Results 61 to 70 of about 6,099 (169)

Wheat Sowing Practices in No‐Tillage Systems Modify the Microrelief and Hydrosedimentological Attributes: RPAS‐Based Photogrammetry

Land Degradation &Development, Volume 37, Issue 15, Page 10911-10926, September 2026.
ABSTRACT The microtopographic characteristics of terrain are modified by soil management and conservation practices, affecting water infiltration, storage, runoff generation, and sediment transport. However, assessing soil microtopography at representative spatial scales remains challenging and time‐consuming.
Jhonatan Spliethoff, Miguel D. Fuentes‐Guevara, Leandro Rampim, Marcelo M. L. Müller, Aline Marques Genú, Cristiano A. Pott   +5 more
wiley   +1 more source

Contribution of Russian (Soviet) Jurisprudence to Formation and Development of International Space Law

Московский журнал международного права, 2015
Russian (Soviet) Lawyers contributed significantly to the formation and development of corpus juris spatialis. In particular, according to former Chairman of the UN Committee on the peaceful uses of outer space Ambassador Dr.
Yuri Mikhailovich Kolosov, Mariam R. Yuzbashyan   +1 more
doaj   +1 more source

Performance Assessment of PPP Surveys with Open Source Software Using the GNSS GPS–GLONASS–Galileo Constellations

Applied Sciences, 2020
In this work, the performance of the multi-GNSS (Global Navigation Satellite System) Precise Point Positioning (PPP) technique, in static mode, is analyzed.
Antonio Angrisano, Gino Dardanelli, Anna Innac, Alessandro Pisciotta, Claudia Pipitone, Salvatore Gaglione   +5 more
doaj   +1 more source

Monitoring GPS‐collared moose by ground versus drone approaches: efficiency and disturbance effects

Wildlife Biology, Volume 2026, Issue 5, September 2026.
Efficient wildlife management requires precise monitoring methods, for example to estimate population density, reproductive success, and survival. Here, we compared the efficiency of drone (equipped with a RGB camera) and ground approaches to detect and observe GPS‐collared female moose Alces alces and their calves. We also quantified how drone (n = 42)
Martin Mayer, Erlend Furuhovde, Kristoffer Nordli, Giorgia Myriam Ausilio, Petter Wabakken, Ane Eriksen, Alina L. Evans, Karen Marie Mathisen, Barbara Zimmermann   +8 more
wiley   +1 more source

Assimilating GNSS Airborne Radio Occultation Bending Angles With MPAS–JEDI During a Sequence of Atmospheric Rivers

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 9, September 2026.
Abstract Global Navigation Satellite System (GNSS) airborne radio occultation (ARO) observations, collected during Atmospheric River Reconnaissance (AR Recon) campaigns, enhance AR sampling beyond traditional dropsondes. Assimilating ARO bending angles requires a forward operator accounting for ARO geometry and proper integration in a data assimilation
Ivette Hernández Baños, Jennifer S. Haase, Pawel Hordyniec, Bing Cao, Zhiquan Liu, Phuong‐Nghi Do   +5 more
wiley   +1 more source

The Impacts of Tropospheric Gravity Wave‐Generated MSTIDs on Skywaves at Mid‐latitude North American Sector Observed and Modeled Using SuperDARN HF Radars

Radio Science, Volume 61, Issue 9, September 2026.
Abstract Trans‐ionospheric high frequency (HF: 3–30 MHz) response to atmospheric gravity waves (GWs) is studied in the middle‐latitude ionosphere in relation to thunderstorm activity. SuperDARN HF radar observations are compared against the model simulations to quantify the impact of GW‐generated medium‐scale traveling ionospheric disturbances (MSTID ...
S. Chakraborty, P. A. Inchin, S. Debchoudhury, B. Bergsson, M. Zettergren, J. M. Ruohoniemi   +5 more
wiley   +1 more source

An evaluation of potential solar radio emission power threat on GPS and GLONASS performance

, 2012
The L-band solar radio emission has recently been regarded as a potential threat to stable GPS and GLONASS performance. However, the threat has not been completely investigated or assessed so far.
Afraimovich, Edward L., Jin, Shuanggen, Demyanov, Vladislav V.   +2 more
core  

Correlation of High‐Latitude Scintillation With Auroral Precipitation: Case Studies Using GNSS Radio Occultation Data From PlanetiQ

Space Weather, Volume 24, Issue 9, September 2026.
Abstract This study presents a survey of high‐latitude ionospheric scintillation using GNSS radio occultation (RO) data from the PlanetiQ satellite. The analysis examines 483 high‐latitude RO tracks between January and May 2023, with 371 tracks exhibiting scintillation events.
Margaret W. Chen, Endawoke Yizengaw, James H. Hecht, Paul Straus, Charles S. Carrano, Tibor Durgonics, Keith M. Groves   +6 more
wiley   +1 more source

Impact of Solar Cycles on the Electron Density in the Ionosphere—An 18‐Year Combined Observation From FORMOSAT‐3/COSMIC and FORMOSAT‐7/COSMIC‐2

Journal of Geophysical Research: Space Physics, Volume 131, Issue 9, September 2026.
Abstract The Earth's ionosphere is sensitive to variations in solar irradiance associated with the 11‐year and the 27‐day solar cycles (SCs). Previous studies have suggested that the peak altitude of the 27‐day SC response in ionospheric electron density is significantly higher than that of the 11‐year SC response, but the underlying mechanism remains ...
Shuhui Wang, King‐Fai Li, Mao‐Chang Liang, Ka‐Kit Tung, Lin Tan   +4 more
wiley   +1 more source

Ship‐Based GNSS Tsunami Detection: Pilot Network Demonstration

Journal of Geophysical Research: Oceans, Volume 131, Issue 9, September 2026.
Abstract We demonstrate the potential for ship‐based GNSS systems to contribute to tsunami warning. We built a pilot network of 10 ships—8 commercial and 2 research vessels—equipped with a tsunami detection package consisting of a geodetic‐grade GNSS antenna and receiver, and satellite internet communications.
James H. Foster, Todd L. Ericksen, Bruce E. O. Thomas, Jonathan Avery   +3 more
wiley   +1 more source