Articles | Volume 11, issue 2
Atmos. Meas. Tech., 11, 819–833, 2018

Special issue: Observing Atmosphere and Climate with Occultation Techniques...

Atmos. Meas. Tech., 11, 819–833, 2018

Research article 13 Feb 2018

Research article | 13 Feb 2018

Evaluation of atmospheric profiles derived from single- and zero-difference excess phase processing of BeiDou radio occultation data from the FY-3C GNOS mission

Weihua Bai et al.

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Cited articles

Anthes, R. A.: Exploring Earth's atmosphere with radio occultation: contributions to weather, climate and space weather, Atmos. Meas. Tech., 4, 1077–1103,, 2011. 
Anthes, R. A., Rocken, C., and Kuo, Y.-H.: Applications of COSMIC to meteorology and climate, Terr. Atmos. Ocean. Sci., 11, 115–156, 2000. 
Aparicio, J. and Deblonde, G.: Impact of the assimilation of CHAMP refractivity profiles in Environment Canada global forecasts, Mon. Weather Rev., 136, 257–275, 2008. 
Ashby, N.: Relativity in the Global Positioning System, Living Rev. Relativ., 6, 1,, 2003. 
Short summary
In this study we focus on evaluating zero-difference processing of BDS RO data vs. single-difference processing. From the statistics, average bias (and standard deviation) of the bending angle and refractivity profiles were found to be as small as about 0.05–0.2 % (and 0.7–1.6 %) over the upper troposphere and lower stratosphere, including for the GEO, IGSO, and MEO subsets. Zero differencing was found to perform slightly better, as may be expected from its lower vulnerability to noise.