Comparison of Ocean Currents Derived From Dispersive Shifts in SAR Subaperture Image Sequences to ATI-SAR Surface Velocities
| Autor: | Mark A. Sletten, Andrei Abelev, Robert T. Liang, Steven Menk |
|---|---|
| Rok vydání: | 2022 |
| Předmět: |
Synthetic aperture radar
fungi Ocean current Front (oceanography) Mode (statistics) Geotechnical Engineering and Engineering Geology Gulf Stream Interferometry Ultra high frequency Electrical and Electronic Engineering skin and connective tissue diseases Dispersion (water waves) Geology Remote sensing |
| Zdroj: | IEEE Geoscience and Remote Sensing Letters. 19:1-5 |
| ISSN: | 1558-0571 1545-598X |
| Popis: | We report the initial results of an experimental investigation into the measurement of ocean surface currents with an ultrahigh frequency synthetic aperture radar (UHF SAR) that supports an along-track interferometric (ATI) mode. We compare results from two different approaches to the current measurement: analysis of wave dispersion in a time-sequence of subaperture images and standard ATI-SAR processing. We find that while both methods clearly show a surface velocity front over the north wall of the Gulf Stream, the change in velocity indicated by the dispersion method is significantly less than that indicated by ATI-SAR processing. We offer methodological and geophysical reasons for the observed differences. |
| Databáze: | OpenAIRE |
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