Multi-frequency, multi-polarization SAR and radiometer sea ice classificationMicrowave remotely sensed data were acquired simultaneously in March 1988 over Beaufort, Chukchi, and Bering Sea ice using the JPL multifrequency, polarimetric synthetic aperture radar (SAR), and multifrequency dual-polarization GSFC radiometer. The experiment was conducted as a series of coordinated underflights of the DMSP SSM/I satellite radiometer to validate ice products derived from its radiance values. Concurrent flights by an NRL P-3 aircraft enabled overlapping high-resolution, single-frequency images to be acquired over the same surfaces using a Ka-band scanning microwave radiometer. Precise coregistration to an accuracy of 100 m, +/- 25 m enables comparison of temporally and spatially coincident active and passive microwave datasets. Three-channel polarimetric SAR data are compared with dual-polarized radiometer data at several SSM/I frequencies, showing backscatter signatures to be highly correlated with radiometric temperatures. Further comparisons are used to evaluate ice concentration retrievals and to show how multiparameter datasets can be used to resolve ambiguities present in identifying certain sea ice forms with a single microwave instrument.
Document ID
19920052250
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Drinkwater, Mark R. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Crawford, John P. (JPL Pasadena, CA, United States)
Cavalieri, Donald J. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1991
Subject Category
Oceanography
Meeting Information
Meeting: IGARSS ''91: Annual International Geoscience and Remote Sensing Symposium