Work

An improved model for the dielectric constant of sea water at microwave frequencies

Year: 1977

Type: article

Abstract: The advent of precision microwave radiometry has placed a stringent requirement on the accuracy with which the dielectric constant of sea water must be known. To this end, measurements of the dielectric constant have been conducted atS-band andL-band with a quoted uncertainty of tenths of a percent. These and earlier results are critically examined, and expressions are developed which will yield computations of brightness temperature having an error of no more than 0.3 K for an undisturbed sea at frequencies lower thanX-band. At the higher microwave and millimeter wave frequencies, the accuracy is in question because of uncertainties in the relaxation time and the dielectric constant at infinite frequency.

Source: IEEE Transactions on Antennas and Propagation

DOI: 10.1109/tap.1977.1141539

Authors: L. Klein, C. Swift

Institutions: Langley Research Center, George Washington University

Language: English

Topic: Microwave and Dielectric Measurement Techniques

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

Funder: National Aeronautics and Space Administration

OpenAlex ID: W2165827997

FWCI: 5.908

Cites: 17

Cited by: 909

Related to: 10