Journal of Geodesy
Công bố khoa học tiêu biểu
* Dữ liệu chỉ mang tính chất tham khảo
Sắp xếp:
Sequential estimation of surface water mass changes from daily satellite gravimetry data
Journal of Geodesy - Tập 89 - Trang 259-282 - 2014
We propose a recursive Kalman filtering approach to map regional spatio-temporal variations of terrestrial water mass over large continental areas, such as South America. Instead of correcting hydrology model outputs by the GRACE observations using a Kalman filter estimation strategy, regional 2-by-2 degree water mass solutions are constructed by integration of daily potential differences deduced ......
Accuracy assessment of the GPS-based slant total electron content
Journal of Geodesy - Tập 83 - Trang 773-785 - 2009
The main scope of this research is to assess the ultimate accuracy that can be achieved for the slant total electron content (sTEC) estimated from dual-frequency global positioning system (GPS) observations which depends, primarily, on the calibration of the inter-frequency biases (IFB). Two different calibration approaches are analyzed: the so-called satellite-by-satellite one, which involves lev......
Atmospheric range correction for two-frequency SLR measurements
Journal of Geodesy - Tập 85 - Trang 623-635 - 2011
It has been widely known that the use of two-frequency Satellite Laser Ranging (SLR) system is limited by stringent precision requirements of the range measurements and the proper atmospheric model. Owing to the stringent requirements, this SLR system is impractical for the current requirement of SLR measurements within the framework of global geodetic observing system (GGOS). If in the future thi......
On the initialization of the sensitivity matrix in variational equations
Journal of Geodesy - Tập 97 - Trang 1-10 - 2023
We address a claim frequently raised by one author that determination of Earth’s gravity field by satellite observations using traditional methods is mathematically flawed. Specifically, attention is drawn to the practice of setting to zero the initial sensitivity matrix in the variational equations for force model parameters. It is asserted that this would lead to mathematical contradictions. In ......
Satellite laser ranging to GPS and GLONASS
Journal of Geodesy - Tập 89 - Trang 725-743 - 2015
Satellite laser ranging (SLR) to the satellites of the global navigation satellite systems (GNSS) provides substantial and valuable information about the accuracy and quality of GNSS orbits and allows for the SLR-GNSS co-location in space. In the framework of the NAVSTAR-SLR experiment two GPS satellites of Block-IIA were equipped with laser retroreflector arrays (LRAs), whereas all satellites of ......
Calculation of strongly singular and hypersingular surface integrals
Journal of Geodesy - Tập 72 - Trang 530-546 - 1998
Efficient numerical computation of integrals defined on closed surfaces in ℝ3 with non-integrable point singularities that arise in physical geodesy is discussed. The method is based on the use of polar coordinates and the definition of integrals with non-integrable point singularities as Hadamard finite part integrals. First the behavior of singular integrals under smooth parameter transformatio......
Tổng số: 2,494
- 1
- 2
- 3
- 4
- 5
- 6
- 10