Journal of Geodesy
Công bố khoa học tiêu biểu
* Dữ liệu chỉ mang tính chất tham khảo
Sắp xếp:
SHORT NOTE: Extending simplified high-degree synthesis methods to second latitudinal derivatives of geopotential
Journal of Geodesy - Tập 76 - Trang 447-450 - 2002
Simplified techniques for high-degree spherical harmonic synthesis are extended to include gravitational potential second derivatives with respect to latitude.
ITG-CHAMP01: a CHAMP gravity field model from short kinematic arcs over a one-year observation period
Journal of Geodesy - Tập 78 - Trang 462-480 - 2005
Global gravity field models have been determined based on kinematic orbits covering an observation period of one year beginning from March 2002. Three different models have been derived up to a maximum degree of n=90 of a spherical harmonic expansion of the gravitational potential. One version, ITG-CHAMP01E, has been regularized beginning from degree n=40 upwards, based on the potential coefficien...... hiện toàn bộ
Applying differential InSAR to orbital dynamics: a new approach for estimating ERS trajectories
Journal of Geodesy - Tập 77 - Trang 493-502 - 2003
A new approach for tuning the trajectories of the European remote sensing (ERS) satellites is developed and assessed. Differential dual-pass interferometry is applied to calculate interferograms from the phase difference of synthetic aperture radar (SAR) images acquired by the ERS satellites over the site of the 1992 earthquake in Landers, California. These interferograms contain information about...... hiện toàn bộ
GPS signal diffraction modelling: the stochastic SIGMA-δ model
Journal of Geodesy - Tập 73 - Trang 259-267 - 1999
The SIGMA-Δ model has been developed for stochastic modelling of global positioning system (GPS) signal diffraction errors in high precision GPS surveys. The basic information used in the SIGMA-Δ model is the measured carrier-to-noise power-density ratio (C/N0). Using the C/N0 data and a template technique, the proper variances are derived for all phase observations. Thus the quality of the measu...... hiện toàn bộ
Integrity investigation of global ionospheric TEC maps for high-precision positioning
Journal of Geodesy - Tập 95 - Trang 1-15 - 2021
Aside from the ionospheric total electron content (TEC) information, root-mean-square (RMS) maps are also provided as the standard deviations of the corresponding TEC errors in global ionospheric maps (GIMs). As the RMS maps are commonly used as the accuracy indicator of GIMs to optimize the stochastic model of precise point positioning algorithms, it is of crucial importance to investigate the re...... hiện toàn bộ
Reply to the comments by R. N. Celik and H. S. Kutoglu on Kavzoglu and Saka (2005) “Modelling local GPS/levelling geoid undulations using artificial neural networks” J Geod 78(9):520–527
Journal of Geodesy - Tập 82 - Trang 179-180 - 2007
Convergence and optimal truncation of binomial expansions used in isostatic compensations and terrain corrections
Journal of Geodesy - Tập 74 Số 9 - Trang 627-636 - 2001
Nonlinear diffusion filtering of data on the Earth’s surface
Journal of Geodesy - Tập 87 - Trang 143-160 - 2012
The paper deals with data filtering on closed surfaces using linear and nonlinear diffusion equations. We define a surface finite-volume method to approximate numerically parabolic partial differential equations on closed surfaces, namely on a sphere, ellipsoid or the Earth’s surface. The closed surface as a computational domain is approximated by a polyhedral surface created by planar triangles a...... hiện toàn bộ
Tổng số: 2,494
- 1
- 2
- 3
- 4
- 5
- 6
- 10