Two-dimensional synthetic aperture images over a land surface scene

Bayle, F.; Wigneron, Jean‐Pierre; Kerr, Yann H.; Waldteufel, Philippe; Anterrieu, Éric; Orlhac, J.-C.; Chanzy, André; Marloie, Olivier; Bernardini, Maurizio; Søbjærg, Sten Schmidl; Calvet, J.-C.; Goutoule, J.M.; Skou, N.

doi:10.1109/tgrs.2002.1000330

Cited by 21 publications

(7 citation statements)

References 9 publications

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“…By 1990, a small group had started work on the development of a similar instrument [64] quickly evolving into a 2-D concept [65]. The concept was named microwave imaging radiometer with aperture synthesis (MIRAS) and an airborne prototype was made and operated [66]. From then on, the concept evolved into a more tailored instrument under the name of the SMOS mission.…”

Section: A Smos Inceptionmentioning

confidence: 99%

The SMOS Mission: New Tool for Monitoring Key Elements ofthe Global Water Cycle

et al. 2010

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Section: A Smos Inceptionmentioning

confidence: 99%

The SMOS Mission: New Tool for Monitoring Key Elements ofthe Global Water Cycle

et al. 2010

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“…MIRAS is a bidimensional interferometric radiometer with a Y-shaped antenna structure (Bayle et al, 2002;Camps et al, 2005). The field of view (FOV) of MIRAS contains both the Earth and the sky.…”

Section: Smos Level 1c Tbmentioning

confidence: 99%

Errors in SMOS Sea Surface Salinity and their dependency on a priori wind speed

Yin

Boutin

Martin

et al. 2014

Remote Sensing of Environment

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International audienceThe wind speed (WS) provided by the European Centre for Medium-Range Weather Forecasts (ECMWF) is used to initialize the retrieval process of WS and Sea Surface Salinity (SSS) obtained by the Soil Moisture and Ocean Salinity (SMOS) mission. This process compensates for the lack of onboard instrument providing a measure of ocean surface WS independent of the L-band radiometer measurements. The SMOS-retrieved WS in the center of the swath (± 300 km) is adjusted regarding to its a priori estimate. The quality of the SMOS-retrieved SSS (SSSSMOS) is better at the center of the swath than at the edge of the swatch because the larger number of brightness temperature measurements available at the center of the swath reduces the effects of noise and because the greater variety of incidence angles provides more scope for adjusting the WS. This highlights the advantage of using a multi-parameter retrieval with respect to a SSS-only retrieval in which the WS would be entirely prescribed. Systematic inconsistencies between the atmospheric WS modeled using ECMWF and the WS sensed by radiometers are observed. These inconsistencies in the WS are reduced by the retrieval scheme but they still lead to residual biases in the SSSSMOS, especially in the eastern equatorial Pacific ocean if the ECMWF WS is used as an a priori estimate

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“…The first ever 2‐D interferometric image of a land surface was produced by traveling the MIRAS‐11 demonstrator over plowed and irrigated fields in Avignon in 1999. The image was poor [ Bayle et al ., ] but proved the concept (see Figure ).…”

Section: Interferometry At Cnesmentioning

confidence: 99%

“…From left to right: rough surface, smooth, rough with small water body at top, smooth and rough (refer to Bayle et al . []).…”

Section: Interferometry At Cnesmentioning

confidence: 99%

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Microwave interferometric radiometry in remote sensing: An invited historical review

et al. 2014

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The launch of the Soil Moisture and Ocean Salinity (SMOS) mission on 2 November 2009 marked a milestone in remote sensing for it was the first time a radiometer capable of acquiring wide field of view images at every single snapshot, a unique feature of the synthetic aperture technique, made it to space. The technology behind such an achievement was developed, thanks to the effort of a community of researchers and engineers in different groups around the world. It was only because of their joint work that SMOS finally became a reality. The fact that the European Space Agency, together with CNES (Centre National d'Etudes Spatiales) and CDTI (Centro para el Desarrollo Tecnológico e Industrial), managed to get the project through should be considered a merit and a reward for that entire community. This paper is an invited historical review that, within a very limited number of pages, tries to provide insight into some of the developments which, one way or another, are imprinted in the name of SMOS.

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Two-dimensional synthetic aperture images over a land surface scene

Cited by 21 publications

References 9 publications

The SMOS Mission: New Tool for Monitoring Key Elements ofthe Global Water Cycle

The SMOS Mission: New Tool for Monitoring Key Elements ofthe Global Water Cycle

Errors in SMOS Sea Surface Salinity and their dependency on a priori wind speed

Microwave interferometric radiometry in remote sensing: An invited historical review

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