A Simple Model for Marine Radar Images of the Ocean Surface

Autor:	David R. Lyzenga, David T. Walker
Rok vydání:	2015
Předmět:	Pulse-Doppler radar Geotechnical Engineering and Engineering Geology Geodesy law.invention Continuous-wave radar Bistatic radar law Radar imaging 3D radar Electrical and Electronic Engineering Radar Low-frequency radar Radar horizon Physics::Atmospheric and Oceanic Physics Geology Remote sensing
Zdroj:	IEEE Geoscience and Remote Sensing Letters. 12:2389-2392
ISSN:	1558-0571 1545-598X
DOI:	10.1109/lgrs.2015.2478390
Popis:	This letter describes a simple model for the backscattered signal received from the ocean surface by a horizontal-polarization marine radar operating at low grazing angles, including the effects of the logarithmic amplifiers conventionally used in these radars. Shadowing is accounted for via geometric optics. The range dependence of the mean radar signal predicted by this model compares well with that observed in two marine radar data sets collected under different environmental conditions. The model also indicates that the radar signal modulation (the deviation from the mean normalized by the mean) is proportional to the radial component of the surface slope in unshadowed regions. This suggests the possibility of direct quantitative wave observations using marine radar modulation data, without the need for calibration.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::df24139759eaf9fcf1344735a2296226 https://doi.org/10.1109/lgrs.2015.2478390 Zobrazit plný text záznamu