Results 141 to 150 of about 14,281,997 (294)

Solutions to the technical limitations of GNSS for indoor localisation

, 2023
openLa localizzazione in ambienti indoor è oramai divenuta fondamentale in diversi ambiti come la sanità, l'istruzione, il commercio, l'intrattenimento, il trasporto e la logistica. L'utilizzo di tecnologie basate sul Global Navigation Satellite System
ZIGBUO, DANIEL YEBOAH
core  

Impacts of Mid‐Latitude Ionospheric Dynamics on RF Applications During the November 2025 Superstorm Event

Geophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract This study demonstrates the intriguing and complex interplay among auroral precipitation, enhanced TEC, density irregularities, and amplitude scintillations observed during the November 2025 superstorm. For the first time, we present observations of strong amplitude scintillation across continental United States (CONUS)—nearly from coast to ...
E. Yizengaw, W. Younas, Y. Nishimura, C. Gabrielse, T. Beach, A. J. Coster, R. Pradipta, K. M. Groves   +7 more
wiley   +1 more source

Using Agricultural Production to Evaluate the Novel Method of Reducing the Uncertainty in GNSS-R Soil Moisture Retrieval

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Soil moisture (SM) is one of the important driving factors for promoting photosynthesis of vegetation to produce organic carbon. Global satellite navigation system reflectometry (GNSS-R) has considerable potential in monitoring regional SM due to its ...
Yan Li, Songhua Yan, Ruonan Qiu, Jianya Gong, Wei Wang   +4 more
doaj   +1 more source

Predictive models of seed yield in intermediate wheatgrass (Thinopyrum intermedium): The added value of a time series of multispectral imagery in semiarid environments

Agronomy Journal, Volume 118, Issue 5, September/October 2026.
Abstract Accurate estimation of seed yield in perennial grains like Thinopyrum intermedium (intermediate wheatgrass [IWG]) remains a challenge due to high interannual and spatial variability of this important trait. We evaluated the potential of before‐harvest unmanned aerial vehicle (UAV)‐derived multispectral vegetation indices to predict IWG seed ...
Claire Spickermann, Efrain Duarte, Steve Larson, Zayne Maughan, Alexander Hernandez   +4 more
wiley   +1 more source

Analysis of Key Issues on GNSS-R Soil Moisture Retrieval Based on Different Antenna Patterns. [PDF]

Sensors (Basel), 2018
Li F, Peng X, Chen X, Liu M, Xu L.
europepmc   +1 more source

Rooftop Breeding Does Not Consistently Explain Variation in Yolk Testosterone in Herring Gulls

Ecology and Evolution, Volume 16, Issue 9, September 2026.
Rooftop‐ and ground‐breeding represent distinct ecological contexts that may influence maternal hormone allocation in Herring gulls. Yolk testosterone concentrations differed between rooftop‐ and ground‐breeding pairs in one of 2 years but were not consistently associated with breeding context, nest density or proxies of maternal quality, suggesting ...
Jolien Van Malderen, Luc Lens, Frederick Verbruggen, Eric W. M. Stienen, Wendt Müller   +4 more
wiley   +1 more source

The Global Navigation Satellite Systems Reflectometry (GNSS-R) Microwave Interferometric Reflectometer: Hardware, Calibration, and Validation Experiments. [PDF]

Sensors (Basel), 2019
Onrubia R, Pascual D, Pascual D, Querol J, Park H, Camps A.   +5 more
europepmc   +1 more source

Effects of a Catastrophic Debris‐Flow on a Coastal Salt Marsh

Global Change Biology Communications, Volume 1, Issue 3, September 2026.
Debris‐flows are extreme events that can occur when wildfire is followed by heavy precipitation. Although debris‐flow effects are primarily assessed in montane systems, here, we document the downstream physical and biological impacts of a debris‐flow in a coastal salt marsh.
Rachel S. Smith, Kathryn M. Beheshti, Tom W. Bell, Andrew J. Brooks, Justin C. Hoesterey, Russell Johnston, Henry M. Page   +6 more
wiley   +1 more source

Intercomparison of Soil Moisture Retrieved from GNSS-R and from Passive L-Band Radiometry at the Valencia Anchor Station. [PDF]

Sensors (Basel), 2019
Yin C, Lopez-Baeza E, Martin-Neira M, Fernandez-Moran R, Fernandez-Moran R, Yang L, Navarro-Camba EA, Egido A, Mollfulleda A, Li W, Cao Y, Zhu B, Yang D.   +12 more
europepmc   +1 more source

Geophysical Surveys and LiDAR Topographic Analysis of the Vallum and Its Wider Landscape at Milking Gap, Hadrian's Wall

Geoarchaeology, Volume 41, Issue 5, September/October 2026.
ABSTRACT We present the results of geophysical surveys and LiDAR analysis of the Vallum and wider landscape at Milking Gap, on Hadrian's Wall. Magnetic gradiometry and Electrical Resistivity Tomography (ERT) surveys were utilised to investigate the landscape context of the Vallum and provide insight into the stratigraphy of the preserved earthworks ...
Sam Bithell, Stefan Nielsen, Richard Hingley   +2 more
wiley   +1 more source