Radio Occultation
Generation of a bending angle radio occultation climatology (BAROCLIM) and its use in radio occultation retrievals
... angle radio occultation climatology (BAROCLIM) based on Formosat- 3/COSMIC (F3C) ...from radio occultation (RO) measurements are obtained from the accumulation of the change in the ray- path ...
16
Initial performance of the radio occultation experiment in the Venus orbiter mission Akatsuki
... the radio occultation experiment, termed RS (Radio Science), obtained 19 vertical profiles of the Venusian atmosphere by April ...previous radio occultation experiments using polar ...
11
A modification to the standard ionospheric correction method used in GPS radio occultation
... Steiner, A. K., Hunt, D., Ho, S.-P., Kirchengast, G., Mannucci, A. J., Scherllin-Pirscher, B., Gleisner, H., von Engeln, A., Schmidt, T., Ao, C., Leroy, S. S., Kursinski, E. R., Foelsche, U., Gor- bunov, M., Heise, S., ...
9
Radio occultation experiment of the Venus atmosphere and ionosphere with the Venus orbiter Akatsuki
... Sun, radio waves trans- mitted from the spacecraft toward the tracking station suffer bending, scattering and attenuation in the near-sun ...previous occultation results (Woo and Armstrong, 1979), we expect ...
9
Sporadic signatures revealed from multi-satellite radio occultation measurements
... This paper intends to give an overview on the multi- satellite radio occultation high-rate data base which can be used to monitor, beside neutral atmospheric behavior, also lower ionospheric ...
6
Reducing representativeness and sampling errors in radio occultation–radiosonde comparisons
... Radio occultation (RO), a relatively new method of atmo- spheric measurement, has established itself as an important atmospheric observational ...of radio waves sent from Global Positioning System ...
16
Radio occultation bending angle anomalies during tropical cyclones
... in radio occultation profiles in the tropical tropopause ...GPS radio occultation mis- sions (COSMIC, GRACE, CHAMP, SACC and GPSMET), we selected 1194 profiles in a time window of 3 h and a ...
8
Processing and validation of refractivity from GRAS radio occultation data
... Radio occultation (RO) uses the radio signals continuously transmitted by the GPS satellites to measure the phase change as the radio signal path skirts the Earth’s atmosphere on its way from ...
7
The impact of large scale ionospheric structure on radio occultation retrievals
... Abstract. We study the impact of large-scale ionospheric structure on the accuracy of radio occultation (RO) retrievals. We use a climatological model of the ionosphere as well as an ionospheric data ...
14
A simplified approach for generating GNSS radio occultation refractivity climatologies
... GPS radio occultation data for climate monitoring: Profile-to-profile intercomparison of CHAMP cli- mate records from 2002 to 2008 from six data centers, ...
9
Application of the locality principle to radio occultation studies of the Earth’s atmosphere and ionosphere
... the radio occultation (RO) remote sensing of the atmospheres and ionospheres of the Earth and other ...the radio waves passing through a layered medium are connected with influence of the vicinities ...
15
Exploring Earth’s atmosphere with radio occultation: contributions to weather, climate and space weather
... constellations are being planned or considered, e.g. CI- CERO (Community Initiative for Continuing Earth Radio Occultation, http://geooptics.com/?page id=58) and Iridium Next ...
27
Global Ionosonde and GPS Radio Occultation Sporadic-E Intensity and Height Comparison
... The Abel transform is an inversion technique that can be applied to TEC pro- files to obtain an electron density as a function of altitude (Ahmad, 1998; Hajj and Romans, 1998; Schriener et al., 1999). Previous studies ...
87
Estimation and evaluation of COSMIC radio occultation excess phase using undifferenced measurements
... GPS radio occultation technique, the at- mospheric excess phase (AEP) can be used to derive the refractivity, which is an important quantity in numerical weather ...using Radio Occulta- tion ...
9
Analysis of reflections in GNSS radio occultation measurements using the phase matching amplitude
... GNSS radio occultation (RO) measurements using the Abel trans- form yields biased refractivity ...flections, radio holographic images are ...of radio occultation measurements in the ...
12
Improved model for correcting the ionospheric impact on bending angle in radio occultation measurements
... Steiner, A. K., Hunt, D., Ho, S.-P., Kirchengast, G., Mannucci, A. J., Scherllin-Pirscher, B., Gleisner, H., von Engeln, A., Schmidt, T., Ao, C., Leroy, S. S., Kursinski, E. R., Foelsche, U., Gorbunov, M., Heise, S., ...
12
Empirical analysis and modeling of errors of atmospheric profiles from GPS radio occultation
... Abstract. The utilization of radio occultation (RO) data in atmospheric studies requires precise knowledge of error characteristics. We present results of an empirical error anal- ysis of GPS RO bending ...
16
Information content in reflected signals during GPS Radio Occultation observations
... The profiles analysed here are obtained from the Constel- lation Observing System for Ionosphere and Climate (COS- MIC) mission (Anthes et al., 2000), which maintain a good signal to noise ratio at low altitude. Data ...
18
Identification and localization of layers in the ionosphere using the eikonal and amplitude of radio occultation signals
... (CHAMP) radio occultation (RO) data, a description of dif- ferent types of the ionospheric impacts on the RO signals at the altitudes 30–90 km of the RO ray perigee is given and compared with the results of ...
16
Assessment of COSMIC radio occultation retrieval product using global radiosonde data
... However, radiosonde itself suffers from measurement bias, such as radiation errors in temperature measurements and various errors in humidity (Luers and Eskridge, 1998; Wang et al., 2003; Wang and Zhang, 2008; ...
11