Results 201 to 210 of about 57,094 (309)

A Major Update to the PyIRI Model

Space Weather, Volume 24, Issue 6, June 2026.
Abstract This paper presents a major update to the PyIRI model, a fully vectorized Python implementation of the International Reference Ionosphere (IRI). The update reformulates the IRI core coefficients using spherical harmonics in Quasi‐Dipole (QD) latitude and Magnetic Local Time coordinates, replacing the legacy geographic‐coordinate‐based basis ...
Nina Servan‐Schreiber, Victoriya V. Forsythe, Meghan R. Burleigh, Kate A. Zawdie, Douglas P. Drob, Angeline G. Burrell, Joshua Semeter   +6 more
wiley   +1 more source

A quantile-based composite ionospheric disturbance estimator for RTK positioning reliability. [PDF]

Sci Rep
Vallis A, Celms A, Zvirgzds J, Vallis J.
europepmc   +1 more source

High‐Latitude GPS Position Error During Substorms

Space Weather, Volume 24, Issue 6, June 2026.
Abstract Substorms produce rapid fluctuations in Global Navigation Satellite System (GNSS) signals, leading to degraded positioning performance at high latitudes. This study investigates the correlation of auroral structures on Global Positioning System (GPS) Precise Point Positioning (PPP) error during three substorm events with different strengths ...
Weixuan Liao, Yukitoshi Nishimura, Waqar Younas, Wen Li, Keith M. Groves, Eric F. Donovan, Vassilis Angelopoulos   +6 more
wiley   +1 more source

A novelty mode decomposition method and its application in dynamic characteristic identification of bridge GNSS monitoring data. [PDF]

Sci Prog
Wang X, Luo L, Liu J.
europepmc   +1 more source

Ionospheric Characterization Over Iran Using Multi‐Frequency IMB HF Transmitters and Global WSPRNET Reception During the 12 November 2025 Geomagnetic Storm

Space Weather, Volume 24, Issue 6, June 2026.
Abstract The Ionospheric Monitoring Beacon network in Iran provides continuous, multi‐frequency high‐frequency (HF) transmissions using WSPRNET modulation, enabling global reception and near–real‐time monitoring of ionospheric propagation conditions.
A. Mahmoudian, Saba Hafizi Lotfabadi, Mohammad Azimi   +2 more
wiley   +1 more source

A 3D Indoor Modelling Method Using 360° Panoramic Images and Its Application to CCTV Camera Placement Optimization. [PDF]

Sensors (Basel)
Pradhana AAS, Funabiki N, Kotama IND, Batubulan KS, Sugiartawan P.   +4 more
europepmc   +1 more source

Hydrodynamic Characteristics of the Mainstem–Tributary Confluence in a Thermally Stratified Reservoir and the Effects of Selective Withdrawal

Water Resources Research, Volume 62, Issue 6, June 2026.
Abstract Hydrodynamics characteristics in the mainstem–tributary confluence profoundly affect the local environment and ecology. Thermal stratification widely occurs in large reservoirs, and the need to investigate hydrodynamics of mainstem–tributary confluences is urgent. Moreover, selective withdrawal is often used to regulate the outflow temperature,
Wei He, Juecai Wu, Lei Xu, Haiyang Wang, Longfei Wang, Ying Su, Zongyong Tian, Huiming Zhang, Hongwu Tang   +8 more
wiley   +1 more source

GNSS evaluation of GRACE-assimilated water storage models over 89 river basins worldwide. [PDF]

Sci Rep
Abbaszadeh M, van Dam T.
europepmc   +1 more source

HIWIND Observation of Daytime Thermospheric Winds Over New Zealand and Comparison With Model Simulation

Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract A balloon borne Fabry Perot interferometer called High altitude Interferometer WIND observation (HIWIND) flew from Wanaka, New Zealand (44.69S, 169.14E) in April 2025 to observe mid‐latitude thermospheric winds in the southern hemisphere for the first time.
Qian Wu, Haonan Wu, Wenbin Wang
wiley   +1 more source

Cognitive Radio-Based Ionospheric Scintillation Detection: A Low-Cost Framework for GNSS Detection and Monitoring in Equatorial Regions. [PDF]

Sensors (Basel)
Rodríguez JO, Dos Santos WA, Candido CN, Traslaviña DS, Tafur CL, Daza PM, Rodríguez Barón IF.   +6 more
europepmc   +1 more source