Results 141 to 150 of about 46,320 (319)
Transactions in GIS, Volume 30, Issue 1, February 2026.ABSTRACT This study examined GPS positioning accuracy in high‐density urban environments using Hong Kong as a representative case study. Through field measurements along 32 testing routes using three GPS devices, we evaluated GPS performance across diverse urban morphologies to assess associations between complex urban characteristics and positioning ...
Tianyu Li, Yanjia Cao, Grant McKenzie
wiley +1 more source
Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.Abstract On March 9th $9\mathrm{th}$, 2023, three small earthquakes (3.8≤Mw≤4.5) $(3.8\le {M}_{w}\le 4.5)$ occurred near Umbertide (Central Italy), within 4 hours. Analyzing seismic ambient noise in the frequency band 0.1–1 Hz from six seismometers within 20 km of the Mw 4.5, we detect a significant drop in seismic velocity at the time of occurrence of
Eugenio Mandler +7 more
wiley +1 more source
Enhancing GNSS Robustness in Automotive Applications with Supercorrelation: Experimental Results in Urban Scenarios [PDF]
Javier G. García +14 more
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A Multi-Scale Anti-Multipath Algorithm for GNSS-RTK Monitoring Application [PDF]
, 2023 Shouhua Wang +4 more
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Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.Abstract Traditional nadir altimeters struggle with coastal water surface elevation (WSE) measurement and fine‐scale river‐estuary interactions, due to land‐water signal interference and their wide inter‐track spacing. The wide‐swath Surface Water and Ocean Topography (SWOT) mission, using a new Ka‐band radar interferometer, aims to address these ...
Youtong Rong +21 more
wiley +1 more source
Erroneous GNSS Strain Rate Patterns and their Application to Investigate the Tectonic Credibility of GNSS Velocities [PDF]
, 2016 Andrzej Araszkiewicz +2 more
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Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.Abstract A band of total electron content (TEC) depletions of about 5–15 TEC unit passed over the Korean Peninsula after midnight during the geomagnetic storm on 11 May 2024. This magnitude of TEC depletions has not been previously reported in the region.
Hyosub Kil +6 more
wiley +1 more source
Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.Abstract Sporadic E (Es) layer plays essential role in ionosphere‐atmosphere coupling. Theoretical simulations show that the atmospheric gravity waves (GWs) in the lower thermosphere are the main modulatory source on Es dynamics at small spatial scales and short periods.
Junyi Wang +9 more
wiley +1 more source
Application of GNSS derived precipitable water vapour prediction in West Africa [PDF]
, 2019 Akwasi Afrifa Acheampong, Kwame Obeng
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