Krzysztof Sośnica

TL;DR: A new extended ECOM is presented which substantially reduces the spurious signals in the geocenter coordinate $$z$$z, reduces the orbit misclosures at the day boundaries by about 10 %, slightly improves the consistency of the estimated ERPs with those of the IERS 08 C04 Earth rotation series, and significantly reduces the systematics in the SLR validation of the GNSS orbits.

TL;DR: A comprehensive evaluation of the availability and the quality of multi-GNSS real-time orbit and clock products is provided through the comparison to the final Center for Orbit Determination in Europe (CODE) orbits, fitting long continuous orbital arcs, as well as the assessment of clock stability using modified Allan deviation diagrams.

TL;DR: In this article, the authors study the effect of the satellite signature effect on the mean residual of a single-photon SLR station in the context of the GPS-GLONASS co-location.

TL;DR: In this article, a parameter estimation approach is presented to investigate systematic orbit errors and it is shown that SLR validation of LEO satellites is not only able to detect radial but also along-track and cross-track offsets.

TL;DR: In this paper, satellite laser ranging (SLR) observations to geodetic satellites have provided valuable information of the low-degree coefficients of the Earth's gravity field, i.e., the relationship between mass variations in the atmosphere, oceans, land hydrology, and ice sheets.