A laboratory investigation of electromagnetic bias in sea level measurements by microwave altimetersTo contribute to a better understanding of the electromagnetic bias in radar altimetry, a series of experiments was conducted using a focused beam radar set at 13.5-GHz frequency. For pure wind wave fields, the authors found the bias to be a quadratic function of each of the commonly used parameters, namely, the significant wave height, the wind speed, the water elevation skewness, and significant slope. The bias divided by the significant wave height is a linear function of these parameters. The coefficients in bias representation as a function of either the significant wave height or the wind speed are significantly different from values obtained in field experiments. This led to the conclusion that none of the latter parameters can be taken solely to account for all observed bias variations. Instead, dimensionless parameters such as the wave skewness or a dimensionless wave height are shown to be more appropriate.
Document ID
19920052328
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Branger, H. (Institut de Mecanique Statistique de la Turbulence Marseille, France)
Bliven, L. (NASA Wallops Flight Center Wallops Island, VA, United States)
Ramamonjiarisoa, A. (Institut de Mecanique Statistique de la Turbulence Marseille, France)
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