Comparisons of geoid models over Alaska computed with different Stokes' kernel modifications
نویسندگان
چکیده
منابع مشابه
Comparisons of geoid models over Alaska computed with different Stokes' kernel modifications
Various Stokes kernel modification methods have been developed over the years. The goal of this paper is to test the most commonly used Stokes kernel modifications numerically by using Alaska as a test area and EGM08 as a reference model. The tests show that some methods are more sensitive than others to the integration cap sizes. For instance, using the methods of Vaníček and Kleusberg or Feat...
متن کاملComments to X. Li and Y. M. Wang (2011) Comparisons of geoid models over Alaska computed with different Stokes' kernel modifications, JGS 1(2): 136−142 Communication
Li andWang recently comparedgeoiddeterminationbyvariousgravimetricmethods formodifyingStokes' formula vs. usingGPS/levelling geoid heights as a reference model. Possible large systematic errors in the differences of gravimetric and GPS/levelling geoid models deteriorate the results and conclusions. Moreover, spectral combination, the only stochastic method in the study, was applied in an unreal...
متن کاملReply to Comments to X. Li and Y. M. Wang (2011) Comparisons of geoid models over Alaska computed with different Stokes' kernel
The authors thank professor Sjöberg for having interest in our paper. The main goal of the paper is to test kernel modification methods used in geoid computations. Our tests found that Vanicek/Kleusberg's and Featherstone's methods fit the GPS/leveling data the best in the relative sense at various cap sizes. At the same time, we also pointed out that their methods are unstable and the mean val...
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Three GOCE-based gravity field solutions have been computed by ESA’s high-level processing facility and were released to the user community. All models are accompanied by variance-covariance information resulting either from the least squares procedure or a Monte-Carlo approach. In order to obtain independent external quality parameters and to assess the current performance of these models, a s...
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Geoid modelling for India is a complex, exhaustive and continuous task because of its large area and tremendous varieties of surface. This paper reviews available geoid models for Indian Territory developed through geometric, gravimetric and hybrid methods for Northern, Eastern, Southern, and Western regions and presents a summary of further scope for the geoid development in India.
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ژورنال
عنوان ژورنال: Journal of Geodetic Science
سال: 2011
ISSN: 2081-9943,2081-9919
DOI: 10.2478/v10156-010-0016-1