QUASIGEOID FITTING TO THE GNSS/LEVELLING BENCHMARKS IN IASI CITY AREA

被引：0

作者：

Chirila, Constantin ^{[1
]}

Oniga, Ersilia Valeria ^{[1
]}

Dumitru, Paul Daniel ^{[2
]}

机构：

[1] Gheorghe Asachi Tech Univ Iasi, Iasi, Romania

[2] Bucharest Tech Univ Civil Engn, Bucharest, Romania

来源：

GEOCONFERENCE ON INFORMATICS, GEOINFORMATICS AND REMOTE SENSING, VOL II | 2014年

关键词：

quasigeoid; interpolation; height; accuracy; transformation;

D O I：

暂无

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Adoption in Romania of the ETRS89 European datum implies the need for a coordinate transformation model relative to local datum, which has the characteristics of uniqueness, simplicity and accuracy. When the application relates to the 3D integration of the spatial data, the main problem consists in the introduction of precise gravity related heights in the local system. This can be resolved by correcting the quasigeoid surface resulting from a regional gravimetric model, in relation to data from GNSS and levelling measurements. The case study uses the corrections provided by the EGG97 European quasigeoid model with applications in Iasi city area, Romania. A comparative study will be performed using only interpolation or combined analytical and interpolation methods in order to obtain a precise local quasigeoid model.

引用

页码：411 / 417

页数：7

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