A comparison of ocean wave-radar modulation transfer functions at different radar frequencies and polarizations determined from tower and aircraft measurements

Author

Alpers, Werner ; Schmidt, A. ; Schmidt, Anke ; Brüning, Claus

Author_Institution

Inst. of Oceanogr., Hamburg Univ., Germany

Volume

2

fYear

34881

fDate

10-14 Jul1995

Firstpage

1087

Abstract

For the inversion of SAR image spectra into ocean wave spectra the ocean wave-radar modulation transfer function (MTF) plays an important role for waves traveling in or near the range direction. MTFs can be measured from sea-based platforms or inferred from the comparison of measured and simulated SAR image spectra. The MTFs determined by the two experimental methods have comparable moduli, but different phases. Also they do not agree with the values derived from various modulation theories. A short summary of the present status is given and possible reasons for the observed discrepancies are discussed

Keywords

backscatter; electromagnetic wave scattering; ocean waves; oceanographic techniques; radar cross-sections; radar polarimetry; remote sensing; remote sensing by radar; synthetic aperture radar; SAR; backscatter; measurement technique; modulation theory; ocean wave; ocean wave spectra; polarization; radar modulation transfer function; radar polarimetry; radar remote sensing; radar scattering; range direction; sea surface; Aircraft; Doppler radar; Frequency; Ocean waves; Polarization; Radar antennas; Radar imaging; Radar measurements; Sea measurements; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium, 1995. IGARSS '95. 'Quantitative Remote Sensing for Science and Applications', International

Conference_Location

Firenze

Print_ISBN

0-7803-2567-2

Type

conf

DOI

10.1109/IGARSS.1995.521146

Filename

521146