Inference of surface power spectra from inversion of multifrequency polarimetric radar data

Details Inference of surface power spectra from inversion of multifrequency polarimetric radar data Inference of surface power spectra from inversion of multifrequency polarimetric radar data

Sep 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991georl..18.1787v&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 18, Sept. 1991, p. 1787-1790.

Physics

14

Aerial Photography, Earth Surface, Polarimetry, Power Spectra, Radar Data, Radar Imagery, Airborne Equipment, California, Data Acquisition

Scientific paper

During the summer of 1988 an intensive field experiment was conducted in the vicinity of Pisgah lava field in the Mojave Desert. As part of the experiment, physical properties such as microtopography, composition, soil moisture, and dielectric constant at five different sites representing surfaces with rms heights varying from less than one centimeter to tens of centimeters were measured. In addition, polarimetric radar images at P-band, L-band and C-band were acquired at three different incidence angles with the NASA/JPL airborne imaging radar polarimeter. Using trihedral corner reflectors deployed in the area prior to imaging, the radar images were calibrated to provide values for each resolution element in each scene. This paper reports on the derivation of the power spectrum of surface microtopography by solution of the small perturbation model for multiple incidence angle and multiple frequency radar data. Power-law fits to the power spectra have exponents that are nearly the same for all surfaces. These values are close to those from measured microtopography profiles.

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