Results 41 to 50 of about 825,597 (228)
Remote Sensing, 2021 The Global Navigation Satellite System (GNSS) radio occultation (RO) is a remote sensing technique that uses International System of Units (SI) traceable GNSS signals for atmospheric limb soundings.
Yong Chen +3 more
doaj +1 more source
A nonlinear optimal, estimation inverse method for radio occultation measurements of temperature, humidity, and surface pressure [PDF]
, 2000 An optimal estimation inverse method is presented which can be used to retrieve simultaneously vertical profiles of temperature and specific humidity, in addition to surface pressure, from satellite-to-satellite radio occultation observations of the ...
J. R. Eyre +7 more
core +1 more source
Earth, Planets and Space, 2022 Scintillations in the signal-to-noise (SNR) profiles of GNSS radio occultation (RO) measurements at lower ionospheric altitudes are caused by compact layers of high ionization also known as sporadic E (Es) layers. It is widely accepted that Es layers are
C. Arras +4 more
semanticscholar +1 more source
Evaluation of Forward Models for GNSS Radio Occultation Data Processing and Assimilation [PDF]
Remote Sensing, 2022 In radio occultation (RO) data processing and data assimilation, the forward model (FM) is used to calculate bending angle (BA) from refractivity (N). The accuracy and precision of forward modeled BA are affected by refractivity profiles and FM methods, including Abel integral algorithms (direct, exp, exp_T, linear) and methods of interpolating ...
Nan Deng +13 more
openaire +2 more sources
Processing multiple GNSS RO data using FSI and ROPP: results from the ROMEX [PDF]
Atmospheric Measurement TechniquesGlobal Navigation Satellite System (GNSS) Radio Occultation (RO) is a vital technique in atmospheric remote sensing, providing all-weather, high-resolution vertical observations that support numerical weather prediction (NWP) and atmospheric research. To
Y. Chen +5 more
doaj +1 more source
Application of an optimal estimation inverse method to GPS/MET bending angle observations [PDF]
, 2001 Palmer et al. [2000] describes an optimal estimation inverse method for radio occultation (RO) bending angle measurements to retrieve simultaneously temperature, humidity, and surface pressure; outlines quality control procedures for retrieved profiles ...
Palmer, P. I., Barnett, J. J.
core +1 more source
Analysis of reflections in GNSS radio occultation measurements using the phase matching amplitude [PDF]
Atmospheric Measurement Techniques, 2018 It is well-known that in the presence of super-refractive layers in the lower-tropospheric inversion of GNSS radio occultation (RO) measurements using the Abel transform yields biased refractivity profiles. As such it is problematic to reconstruct the
T. Sievert +3 more
doaj +1 more source
GNSS performance modelling for high interrity aircraft applications [PDF]
, 2012 Till recently, no significant attempts have been made of developing Aircraft Based Augmentation System (ABAS) architectures capable of generating integrity signals suitable for safety-critical GNSS applications and no commercial ABAS products are ...
Shao, Liang
core +7 more sources
Global tropopause height determination using GNSS radio occultation
Egyptian Journal of Remote Sensing and Space Sciences, 2023 The tropopause layer is a crucial stratum of the earth's atmosphere that attracts more interest from climate and atmospheric researchers. The observables of the global navigation satellite system (GNSS) allow for continuous and long-term research of the ...
Mohamed Zhran, Ashraf Mousa
doaj +1 more source
Data intensive scientific analysis with grid computing [PDF]
, 2011 Data intensive scientific analysis with grid computing At the end of September 2009, a new Italian GPS receiver for radio occultation was launched from the Satish Dhawan Space Center (Sriharikota, India) on the Indian Remote Sensing OCEANSAT-2 ...
Riccardo Notarpietro +11 more
core +2 more sources