Results 91 to 100 of about 700 (166)

Global Dynamics and Ephemerides

, 2012
When speaking of Gaia it is instructive to remember the first ESA mission dedicated to high precision astronometry HIPARRCOS launched in August 1989. HIPPARCOS can be considered as Gaia's precursor, indeed the observing strategy aspects are similar and both missions were designed specifically for high precision astronmetry. After three and a half years
Hestroffer, Daniel, David, Pedro
openaire   +2 more sources

A Study on a Low-Cost IMU/Doppler Integrated Velocity Estimation Method Under Insufficient GNSS Observation Conditions. [PDF]

Sensors (Basel)
Wang Y, Zhang H, Li K, Xu H, Chen Y.
europepmc   +1 more source

Enhancing reliability and efficiency of flight dynamics systems for planetary exploration through KPLO ground operation experience. [PDF]

Sci Rep
Song YJ, Bang J, Bae J, Hong S, Kim D, Lee D.   +5 more
europepmc   +1 more source

Oceanic and ionospheric tidal magnetic fields extracted from global geomagnetic observatory data. [PDF]

Philos Trans A Math Phys Eng Sci
Tyler RH, Trossman DS.
europepmc   +1 more source

The history of pertussis: from an ancient scourge to a contemporary health burden. [PDF]

J Prev Med Hyg, 2023
Galassi FM, Varotto E, Martini M.
europepmc   +1 more source

Uncertainty Quantification of First Fix in a Time-Differenced Carrier Phase Observation Model. [PDF]

Sensors (Basel)
Cherfi H, Lesouple J, Solà J, Thevenon P.   +3 more
europepmc   +1 more source

Ephemerides [PDF]

Transactions of the International Astronomical Union, 1960
openaire   +1 more source

Improvements in PPP by Integrating GNSS with LEO Satellites: A Geometric Simulation. [PDF]

Sensors (Basel)
Alghisi M, Zallemi N, Biagi L.
europepmc   +1 more source

The high optical brightness of the BlueWalker 3 satellite. [PDF]

Nature, 2023
Nandakumar S, Eggl S, Tregloan-Reed J, Adam C, Anderson-Baldwin J, Bannister MT, Battle A, Benkhaldoun Z, Campbell T, Colque JP, Damke G, Plauchu Frayn I, Ghachoui M, Guillen PF, Kaeouach AE, Krantz HR, Langbroek M, Rattenbury N, Reddy V, Ridden-Harper R, Young B, Unda-Sanzana E, Watson AM, Walker CE, Barentine JC, Benvenuti P, Di Vruno F, Peel MW, Rawls ML, Bassa C, Flores-Quintana C, García P, Kim S, Longa-Peña P, Ortiz E, Otarola Á, Romero-Colmenares M, Sanhueza P, Siringo G, Soto M.   +39 more
europepmc   +1 more source

HDR Merging of RAW Exposure Series for All-Sky Cameras: A Comparative Study for Circumsolar Radiometry. [PDF]

J Imaging
Matteschk P, Aragón M, Gomez J, Thorning JK, Meilinger S, Houben S.   +5 more
europepmc   +1 more source