Estimating Canadian vertical datum offsets using GNSS/levelling benchmark information and GOCE global geopotential models
نویسندگان
چکیده
منابع مشابه
An evaluation of recent GOCE geopotential models in Brazil
Several global geopotential models based on Gravity eld and steady-state Ocean Circulation Explorer (GOCE) data have been published in the last two years. Some of these models use combinations of different satellite missions, while others use only GOCE data. This paper presents the evaluation and analysis of each approach using GOCE data in the Southeast of Brazil. Two assessments have beenmade...
متن کاملApproximations of the GOCE error variance-covariance matrix for least-squares estimation of height datum offsets
One main geodetic objective of the European Space Agency’s satellite mission GOCE (gravity eld and steady-state ocean circulation explorer) is the contribution to global height system uni cation. This can be achieved by applying the Geodetic Boundary Value Problem (GBVP) approach. Thereby one estimates the unknown datum offsets between different height networks (datum zones) by comparing the ph...
متن کاملOn the Definition and Realization of a Global Vertical Datum
AGlobal Vertical Datum (GVD) is naturally defined by the geoid, and there is a well-established consensus to adopt Gauss-Bessel-Listing's definition of the geoid (i.e. as being the level surface of the Earth's gravity field that best fits the undisturbed sea level). Themain problem in defining the geoid is therefore to fix its constant geopotential (W0). Nevertheless, this definition can be int...
متن کاملGeoid-to-Quasigeoid Separation Computed Using the GRACE/GOCE Global Geopotential Model GOCO02S - A Case Study of Himalayas and Tibet
The geoid-to-quasigeoid correction has been traditionally computed approximately as a function of the planar Bouguer gravity anomaly and the topographic height. Recent numerical studies based on newly developed theoretical models, however, indicate that the computation of this correction using the approximate formula yields large errors especially in mountainous regions with computation points ...
متن کاملEstimating Cross-Industry Cross-Country Models Using Benchmark Industry Characteristics
Estimating Cross-Industry Cross-Country Models Using Benchmark Industry Characteristics* International industry data permits testing whether the industry-specific impact of cross-country differences in institutions or policies is consistent with economic theory. Empirical implementation requires specifying the industry characteristics that determine impact strength. Most of the literature has b...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Geodetic Science
سال: 2012
ISSN: 2081-9943
DOI: 10.2478/v10156-012-0008-4