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Title:
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GEROS-ISS, a demonstration mission of GNSS remote sensing capabilities to derive geophysical parameters of the earth surfaces: performance evaluation
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Author:
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Camps Carmona, Adriano José; Hyuk, Park; Ghavidel, Ali; Rius Casals, Juan Manuel; Sekulic, Ivan
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Other authors:
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Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. RSLAB - Grup de Recerca en Teledetecció; Universitat Politècnica de Catalunya. CTE-CRAE - Grup de Recerca en Ciències i Tecnologies de l'Espai; Universitat Politècnica de Catalunya. ANTENNALAB - Grup d'Antenes i Sistemes Radio |
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Abstract:
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The GNSS rEflectometry, Radio Occultation and Scatterometry onboard International Space Station (GEROS-ISS) is an innovative experiment for climate research, proposed in 2011 within a call of the European Space Agency (ESA) for installation at the ISS. This international proposal was the only one selected for further studies by ESA out of ~25 submitted ones. In this work, the assessment of 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 spacecraft), mission requirements (rms error is <; 50 cm) are met for all ISS heights and 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. |
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Abstract:
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Peer Reviewed |
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Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Teledetecció
-Remote sensing
-Altitudes -- Measurement
-GNSS-R
-Altimetry
-Error budget
-Ionosphere
-Scintillations
-Teledetecció
-Altituds -- Mesurament |
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Rights:
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Document type:
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Article - Published version
Conference Object |
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Published by:
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Institute of Electrical and Electronics Engineers (IEEE)
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