GPS radio occultation with GRACE: Atmospheric profiling utilizing the zero difference technique
摘要
Radio occultation events recorded on 28-29 July 2004 by a GPS receiver aboard the GRACE-B satellite are analyzed. The stability of the receiver clock allows for the derivation of excess phase profiles using a zero difference technique, rendering the calibration procedure with concurrent observations of a reference GPS satellite obsolete. 101 refractivity profiles obtained by zero differencing and 96 profiles calculated with an improved single difference method are compared with co-located ECMWF meteorological analyses. Good agreement is found at altitudes between 5 and 30 km with an average fractional refractivity deviation below 1% and a standard deviation of 2-3%. Results from end-to-end simulations are consistent with these observations.
引用
@article{arxiv.physics/0409032,
title = {GPS radio occultation with GRACE: Atmospheric profiling utilizing the zero difference technique},
author = {G. Beyerle and T. Schmidt and G. Michalak and S. Heise and J. Wickert and Ch. Reigber},
journal= {arXiv preprint arXiv:physics/0409032},
year = {2015}
}
备注
17 pages, 4 figures