Experimental Validation of GNSS Interferometric Radio Occultation
2019
Ribó, Serni | Li, Weiqiang | Cardellach, Estel | Fabra, Fran | Padullés, Ramon | Rius, Antonio | Martín-Neira, Manuel
In this work, we present experimental results on the interferometric radio occultation (iRO) signal processing techniques, and compare the performance to the closed-loop and open-loop processing used in conventional radio occultation measurements. We also discuss the effects of antenna beam width to mitigate inter-satellite interferences, as well as how the local oscillator stability affects the obtained Doppler estimates. The required signal processing resources are less stringent for the iRO than for conventional RO techniques. In addition, the zenith iRO has a comparable performance to the well-established RO techniques.
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