network Stations
G.A. Shanurov (MIIGAiK)
V.Z. Ostroumov (State Oceanographic Institute)
L.V. Ostroumov (State Oceanographic Institute)
#2, p 57
Positioning accuracy in geodetic observations static mode depends on the observations geometry. It means that positioning error depends on system stellites positions on celestial sphere relative to ground based satellite receivers. The least positioning error takes place if directions towards the satellites from the ground based points are orthogonal and pointed locally to the east, to the west, to the south, to the zenith and to the north, if possible. The satellite receiver operator is obliged to record regularly HDOP, VDOP and TDOP values (factors). The results postprocessing is to be made by iterrations.
57-60.pdf