Results 41 to 50 of about 2,401,485 (384)

Optimal Beamforming for Hybrid Satellite Terrestrial Networks with Nonlinear PA and Imperfect CSIT [PDF]

open access: yes, 2020
In hybrid satellite-terrestrial networks (HSTNs), spectrum sharing is crucial to alleviate the "spectrum scarcity" problem. Therein, the transmit beams should be carefully designed to mitigate the inter-satellite-terrestrial interference.
Chen, Yunfei   +4 more
core   +2 more sources

Estimation of BDS pseudorange biases with high temporal resolution: feasibility, affecting factors, and necessity

open access: yesSatellite Navigation, 2023
A common practice adopted for the pseudorange bias estimation and calibration assumes that Global Navigation Satellite System satellite-dependent pseudorange biases vary gently over time. Whereupon satellite pseudorange biases are routinely estimated and
Ke Su, Guoqiang Jiao
doaj   +1 more source

GLEAM v3: satellite-based land evaporation and root-zone soil moisture

open access: yes, 2016
. The Global Land Evaporation Amsterdam Model (GLEAM) is a set of algorithms dedicated to the estimation of terrestrial evaporation and root-zone soil moisture from satellite data. Ever since its development in 2011, the model has been regularly revised,
B. Martens   +8 more
semanticscholar   +1 more source

Post-transcriptional regulation of satellite cell quiescence by TTP-mediated mRNA decay. [PDF]

open access: yes, 2015
Skeletal muscle satellite cells in their niche are quiescent and upon muscle injury, exit quiescence, proliferate to repair muscle tissue, and self-renew to replenish the satellite cell population.
Blackshear, Perry J   +7 more
core   +2 more sources

Multi-level autonomous integrity monitoring method for multi-source PNT resilient fusion navigation

open access: yesSatellite Navigation, 2023
For the integrity monitoring of a multi-source PNT (Positioning, Navigation, and Timing) resilient fusion navigation system, a theoretical framework of multi-level autonomous integrity monitoring is proposed.
Rui Chen, Long Zhao
doaj   +1 more source

Intra-specific variability and unusual organization of the repetitive units in a satellite DNA from Rana dalmatina: molecular evidence of a new mechanism of DNA repair acting on satellite DNA. [PDF]

open access: yes, 2006
We have characterized the S1 satellite from eight European populations of Rana dalmatina by Southern blot, cloning and a new method that determines the sequence variability of repetitive units in the genome.
CHINALI, GIANNI   +2 more
core   +1 more source

A FIR filter assisted with the predictive model and ELM integrated for UWB-based quadrotor aircraft localization

open access: yesSatellite Navigation, 2023
To improve the accuracy of the Ultra-Wide Band (UWB) based quadrotor aircraft localization, a Finite Impulse Response (FIR) filter aided with an integration of the predictive model and Extreme Learning Machine (ELM) is proposed in this work.
Yuan Xu   +4 more
doaj   +1 more source

Precise time scales and navigation systems: mutual benefits of timekeeping and positioning

open access: yesSatellite Navigation, 2020
The relationship and the mutual benefits of timekeeping and Global Navigation Satellite Systems (GNSS) are reviewed, showing how each field has been enriched and will continue to progress, based on the progress of the other field.
Patrizia Tavella, Gérard Petit
doaj   +1 more source

GNSS techniques for real-time monitoring of landslides: a review

open access: yesSatellite Navigation, 2023
Currently, Global Navigation Satellite System (GNSS) Real-Time Kinematic positioning (RTK) and Precise Point Positioning (PPP) techniques are widely employed for real-time monitoring of landslides.
Guanwen Huang, Shi Du, Duo Wang
doaj   +1 more source

HDAC4 regulates satellite cell proliferation and differentiation by targeting P21 and Sharp1 genes [PDF]

open access: yes, 2018
Skeletal muscle exhibits a high regenerative capacity, mainly due to the ability of satellite cells to replicate and differentiate in response to appropriate stimuli. Epigenetic control is effective at different stages of this process.
Adamo, Sergio   +9 more
core   +2 more sources

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