Spaceborne X-band synthetic aperture radars (SARs) represent a well-established tool for Earth remote sensing at very high spatial resolution (order of meters). Until now, SAR has not been exploited for hydrological cycle modelling and numerical weather forecast, however, there are scientific evidences that at X band and beyond: i) atmospheric precipitation in liquid and ice phase affect SAR imagery and its intensity can be retrieved, ii) snow areal extent and mass (water-equivalent) can be detected and estimated. KydroSAT mission concept foresees a miniaturised fully-digital SAR at Ku and Ka band (KydroSAR), specifically devoted to detecting and estimating atmospheric precipitation and surface snow; its baseline includes dual-polarization capability, high orbit duty cycle (>75%), flexible ground resolution (5-150 m), and a large variable swath (50-150 km), doubled with formation of two minisatellites both carrying a KydroSAR. Moreover, the mission concept foresees the along-track convoy with the COSMO-SkyMed and SAOCOM SAR platforms, allowing the observation of the same scene at L, X, Ku and Ka bands. The challenging requirements of this architecture require the development of new technologies such as Digital Beam Forming and Direct Digital to RF Conversion. In order to exploit the synergic approach of the KydroSAT convoy for precipitation, in this work we will simulate and discuss the SAR response at X, Ku and Ka bands of the same scene, using the SAR forward model described in Mori et al. (2017). Subsequently, an example retrieval of Snow Equivalent Water (SWE) by Ku-SAR will be given.

KydroSAT: a Ku/Ka band synthetic aperture radar space mission concept for high-resolution mapping of hydrometeorological parameters / Giancristoforo, Domenico; Marzano, FRANK SILVIO; Mori, Saverio; Poghosyan, Armen; Giudici, Davide; Lemmetyinem, Juha; Pierdicca, Nazzareno; Macelloni, Giovanni; Bombaci, Ornella. - ELETTRONICO. - 10426:(2017), pp. 1-17. (Intervento presentato al convegno SPIE Remote Sensing conference - Active and Passive Microwave Remote Sensing for Environmental Monitoring tenutosi a Warsaw; Poland nel 11 - 14 September) [10.1117/12.2277993].

KydroSAT: a Ku/Ka band synthetic aperture radar space mission concept for high-resolution mapping of hydrometeorological parameters

MARZANO, FRANK SILVIO;MORI, SAVERIO;PIERDICCA, Nazzareno;
2017

Abstract

Spaceborne X-band synthetic aperture radars (SARs) represent a well-established tool for Earth remote sensing at very high spatial resolution (order of meters). Until now, SAR has not been exploited for hydrological cycle modelling and numerical weather forecast, however, there are scientific evidences that at X band and beyond: i) atmospheric precipitation in liquid and ice phase affect SAR imagery and its intensity can be retrieved, ii) snow areal extent and mass (water-equivalent) can be detected and estimated. KydroSAT mission concept foresees a miniaturised fully-digital SAR at Ku and Ka band (KydroSAR), specifically devoted to detecting and estimating atmospheric precipitation and surface snow; its baseline includes dual-polarization capability, high orbit duty cycle (>75%), flexible ground resolution (5-150 m), and a large variable swath (50-150 km), doubled with formation of two minisatellites both carrying a KydroSAR. Moreover, the mission concept foresees the along-track convoy with the COSMO-SkyMed and SAOCOM SAR platforms, allowing the observation of the same scene at L, X, Ku and Ka bands. The challenging requirements of this architecture require the development of new technologies such as Digital Beam Forming and Direct Digital to RF Conversion. In order to exploit the synergic approach of the KydroSAT convoy for precipitation, in this work we will simulate and discuss the SAR response at X, Ku and Ka bands of the same scene, using the SAR forward model described in Mori et al. (2017). Subsequently, an example retrieval of Snow Equivalent Water (SWE) by Ku-SAR will be given.
2017
SPIE Remote Sensing conference - Active and Passive Microwave Remote Sensing for Environmental Monitoring
synthetic aperture radar (SAR); hydrological SAR; satellite mission concept; precipitation detection and estimation; snow areal extent monitoring; snow mass (water equivalent) monitoring; L- X- Ku- and Ka- bands
04 Pubblicazione in atti di convegno::04b Atto di convegno in volume
KydroSAT: a Ku/Ka band synthetic aperture radar space mission concept for high-resolution mapping of hydrometeorological parameters / Giancristoforo, Domenico; Marzano, FRANK SILVIO; Mori, Saverio; Poghosyan, Armen; Giudici, Davide; Lemmetyinem, Juha; Pierdicca, Nazzareno; Macelloni, Giovanni; Bombaci, Ornella. - ELETTRONICO. - 10426:(2017), pp. 1-17. (Intervento presentato al convegno SPIE Remote Sensing conference - Active and Passive Microwave Remote Sensing for Environmental Monitoring tenutosi a Warsaw; Poland nel 11 - 14 September) [10.1117/12.2277993].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1008876
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