Results 51 to 60 of about 126,181 (207)
Journal of Geophysical Research: Solid Earth, Volume 130, Issue 12, December 2025.Abstract Seismicity during non‐eruptive periods is useful for observing stress changes related to magmatic transport and volatile exsolution within active volcanoes. Mount St. Helens in Washington, USA, is the most active volcano in the continental United States and has been in quiescence since 2008. To explore the processes driving seismicity at Mount
Brenton W. Hirao +4 more
wiley +1 more source
Space Weather, Volume 23, Issue 11, November 2025.Abstract Satellite navigation systems are vulnerable to space weather disturbances, which can degrade positioning accuracy and potentially increase the collision risk of unmanned aerial vehicles (UAVs). This study investigates the influence of navigation errors caused by ionospheric scintillation on UAV encounter scenarios. Two route configurations are
Dabin Xue +4 more
wiley +1 more source
The Limits of In-Run Calibration of MEMS Inertial Sensors and Sensor Arrays [PDF]
, 2016 MEMS accelerometers and gyroscope triads now cost less than $10, potentially opening up many new applications. However, these sensors require calibration prior to navigation use.
Groves, P, Martin, H, Newman, M
core +1 more source
Space Weather, Volume 23, Issue 10, October 2025.Abstract Using observations from the National Space Weather Laboratory's (LANCE acronym in Spanish) ground‐based network, we characterize regional space weather conditions in Mexico during the solar minimum 24/25 (2018–2020). Data analyzed include regional geomagnetic indices (the regional K index, Kmex, and Δ ${\Delta }$H), ionospheric Total Electron ...
J. A. Gonzalez‐Esparza +6 more
wiley +1 more source
Multisensor navigation systems: a remedy for GNSS vulnerabilities? [PDF]
, 2016 Space-based positioning, navigation, and timing (PNT) technologies, such as the global navigation satellite systems (GNSS) provide position, velocity, and timing information to an unlimited number of users around the world.
Grejner-Brzezinska, Dorota A. +5 more
core +2 more sources
Impacts of the May 2024 Extreme Geomagnetic Storm on Global High‐Accuracy GPS Positioning Solutions
Space Weather, Volume 23, Issue 10, October 2025.Abstract The May 2024 geomagnetic storm has been recognized as the most severe one in the past two decades and was categorized as an “extreme” (G5) event according to the NOAA space weather scales. This study applies Precise Point Positioning (PPP) software PRIDE PPP‐AR to over 5,800 worldwide GNSS receiver data to highlight the vulnerability of high ...
Zhe Yang, Y. T. Jade Morton
wiley +1 more source
GA-SVR and pseudo-position-aided GPS/INS integration during GPS outage [PDF]
, 2015 The performance of Global Positioning System and Inertial Navigation System (GPS/INS) integrated navigation is reduced when GPS is blocked. This paper proposes an algorithm to overcome the condition where GPS is unavailable.
Alpaydin +11 more
core +3 more sources
Journal of Geophysical Research: Atmospheres, Volume 130, Issue 17, 16 September 2025.Abstract This study shares over 25 years of weather and climate data collected from Iceland's glaciers. Since 1994, scientists have recorded weather observations from stations installed on the glaciers. These records help understand how the local climate is changing and implications for glacier melt. The weather station network covers many parts of the
Andri Gunnarsson +4 more
wiley +1 more source
Georeferencing of condition information from railway infrastructure [PDF]
, 2015 The condition-based preventive maintenance of the rail infrastructure shall reduce maintenance costs and increase the availability of the rail network in the future.
Almeida, Eduardo C. V., Johannes, Lars
core
On the Outage Probability of Localization in Randomly Deployed Wireless Networks [PDF]
, 2017 This paper analyzes the localization outage probability (LOP), the probability that the position error exceeds a given threshold, in randomly deployed wireless networks. Two typical cases are considered: a mobile agent uses all the neighboring anchors or
Shen, Yuan, Zhou, Fengyu
core +2 more sources