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Relevant bibliographies by topics / Helmert's condensation

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Academic literature on the topic 'Helmert's condensation'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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Journal articles on the topic "Helmert's condensation"

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Wang, Y. "Precise computation of the direct and indirect topographic effects of Helmert's 2nd method of condensation using SRTM30 digital elevation model." Journal of Geodetic Science 1, no. 4 (2011): 305–12. http://dx.doi.org/10.2478/v10156-011-0009-8.

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Precise computation of the direct and indirect topographic effects of Helmert's 2nd method of condensation using SRTM30 digital elevation modelThe direct topographic effect (DTE) and indirect topographic effect (ITE) of Helmert's 2nd method of condensation are computed using the digital elevation model (DEM) SRTM30 in 30 arc-seconds globally. The computations assume a constant density of the topographic masses. Closed formulas are used in the inner zone of half degree, and Nagy's formulas are used in the innermost column to treat the singularity of integrals. To speed up the computations, 1-di

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Marotta, Giuliano Sant’Anna, and Roberta Mary Vidotti. "DEVELOPMENT OF A LOCAL GEOID MODEL AT THE FEDERAL DISTRICT, BRAZIL, PATCH BY THE REMOVE-COMPUTE-RESTORE TECHNIQUE, FOLLOWING HELMERT'S CONDENSATION METHOD." Boletim de Ciências Geodésicas 23, no. 3 (2017): 520–38. http://dx.doi.org/10.1590/s1982-21702017000300035.

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Abstract: There are several techniques for determining geoid heights using ground gravity data, the geopotential models, the astro-geodetic components or a combination of them. Among the techniques used, the Remove-Compute-Restore (RCR) technique has been widely applied for the accurate determination of the geoid heights. This technique takes into account short, medium and long wavelength components derived from the elevation data obtained from Digital Terrain Models (DTM), ground gravity data and global geopotential models, respectively. This technique can be applied after adopting the proced

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Marques, Éder Teixeira, William Rodrigo Dal Poz, and Gabriel Do Nascimento Guimarães. "GEOID MODELLING USING INTEGRATION AND FFT ASSOCIATED WITH DIFFERENT GRAVIMETRIC REDUCTION METHODS." Revista Brasileira de Geofísica 36, no. 1 (2018): 81. http://dx.doi.org/10.22564/rbgf.v36i1.909.

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ABSTRACT. A vertical reference system is characterized by a vertical datum and a set of scientific altitudes. In the case of orthometric altitudes, the geoid is used as a reference surface, equipotential surface of the gravity field of the Earth that better fits, in the sense of the Least Square Method, to the mean sea level. This study aimed to determine the geoid by applying two processes for calculation of residual ondulation, the integration and the Fast Fourier Transform. These techniques were applied to the values of the residual anomalies obtained from different methods of gravimetric r

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Novák, P. "Gravity reduction using a general method of Helmert’s condensation." Acta Geodaetica et Geophysica Hungarica 42, no. 1 (2007): 83–105. http://dx.doi.org/10.1556/ageod.42.2007.1.5.

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Heck, B. "On Helmert?s methods of condensation." Journal of Geodesy 77, no. 3-4 (2003): 155–70. http://dx.doi.org/10.1007/s00190-003-0318-5.

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Tscherning, C. C. "Comments and reply regarding Heck (2003) ?On Helmert?s methods of condensation?" Journal of Geodesy 78, no. 7-8 (2005): 457–61. http://dx.doi.org/10.1007/s00190-004-0412-3.

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Jekeli, Christopher, Hyo Jin Yang, and Kevin Ahlgren. "Using isostatic gravity anomalies from spherical harmonic models and elastic plate compensation to interpret the lithosphere of the Bolivian Andes." GEOPHYSICS 78, no. 3 (2013): G41—G53. http://dx.doi.org/10.1190/geo2012-0378.1.

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We have determined for the Bolivian Andes that the new global gravity models derived from the Gravity field and steady-state Ocean Circulation Explorer (GOCE) satellite mission may be used directly to study lithospheric structure. Toward this end, we have formulated Bouguer and isostatic gravity anomalies in spherical approximation, rather than in the usual planar approach, using spherical harmonic series consistent with the satellite-derived gravitational models. From the approximate equivalency of topographic masses and surface density layers using the Helmert condensation method we further

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Wu, Qiong, Hongyao Wang, Bin Wang, Shengbo Chen, and Hongqing Li. "Performance Comparison of Geoid Refinement between XGM2016 and EGM2008 Based on the KTH and RCR Methods: Jilin Province, China." Remote Sensing 12, no. 2 (2020): 324. http://dx.doi.org/10.3390/rs12020324.

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The selection of an appropriate global gravity field model and refinement method can effectively improve the accuracy of the refined regional geoid model in a certain research area. We analyzed the accuracy of Experimental Geopotential Model (XGM2016) based on the GPS-leveling data and the modification parameters of the global mean square errors in the KTH geoid refinement in Jilin Province, China. The regional geoid was refined based on Earth Gravitational Model (EGM2008) and XGM2016 using both the Helmert condensation method with an RCR procedure and the KTH method. A comparison of the origi

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Dissertations / Theses on the topic "Helmert's condensation"

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Serpas, Juan Gilberto. "Local and regional geoid determination from vector airborne gravimetry." The Ohio State University, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=osu1066757143.

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Book chapters on the topic "Helmert's condensation"

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Sjöberg, Lars E. "On the Topographic Effects of Helmert’s Method of Condensation." In International Association of Geodesy Symposia. Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-642-56677-6_8.

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Heck, B. "On the Use and Abuse of Helmert’s Second Method of Condensation." In International Association of Geodesy Symposia. Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/978-3-662-04709-5_24.

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Heck, Bernhard. "A Revision of Helmert’s Second Method of Condensation in Geoid and Quasigeoid Determination." In Geodesy and Physics of the Earth. Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-78149-0_58.

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Conference papers on the topic "Helmert's condensation"

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Grekulovic, Sanja. "INDIRECT EFFECT OF THE HELMERT CONDENSATION REDUCTION OVER THE TERRITORY OF SERBIA." In 17th International Multidisciplinary Scientific GeoConference SGEM2017. Stef92 Technology, 2017. http://dx.doi.org/10.5593/sgem2017/22/s09.044.

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