Results 111 to 120 of about 5,602 (209)

Trends of productivity of water in rain-fed agriculture: historical perspective [PDF]

Rain-fed farmingProductivityCrop productionWater ...
Igbadun, H. E., Mahoo, H. F., Salim, B. A., Tarimo, A. K. P. R.   +3 more
core  

Analysis strategies and software for geodetic VLBI

, 2004
This article describes currently used analysis strategy and data analysis software for geodetic VLBI.Today's geodetic observing strategies are shortly presented, and the geodetic VLBI observables and data modeling are briefly discussed.
Haas, R.
core   +1 more source

Relevance of PSInSAR Analyses at ITRF Co-location Sites

Abstract The PSInSAR (Persistent Scatterer Interferometric Synthetic Aperture Radar) technique allows determining deformation maps over large areas. In this paper, we investigate the applicability of PSInSAR analyses for ITRF co-location sites characterized by spatial extents varying between 20 m and 3 km.
Collilieux, Xavier, Altamimi, Zuheir, Chen, Jingyi, Courde, Clément, Du, Zheyuan, Furhmann, Thomas, Gisinger, Christoph, Gruber, Thomas, Hippenstiel, Ryan, Poreh, Davod, Rebischung, Paul, Sato, Yudai   +11 more
openaire   +2 more sources

Enhanced Stochastic Models for VLBI Invariant Point Estimation and Axis Offset Analysis

Remote Sensing
The accuracy and stability of Very Long Baseline Interferometry (VLBI) systems are essential for maintaining global geodetic reference frames such as the International Terrestrial Reference Frame (ITRF). This study focuses on the precise determination of
Chang-Ki Hong, Tae-Suk Bae
doaj   +1 more source

Optimal distribution of VLBI transmitters in the Galileo space segment for frame ties. [PDF]

Earth Planets Space, 2023
Wolf H, Böhm J.
europepmc   +1 more source

The Implementation of Precise Point Positioning (PPP): A Comprehensive Review. [PDF]

Sensors (Basel), 2023
Elsheikh M, Iqbal U, Noureldin A, Korenberg M.   +3 more
europepmc   +1 more source

Short-term daytime restricted feeding in rats with high salt impairs diurnal variation of Na⁺ excretion.

Am J Physiol Renal Physiol, 2022
Rhoads MK, Speed JS, Roth KJ, Zhang D, Jin C, Gamble KL, Pollock DM.   +6 more
europepmc   +1 more source

Analysis of the Quality of SLR Station Coordinates Determined from Laser Ranging to the LARES Satellite. [PDF]

Sensors (Basel), 2021
Schillak S, Lejba P, Michałek P.
europepmc   +1 more source

Ionospheric Plasma IRregularities - IPIR - Data Product Based on Data From the Swarm Satellites. [PDF]

J Geophys Res Space Phys, 2022
Jin Y, Kotova D, Xiong C, Brask SM, Clausen LBN, Kervalishvili G, Stolle C, Miloch WJ.   +7 more
europepmc   +1 more source

Garmin GPSMAP 66sr: Assessment of Its GNSS Observations and Centimeter-Accurate Positioning. [PDF]

Sensors (Basel), 2022
Wanninger L, Heßelbarth A, Frevert V.
europepmc   +1 more source