Results 51 to 60 of about 1,676 (181)
Geomatics, Natural Hazards & RiskEarthquakes release energy that triggers crustal deformation and atmospheric disturbances via surface waves, affecting the GNSS tropospheric delay. This study focuses on the 2025 Tibet MW6.8 and Myanmar MW7.9 earthquakes.
Hongzhan Zhou +4 more
doaj +1 more source
Tropospheric Delay Correction Based on a Three-Dimensional Joint Model for InSAR
Remote Sensing, 2019 Tropospheric delays in spaceborne Interferometric Synthetic Aperture Radar (InSAR) can contaminate the measurement of small amplitude earth surface deformation.
Huaping Xu +4 more
doaj +1 more source
Statistical description of tropospheric delay for InSAR: Overview and a new model [PDF]
2007 IEEE International Geoscience and Remote Sensing Symposium, 2007 This paper focuses on statistical modeling of water vapor fluctuations for InSAR. The structure function and power spectral density approaches are reviewed, summarizing their assumptions and results. The linking equations between these modeling techniques are reported.
John P. Merryman Boncori, Johan J. Mohr
openaire +1 more source
Insect Science, EarlyView.In this study, we examined whether realistic ozone concentrations can interfere with sexual communication in the insect pest Plutella xylostella, the diamondback moth. Ozone exposure caused a degradation of pheromone components, leading to significant changes in blend composition and component ratios.
Francesco Sorrentino +3 more
wiley +1 more source
Remote Sensing, 2022 Global navigation satellite system (GNSS) signals are affected by refraction when traveling through the troposphere, which result in tropospheric delay. Generally, the tropospheric delay is estimated as an unknown parameter in GNSS data processing.
Huan Zhang +6 more
doaj +1 more source
A Tunable Closed-Form Model for the Structure Function of Tropospheric Delay [PDF]
IEEE Geoscience and Remote Sensing Letters, 2008 Several interferometric synthetic aperture radar applications could benefit from the availability of a closed-form model for the second-order statistics of atmospheric delay. Due to the variability of the latter, it would also be desirable for the model to be tunable to some acquisition-specific information, describing the atmospheric state.
John P. Merryman Boncori, Johan J. Mohr
openaire +1 more source
Photochemistry and Photobiology, EarlyView.Three methods for substituting on‐site ambient ultraviolet radiation measurements for personal exposure measurements were investigated. Assuming spatial persistency of measurements from high‐grade instruments delivers lowest uncertainties up to distances of 82 km.
F. Lubitz +7 more
wiley +1 more source
A comprehensive comparison of atmospheric mapping functions for GPS measurements in Egypt
Journal of Geodetic Science, 2012 The principal limiting error source in the Global Positioning System (GPS) is the mismodeling of the delay experienced by radio waves in propagating through the atmosphere.
Younes S. A., Elmezayen A. G.
doaj +1 more source
An ERA5 tropospheric parameters-augmented approach for improving GNSS precise point positioning
Geodesy and Geodynamics, 2023 Precise Point Positioning (PPP) technology has developed into a potent instrument for geodetic positioning, ionospheric modeling, tropospheric atmospheric parameter detection, and seismic monitoring.
Liangke Huang +6 more
doaj +1 more source
Building a Continental‐Scale Geodetic Network: The Plate Boundary Observatory (PBO)
Perspectives of Earth and Space Scientists, Volume 7, Issue 1, December 2026.Abstract The Plate Boundary Observatory (PBO) transformed the use of geodesy in North America to study crustal deformation and plate boundary processes by establishing a continental‐scale, standardized, open‐access geodetic network. Built and operated by UNAVCO between 2003 and 2018 as part of the National Science Foundation (NSF)‐funded EarthScope ...
Emily E. Zawacki +5 more
wiley +1 more source