GNSS-R Altimetry Performance Analysis for the GEROS Experiment on Board the International Space Station
AbstractThe GEROS-ISS (GNSS rEflectometry, Radio Occultation and Scatterometry onboard International Space Station) is an innovative experiment for climate research, proposed in 2011 within a call of the European Space Agency (ESA). This proposal was the only one selected for further studies by ESA out of ~25 ones that were submitted. In this work, the instrument performance for the near-nadir altimetry (GNSS-R) mode is assessed, including the effects of multi-path in the ISS structure, the electromagnetic-bias, and the orbital height decay. In the absence of ionospheric scintillations, the altimetry rms error is <50 cm for a swath <~250 km and for U10 <10 m/s. If the transmitted power is 3 dB higher (likely to happen at beginning of life of the GNSS spacecrafts), mission requirements (rms error is <50 cm) are met for all ISS heights and for U10 up to 15 m/s. However, around 1.5 GHz, the ionosphere can induce significant fading, from 2 to >20 dB at equatorial regions, mainly after sunset, which will seriously degrade the altimetry and the scatterometry performances of the instrument. View Full-Text
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Camps, A.; Park, H.; Sekulic, I.; Rius, J.M. GNSS-R Altimetry Performance Analysis for the GEROS Experiment on Board the International Space Station. Sensors 2017, 17, 1583.
Camps A, Park H, Sekulic I, Rius JM. GNSS-R Altimetry Performance Analysis for the GEROS Experiment on Board the International Space Station. Sensors. 2017; 17(7):1583.Chicago/Turabian Style
Camps, Adriano; Park, Hyuk; Sekulic, Ivan; Rius, Juan M. 2017. "GNSS-R Altimetry Performance Analysis for the GEROS Experiment on Board the International Space Station." Sensors 17, no. 7: 1583.
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