Results 151 to 160 of about 41,139 (300)
A 16-parameter GEO Broadcast Ephemeris [PDF]
Journal of Geodesy and Geoinformation Science, 2018 Currently, the broadcast ephemerides used in GEOs are same as those of the MEOs and IGSOs in the BeiDou navigation constellation. However, a trade-off strategy, i.e.
Zhongkai ZHANG,Lan DU,Li LIU,Feng HE,Yu LU,Peiyuan ZHOU
doaj
ARMA Prediction of SBAS Ephemeris and Clock Corrections for Low Earth Orbiting Satellites
International Journal of Aerospace Engineering, 2015 For low earth orbit (LEO) satellite GPS receivers, space-based augmentation system (SBAS) ephemeris/clock corrections can be applied to improve positioning accuracy in real time.
Jeongrae Kim, Mingyu Kim
doaj +1 more source
A Double-Difference Doppler Shift-Based Positioning Framework with Ephemeris Error Correction of LEO Satellites [PDF]
arXivIn signals of opportunity (SOPs)-based positioning utilizing low Earth orbit (LEO) satellites, ephemeris data derived from two-line element files can introduce increasing error over time. To handle the erroneous measurement, an additional base receiver with a known position is often used to compensate for the effect of ephemeris error when positioning ...
arxiv
Variability Type Determination and High Precision Ephemeris for NSVS 7606408 [PDF]
The Journal of the American Association of Variable Star
Observers, vol.40 n.2, 2012, p.955, 2014 A photometric campaign analysis of the star NSVS 7606408 has been conducted in order to determine the type of variability and high accuracy ephemeris. By combining the obtained data with other datasets available, it was tried to improve the determination of the period, highlighting, however, a possible minimal change of the period over the years.
arxiv
Ephemeris for Physical Observations of Jupiter, 1892 (continued) [PDF]
, 1892 A. Marth
openalex +1 more source
Ephemeris and hazard assessment for near-Earth asteroid (101955) Bennu based on OSIRIS-REx data
, 2021 D. Farnocchia +17 more
semanticscholar +1 more source
Universality of free fall versus ephemeris [PDF]
arXiv, 2017 When a light scalar field with gravitational strength interacts with matter, the weak equivalence principle is in general violated, leading for instance to a violation of the universality of free fall. This has been known and tested for a while.
arxiv
Ephemeris for Physical Observations of Jupiter, 1901 [PDF]
, 1900 A. C. D. Crommelin
openalex +1 more source
A new and improved ephemeris for the hot subdwarf eclipsing binary SDSS J082053.53+000843.4 [PDF]
arXiv, 2015 SDSS J082053.53+000843.4 belongs to the HW Vir family of short period binary systems and was first identified by Geier in 2011. Whilst three subsequent papers have focused on the morphology of this system, little has been published on the system period and its constancy.
arxiv