Suppression of Log-Weibull Distributed Sea-Ice Clutter Using a Modified LOG/CFAR System

Autor:	Seishiro Ishii, Matsuo Sekine, Shuji Sayama
Rok vydání:	2006
Předmět:	law.invention Constant false alarm rate Beamwidth Amplitude law Range (statistics) Clutter Electrical and Electronic Engineering Akaike information criterion Radar Algorithm Remote sensing Weibull distribution Mathematics
Zdroj:	IEEJ Transactions on Fundamentals and Materials. 126:431-437
ISSN:	1347-5533 0385-4205
DOI:	10.1541/ieejfms.126.431
Popis:	We observed sea-ice clutter using a millimeter wave radar with a frequency 34.860 GHz, a beamwidth 0.25°, and a plusewidth 30 ns which is located at the city of Mombetsu in Hokkaido. To determine the sea-ice clutter amplitude, we introduce the Akaike Information Criterion (AIC). It is discovered that the sea-ice clutter amplitudes obey the log-Weibull distribution with the shape parameters of 2.36 to 2.93 in terms of the temporal and small scale range fluctuations with which a constant false alarm rate (CFAR) is concerned. We propose a new log-Weibull/CFAR system uses a modified cell-averaging LOG/CFAR system. It is found that sea-ice clutter is suppressed with the improvement of more than 40 dB.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::14dfd1833183440fd1fb557555468b52 https://doi.org/10.1541/ieejfms.126.431 Zobrazit plný text záznamu