Results 91 to 100 of about 43,513 (282)
Impact of the precise ephemeris on accuracy of GNSS baseline in relative positioning technique
Vietnam Journal of Earth Sciences, 2020 For advanced geodesy tasks that require high-accuracy, such as tectonics, surveying services usually use not only long-baselines but also the duration of tracking GNSS satellites in a long (e.g., 24/7).
D. T. Tran +3 more
semanticscholar +1 more source
Real-Time Precise Point Positioning Method Considering Broadcast Ephemeris Discontinuities
NavigationWith advancements in the broadcast ephemeris accuracy of global navigation satellite systems (GNSSs), precise point positioning based on broadcast ephemeris (BE-PPP) is gradually showing promising prospects.
Quanrun Cheng +3 more
doaj +1 more source
Impact of Raman Scattering on SIF Retrievals From Hyperspectral Satellite Observations
Geophysical Research Letters, Volume 52, Issue 15, 16 August 2025.Abstract Solar‐induced chlorophyll fluorescence (SIF) retrieved from spaceborne measurements is widely used as an indicator of vegetation activity. However, this weak emission can be confused with the inelastic scattering component of sunlight that lacks distinctive Fraunhofer lines.
Suniti Sanghavi +5 more
wiley +1 more source
The orbit of Triton with new precise observations and the INPOP19a ephemeris
Astronomy & Astrophysics, 2020 Aims. The Gaia catalogue brings new opportunities and challenges to high-precision astronomy and astrometry. The precision of data reduction is therefore improved by a large number of reference stars with high-precision positions and proper motions ...
K. Tang +7 more
semanticscholar +1 more source
NavigationPlans to establish a satellite network around the Moon to support communication, position, navigation, and timing services are rapidly evolving. Satellites that are part of this system broadcast their ephemeris as finite parameters to lunar users for ...
Marta Cortinovis +2 more
doaj +1 more source
Schrödinger's Doctrine of Identity: On the Role of Advaita Vedānta in Erwin Schrödinger's Thought
Berichte zur Wissenschaftsgeschichte, Volume 48, Issue 1-2, Page 44-71, August 2025.Ever since Erwin Schrödinger learned about Indian thought through Arthur Schopenhauer, it occupied a visible role in both his published writings and personal books. Schrödinger called for a “blood transfusion” of Indian thought into the West and, in one notebook, construed the Upaniṣadic slogan “Brahman = Atman” as the “closest thing to the truth ...
Thijs M. K. Latten
wiley +1 more source
The new lunar ephemeris INPOP17a and its application to fundamental physics [PDF]
, 2017 We present here the new INPOP lunar ephemeris, INPOP17a. This ephemeris is obtained through the numerical integration of the equations of motion and of rotation of the Moon, fitted over 48 yr of lunar laser ranging (LLR) data. We also include the 2 yr of
Vishnu Viswanathan +5 more
semanticscholar +1 more source
Pluto’s ephemeris from ground-based stellar occultations (1988–2016) [PDF]
Astronomy & Astrophysics, 2019 Context. From 1988 to 2016, several stellar occultations have been observed to characterise Pluto’s atmosphere and its evolution. From each stellar occultation, an accurate astrometric position of Pluto at the observation epoch is derived.
J. Desmars +15 more
semanticscholar +1 more source
Signal in Space Error and Ephemeris Validity Time Evaluation of Milena and Doresa Galileo Satellites
Sensors, 2019 In August 2016, Milena (E14) and Doresa (E18) satellites started to broadcast ephemeris in navigation message for testing purposes. If these satellites could be used, an improvement in the position accuracy would be achieved.
Umberto Robustelli +2 more
doaj +1 more source