Results 61 to 70 of about 26,872 (287)
Remote Sensing, 2021 Positioning accuracy is affected by the combined effect of user range errors and the geometric distribution of satellites. Dilution of precision (DOP) is defined as the geometric strength of visible satellites.
Haomeng Cui, Shoujian Zhang
doaj +1 more source
Orbital Period Refinement of CoRoT Planets with TESS Observations
Frontiers in Astronomy and Space Sciences, 2021 CoRoT was the first space mission dedicated to exoplanet detection. Operational between 2007 and 2012, this mission discovered 37 transiting planets, including CoRoT-7b, the first terrestrial exoplanet with a measured size. The precision of the published
Peter Klagyivik +8 more
doaj +1 more source
Prospects in the orbital and rotational dynamics of the Moon with the advent of sub-centimeter lunar laser ranging [PDF]
, 2007 Lunar Laser Ranging (LLR) measurements are crucial for advanced exploration of the laws of fundamental gravitational physics and geophysics. Current LLR technology allows us to measure distances to the Moon with a precision approaching 1 millimeter.
A. Escapa +97 more
core +2 more sources
Aerotecnica Missili & Spazio, 2021 Jupiter and its moons are a complex dynamical system that include several phenomena like tides interactions, moon’s librations and resonances. One of the most interesting characteristics of the Jovian system is the presence of the Laplace resonance ...
A. Magnanini
semanticscholar +1 more source
The Lense-Thirring effect in the Jovian system of the Galilean satellites and its measurability [PDF]
, 2005 In this paper we investigate the possibility of measuring the post-Newtonian general relativistic gravitomagnetic Lense-Thirring effect in the Jovian system of its Galilean satellites Io, Europa, Ganymede and Callisto in view of recent developments in ...
Iorio L. +6 more
core +4 more sources
Izračun položaja GPS-satelita iz podatkov oddanih efemerid : GPS-Orbit Computation from Broadcast Ephemeris Data [PDF]
Geodetski Vestnik, 2004 The article describes the theoretical point of view of the GPS-broadcast ephemerides application. Beside the raw GPS observations, any kind of GPS ephemerides represents indispensable data in the GPS processing engine.
Bojan Stopar +1 more
doaj
The early meteorological network of the Societas Meteorologica Palatina (1781–1792): foundation, organization, and reception [PDF]
History of Geo- and Space Sciences, 2023 The Societas Meteorologica Palatina arranged the first international meteorological network in a modern sense, being in operation between 1781 and 1792 during the last period of enlightenment. A total of 39 stations contributed observations. The original
P. Winkler
doaj +1 more source
COMMISSION 4: EPHEMERIDES [PDF]
Proceedings of the International Astronomical Union, 2008 JPL planetary ephemeris development has been very active assimilating measurements from current planetary missions and supporting future missions. The NASA Mars Science Laboratory (MSL) mission with launch in 2009 requires knowledge of the Earth and Mars ephemerides with 30m accuracy. By comparison, the accuracy of the Mars ephemeris in the widely used
Toshio Fukushima +10 more
openaire +2 more sources
Pulsar Timing with the Parkes Radio Telescope for the Fermi Mission
, 2009 We report here on two years of timing of 168 pulsars using the Parkes radio telescope. The vast majority of these pulsars have spin-down luminosities in excess of 10^34 erg/s and are prime target candidates to be detected in gamma-rays by the Fermi Gamma-
A. Possenti +22 more
core +1 more source