Accession Number : ADD012642

Title :   Method for Sea Surface High Frequency Radar Cross-Section Estimation Using Doppler Spectral Properties.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Trizna,Dennis B

Report Date : 30 Dec 1986

Pagination or Media Count : 11

Abstract : A method for estimating the high frequency radar cross-section of the sea surface. A Doppler spectrum of the sea surface is obtained by correlating returns from the high frequency radar signals. Approach and recede Bragg spectral lines and a zero Doppler frequency continuum level are identified in the Doppler spectrum. The amplitude ratio rho between the Bragg spectral lines and an amplitude ratio zeta(m) between the maximum amplitude Bragg spectral line and the zero Doppler frequency continuum are measured from the Doppler spectrum. The radar cross-section is then determined from the ratios rho and zeta(m). In a further method embodiment, the estimated radar cross-sections of targets appearing in the Doppler spectrum. (Patents)

Descriptors :   *PATENTS, *RADAR CROSS SECTIONS, *DOPPLER RADAR, AMPLITUDE, RATIOS, SPECTRA, ESTIMATES, HIGH FREQUENCY, BRAGG ANGLE, SPECTRAL LINES, SPECTRA, OCEAN SURFACE, OVER THE HORIZON DETECTION, BACKSCATTERING, RADAR TARGETS

Subject Categories : Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE