ADI'DAS Radar Image Preview Database
Oceanic phenomena / Oceanic fronts

Image Preview

Image name sirclcx9404171621
Platform/Sensor SIR-C / X-SAR 
Flight altitude/speed 225 km / 7.8 km/s
Image partition 7 fragments: L-VV, L-HH, L-HV, C-VV, C-HH, C-HV, X-VV
Wavelength(s)/Frequency(ies)/Band(s) L band: 1.25 GHz / 0.24 m; C band: 5.30 GHz / 0.057 m; X band: 9.60 GHz / 0.031 m
Polarization(s) L and C band: VV, HH, HV; X band: VV
Incidence angle(s) L and C band: 32.0° X band: 30.6°
Calibration Preview images:linear power, gray scale individually optimized for each channel
Full images: calibrated absolute NRCS
Date/Time April 17, 1994/16:21
Area Gulf Stream front (U.S. east coast), data take 134.05
Coordinates Image center: L and C band: 36°38.4' N 73°36.8' W; X band: 36°43' N 73°47' W
Track direction at image center: L and C band: 140.8°; X band: 140.4°
Surface geometry L and C band: 19.450km*99.925km; X band: 40.300km*102.500km
Location map Not available
Other signatures seen in the image Atmospheric convective cells, atmospheric front

Supplementary information:

currents, winds, temperatures along a ship track

Source image:
image size: L and C band:1556*7994; X band: 3224*8200; pixel size: 12.5m*12.5m
file size: L and C band: 48 MB per frequency and polarization; X band: 101 MB (assuming 4 byte float array, full resolution);
contact: Roland Romeiser,  romeiser@ifm.uni-hamburg.de     Susanne Ufermann, s.ufermann@soton.ac.uk

References:
Chubb, S.R., T. Donato, F. Askari, R. Romeiser, S. Ufermann, A.L. Cooper, W. Alpers, S.A. Mango, J.S. Lee, Study of Gulf Stream features with a multi-frequency polarimetric SAR from the Space Shuttle, IEEE Trans. on Geosci. and Remote Sensing, 37, 2495-2507, 1999.
Ufermann, S., M. Gade, R. Romeiser, and W. Alpers, On the impact of lower atmospheric stratification on SAR images of the ocean surface, in Proc. 18th EARSeL Symposium, pp. 261-265, A.A. Balkema, Rotterdam / Brookfield, 1998.
Ufermann, S., R. Romeiser, and M. Gade, On the radar signatures of oceanic fronts – analysis of multi-channel radar imagery and model predictions, in Proc. International Geoscience and Remote Sensing Symposium (IGARSS '98), pp. 1659-1661, Inst. of Elec. and Electron. Eng., Piscataway, N.J., USA, 1998.
Ufermann, S., R. Romeiser, and M. Gade, On radar signatures of atmospheric and oceanic phenomena, in Proc. International Geoscience and Remote Sensing Symposium (IGARSS '99), pp. 1963-1965, Inst. of Elec. and Electron. Eng., Piscataway, N.J., USA, 1999.
Ufermann, S., and R. Romeiser, A new interpretation of multifrequency / multipolarization radar signatures of the Gulf Stream front, J. Geophys. Res., 104, 25,697-25,706, 1999.
Ufermann, S., and R. Romeiser, Numerical study on signatures of atmospheric convective cells in radar images of the ocean, J. Geophys. Res., 104, 25,707-25,720, 1999.
 
 

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