By Topic

The impact of the ocean wave-radar modulation transfer function on the inversion of ERS-1 SAR image spectra into ocean wave spectra

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

1 Author(s)
Bruning, C. ; Inst. of Oceanogr., Hamburg Univ., Germany

Hasselmann's closed forward integral transform and its inversion includes, in addition to motion induced effects, the modulation of the normalized radar cross section (NRCS) due to long ocean waves. This modulation is described by a linear ocean wave-radar modulation transfer function (MTF). The authors compute the forward mapping integral by using a `theoretical' and a parameterized form of the MTF with variable moduli and phases. For range propagating waves the transformation of SAR image spectra into ocean wave spectra depends strongly on this MTF. Significant wave heights (Hs) derived from inverted wave spectra decrease by 15-20% when increasing the modulus of the MTF by a factor of 2. Furthermore, Hs increases up to 50% if a phase of 0° is used in the forward mapping integral instead of the most likely phase of the MTF which is 90

Published in:

Geoscience and Remote Sensing Symposium, 1994. IGARSS '94. Surface and Atmospheric Remote Sensing: Technologies, Data Analysis and Interpretation., International  (Volume:4 )

Date of Conference:

8-12 Aug 1994