Results 261 to 270 of about 14,356 (303)

Turbulence retrievals from radio occultations

2013 US National Committee of URSI National Radio Science Meeting (USNC-URSI NRSM), 2013
Summary form only given. The COSMIC project has proven the utility of radio occultation (RO) in extraction of temperature profiles in the global atmosphere for application to numerical weather forecasting, with GPS satellites acting as the source of the occulted radio signals.
Lakshmi Kantha, Elliott Barlow, Penina Axelrad, David Hooper, Larry Cornman   +4 more
openaire   +1 more source

The ROSA radio occultation project

2012 6th ESA Workshop on Satellite Navigation Technologies (Navitec 2012) & European Workshop on GNSS Signals and Signal Processing, 2012
The experience gained from ROSA radio occultation instruments flying nowadays on three missions (OCEANSAT-2, SAC-D and MEGHATROPIQUE) is presented in this paper. Insights on different aspects of GNSS remote sensing like tropospheric sounding, ionospheric sounding are presented here, compared with state-of-the-art reference data (ECMWF, colocations ...
A. Zin, S. Zago, E. Mangolini, S. Landenna, L. Marradi, R. Notarpietro, S. Radicella, B. Nava, V. Catalano   +8 more
openaire   +1 more source

Theory of GNSS Radio Occultation

2013
In this chapter, a brief history of the radio occultation remote sensing technique is introduced. The physical principles of GNSS radio occultation (RO) technique are discussed, and the detailed GNSS RO processing steps are presented ...
Shuanggen Jin, Estel Cardellach, Feiqin Xie   +2 more
openaire   +1 more source

Radio Holographic Filtering of Noisy Radio Occultations

2006
We investigate algorithms for filtering noisy radio occultation data with atmospheric multipath behavior in order to improve the accuracy of the inversion based on canonical transform/full spectrum methods. The noise filtering procedure uses the compression of the signal spectrum by multiplying it with a reference signal, Fourier filtering of the ...
M. E. Gorbunov, K. B. Lauritsen
openaire   +1 more source

Radio occultation studies with Solar Corona Sounders

Space Science Reviews, 1995
Solar Corona Sounders (SCS), a mission designed to utilize the radio occultation technique for investigations of the inner heliosphere, was submitted to ESA in response to a call for new mission concepts. The SCS platforms are two small multifrequency transmitters placed at the “anti-Earth” position (superior solar conjunction) for continuous radio ...
M. Pätzold, F. M. Neubauer, M. K. Bird
openaire   +1 more source

Turbulence in deep radio occultations

Radio Science, 1981
We investigate here the effect of turbulence in the focal region of spherical or weakly oblate refracting bodies by establishing weak scattering results for the scintillation index and power spectrum. If the spacecraft is a distance r⊥ from the focus in the plane of the sky, we find that initial focusing alone yields an increase in scintillation index ...
openaire   +1 more source

Radio Occultation Web Page Development

This report was written at the completion of the 2025 CISESS Summer Internship Program.
Wang, Leo, Ma, Emily Xinran
openaire   +2 more sources

GRACE-FO Radio Occultation Data Processing

2022
<p>The major objective of the GRACE Follow On (GFO) mission with its two satellites GF1 and GF2 is to obtain precise global and high-resolution models for both the static and the time variable components of the Earth's gravity field. Additional goal is the continuation of the GPS radio occultation (RO) measurements from the predecessor ...
Torsten Schmidt, Patrick Schreiner, Jens Wickert, Byron A. Iijima, Chi O. Ao, Jeffrey Y. Tien, Thomas K. Meehan   +6 more
openaire   +1 more source

An Overview of Atmospheric Radio Occultation

Journal of Global Positioning Systems, 2002
Thomas P. Yunck, holds a bachelor's degree in electrical engineering from Princeton University and a Ph.D. in systems and information science from Yale University. Since 1978 he has been with the Jet Propulsion Laboratory, California Institute of Technology, where he currently manages the GPS Observatories Office. At JPL, Dr. Yunck has been involved in
openaire   +1 more source

An Overview on GNSS Radio Occultation

2010
An overview on GNSS Radio Occultation (GNSS-RO) technique and its application in geodesy and atmospheric research was presented at the Institute of Astronomical and Physical Geodesy (APMG), University of Bonn in Germany, on 13th July 2010.
openaire   +1 more source