Signal: SAR for ice, glacier and global dynamics

Börner, Thomas; Zan, Francesco De; López-Dekker, Paco; Krieger, Gerhard; Hajnsek, Irena; Papathanassiou, Kostas; Villano, Michelangelo; Younis, Marwan; Danklmayer, Andreas; Dierking, Wolfgang; Nägler, Thomas; Rott, Helmut; Lehner, Susanne; Fügen, T.; Moreira, Alberto

doi:10.1109/igarss.2010.5653162

Cited by 15 publications

(20 citation statements)

References 3 publications

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“…Besides the TanDEM-X mission, satellite configurations operated at other frequency bands are taken into account: (a) Tandem-L ; (b) a C-band tandem with wavelength and orbit altitude of Sentinel-1 (Torres et al, 2012) considering the possibility of adding a passive companion satellite for interferometric measurements; (c) a K uband tandem based on a concept presented by Lopez-Dekker et al (2014) for a single platform meant for measuring ocean currents; and (d) a scenario for K a band that is adopted from a proposal for an ESA Earth Explorer mission (Börner et al, 2010).…”

Section: Resultsmentioning

confidence: 99%

Sea ice local surface topography from single-pass satellite InSAR measurements: a feasibility study

2017

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Abstract. Quantitative parameters characterizing the sea ice surface topography are needed in geophysical investigations such as studies on atmosphere-ice interactions or sea ice mechanics. Recently, the use of space-borne single-pass interferometric synthetic aperture radar (InSAR) for retrieving the ice surface topography has attracted notice among geophysicists. In this paper the potential of InSAR measurements is examined for several satellite configurations and radar frequencies, considering statistics of heights and widths of ice ridges as well as possible magnitudes of ice drift. It is shown that, theoretically, surface height variations can be retrieved with relative errors ≤ 0.5 m. In practice, however, the sea ice drift and open water leads may contribute significantly to the measured interferometric phase. Another essential factor is the dependence of the achievable interferometric baseline on the satellite orbit configurations. Possibilities to assess the influence of different factors on the measurement accuracy are demonstrated: signal-to-noise ratio, presence of a snow layer, and the penetration depth into the ice. Practical examples of sea surface height retrievals from bistatic SAR images collected during the TanDEM-X Science Phase are presented.

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Section: Resultsmentioning

confidence: 99%

Sea ice local surface topography from single-pass satellite InSAR measurements: a feasibility study

2017

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Section: Resultsmentioning

confidence: 99%

“…In the derivation a non-weighted, ideal radar transfer function is used (Weber Hoen and Zebker, 2000). Based on the study by Dall (2007), we modified Eq. (11).…”

Section: Volume Decorrelationmentioning

confidence: 99%

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Manuscript with marked changes

Dierking¹

2017

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Quantitative parameters characterizing the sea ice surface topography are needed in geophysical investigations such as studies on atmosphere-ice interactions or sea ice mechanics. Recently, the use of space-borne single-pass interferometric synthetic aperture radar (InSAR) for retrieving the ice surface topography has attracted notice among geophysicists. In this paper the potential of InSAR measurements is examined for several satellite configurations and radar frequencies, considering statistics of heights and widths of ice ridges as well as possible magnitudes of ice drift. It is shown that, theoretically, surface height variations can be retrieved with relative errors ≤ 0.5 m. In practice, however, the sea ice drift and open water leads may contribute significantly to the measured interferometric phase. Another essential factor is the dependence of the achievable interferometric baseline on the satellite orbit configurations. Possibilities to assess the influence of different factors on the measurement accuracy are demonstrated: signal-to-noise ratio, presence of a snow layer, and the penetration depth into the ice. Practical examples of sea surface height retrievals from bistatic SAR images collected during the TanDEM-X Science Phase are presented.

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“…To address this scientific needs, recently an international team of scientist lead by the German Aerospace Center (DLR) has proposed a Ka-band single-pass interferometric mission concept named SIGNAL (SAR for Ice, Glacier and oceaN globAL Dynamics) [2]. A formation flying constellation of two compact satellites was proposed as the only way to obtain the desired cross-track baseline.…”

Section: Introductionmentioning

confidence: 99%