Accuracy Assessment of SGP4 Orbit Information Conversion into Osculating Elements [PDF]
, 2013 The SGP4 model is one of the analytical orbit models applied for the orbit prediction using TLE orbit information. For the orbit accuracy improvement, a model conversion was performed to apply a more precise model. Assuming that a TLE data set is the
Aida, Saika, Kirschner, Michael
core
Research on the impact factors of GRACE precise orbit determination by dynamic method
, 2018 With the successful use of GPS-only-based POD (precise orbit determination), more and more satellites carry onboard GPS receivers to support their orbit accuracy requirements.
Kai Li, Nan-nan Guo, Xu-hua Zhou, Bin Wu
core +1 more source
COST-G gravity field models: application in SLR orbit determination [PDF]
, 2022 The Combination Service for Time-varible Gravity fields (COST-G), as a product center of the International Gravity Field Service (IGFS) of the International Association of Geodesy (IAG), provides monthly GRACE, GRACE-FO and Swarm gravity fields that are ...
Thaller, Daniela +5 more
core +1 more source
Neutralization of the PTX3/CD44 axis suppresses TGF‐β1 signaling in kidney fibrosis
FEBS Letters, EarlyView.This study investigates how the PTX3/CD44 axis promotes kidney fibrosis by activating TGF‐β1 signaling. We demonstrate that the neutralizing antibody WHC‐001 effectively inhibits this pathway, suppressing myofibroblast activation and partial epithelial–mesenchymal transition (EMT).
Chao‐Chun Cheng +8 more
wiley +1 more source
Effect of lunar gravity models on Chang'E-2 orbit determination using VLBI tracking data
Geodesy and Geodynamics, 2016 The precise orbit determination of Chang'E-2 is the most important issue for successful mission and scientific applications, while the lunar gravity field model with big uncertainties has large effect on Chang'E-2 orbit determination.
Erhu Wei +3 more
doaj +1 more source
Pure Geometrical Precise Orbit Determination of a LEO Based on GNSS Carrier Phase Observations [PDF]
, 2009 The interest in a precise orbit determination of Low Earth Orbiters (LEOs) especially in pure geometrical mode using GNSS observations has been grown rapidly.
Shabanloui, Akbar, Ilk, Karl Heinz
core +1 more source
DNA ligase LigE increases bacterial transformation with damaged extracellular DNA
FEBS Letters, EarlyView.The DNA ligase LigE from the naturally competent Gram‐negative bacterium Neisseria gonorrhoaea increases transformation with cut extracellular DNA. This process is ATP‐dependent and relies on the catalytic activity of LigE; it also requires that LigE contains an intact periplasmic localisation sequence, indicating that ligE functions in the periplasm ...
Jolyn Pan +4 more
wiley +1 more source
Best hypotheses search on iso-energy-grid for initial orbit determination and track association [PDF]
, 2013 Debris populating the geostationary orbit is mainly observed by ground-based optical telescopes. Short measurement arcs, known as tracklets, provide line-of-sight information along with the associated rates of change.
Weigel, Martin +3 more
core
Going viral − Virus‐targeting nanobodies for research, diagnostics and therapy
FEBS Letters, EarlyView.The increasing prevalence of viral diseases represents a major threat for global human health. Nanobodies, small binding fragments derived from camelid heavy‐chain antibodies, offer versatile tools for viral research, diagnostics, and antiviral therapy.
Domenic Ebert, Ulrich Rothbauer
wiley +1 more source
FedSat Orbit Determination: Results From Daily GPS Flight Code Observations [PDF]
, 2003 The Australian Federation Satellite, FedSat, was successfully launched into a 780-km low-earth orbit on 14 December 2002. Since then, the onboard Blackjack GPS receiver has operated on a duty cycle basis, providing effective data sets at an average of 10
Enderle, Werner +2 more
core