Journal of Geodesy
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Transformation model selection by multiple hypotheses testing
Journal of Geodesy - Tập 88 - Trang 1117-1130 - 2014
Transformations between different geodetic reference frames are often performed such that first the transformation parameters are determined from control points. If in the first place we do not know which of the numerous transformation models is appropriate then we can set up a multiple hypotheses test. The paper extends the common method of testing transformation parameters for significance, to t......
On the GPS widelane and its decorrelating property
Journal of Geodesy - Tập 71 - Trang 577-587 - 1997
In this contribution we consider the popular widelaning technique from the viewpoint of ambiguity decorrelation. It enables us to cast the technique into the framework of the least-squares ambiguity decorrelation adjustment (LAMBDA) and to analyse its relative merits. In doing so, we will provide answers to the following three questions. Does the widelane decorrelate? Does it explicitly appear in......
The affine constrained GNSS attitude model and its multivariate integer least-squares solution
Journal of Geodesy - - 2012
Galileo and QZSS precise orbit and clock determination using new satellite metadata
Journal of Geodesy - Tập 93 - Trang 1123-1136 - 2019
During 2016–2018, satellite metadata/information including antenna parameters, attitude laws and physical characteristics such as mass, dimensions and optical properties were released for Galileo and QZSS (except for the QZS-1 optical coefficients). These metadata are critical for improving the accuracy of precise orbit and clock determination. In this contribution, we evaluate the benefits of the......
Effects of non-tidal loading applied in VLBI-only terrestrial reference framesAbstract We investigate the impact of the reduction of non-tidal loading (NTL) in the computation of secular terrestrial reference frames (TRFs) from Very Long Baseline Interferometry (VLBI) observations. There are no conventional models for NTL in the geodetic community yet, but the Global Geophysical Fluid Center prepared a set of corresponding site displacements ... ...
Journal of Geodesy - - 2023
Orbit determination of the SELENE satellites using multi-satellite data types and evaluation of SELENE gravity field models
Journal of Geodesy - Tập 85 - Trang 487-504 - 2011
The SELENE mission, consisting of three separate satellites that use different terrestrial-based tracking systems, presents a unique opportunity to evaluate the contribution of these tracking systems to orbit determination precision. The tracking data consist of four-way Doppler between the main orbiter and one of the two sub-satellites while the former is over the far side, and of same-beam diffe......
Geodetic accuracy of the Macrometer model V-1000
Journal of Geodesy - Tập 58 - Trang 211-221 - 1984
The Macrometer Model V-1000 is a geodetic positioning instrument that uses the radio signals broadcast by the GPS satellites. The Macrometer is the only GPS user equipment commercially available that does not require any of the GPS codes. The Model V-1000 receives only the 19-cm wavelength signals from GPS although similar instruments, built for the U.S. Air Force Geophysics Laboratory, receive bo......
A systematic investigation of optimal carrier-phase combinations for modernized triple-frequency GPS
Journal of Geodesy - Tập 82 Số 9 - Trang 555-564 - 2008
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