Accession Number : AD0704467

Title :   DETECTION RESULTS FOR FLUCTUATING TARGETS.

Descriptive Note : Interim rept.,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON D C

Personal Author(s) : Trunk,G. V.

Report Date : 24 FEB 1970

Pagination or Media Count : 17

Abstract : Sea-clutter measurements using high-resolution radar indicate that clutter cross-section returns do not usually follow a Rayleigh distribution. The log-normal and contaminated-normal descriptions of sea clutter have been considered; and detection curves for nonfluctuating targets and for these distributions have been generated for the mean, median, and trimmed-mean detectors. In this report the detection calculations are repeated for fluctuating targets, specifically Swerling II and IV fluctuations. For the log-normal distribution, the trimmed-mean is the most effective detector; and the median is slightly better than the mean. For the contaminated-normal distribution, the mean is slightly better than the trimmed-mean, which is better than the median. (Author)

Descriptors :   (*RADAR TARGETS, DETECTION), (*RADAR CLUTTER, OCEAN WAVES), RADAR CROSS SECTIONS, DISTRIBUTION FUNCTIONS, PROBABILITY

Subject Categories : Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE