Accession Number : AD0685634

Title :   NONCOHERENT DETECTION OF NONFLUCTUATING TARGETS IN CONTAMINATED-NORMAL CLUTTER,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON D C

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

Report Date : 21 MAR 1969

Pagination or Media Count : 14

Abstract : Measurements of sea clutter using high-resolution radar indicate that clutter cross-section returns do not follow a Rayleigh distribution. In the report, a contaminated-normal distribution is proposed and found to be a good description of some of the clutter data taken by the high-resolution radar. The report then develops the theory necessary for detecting constant signals in contaminated-normal clutter when N pulses are summed noncoherently. Curves are presented for the threshold values, normalized to the median clutter voltage, versus the probability of false alarm for N = 1, 3, 10, and 30 pulses. Finally, probability of detection curves are presented for the previous N's and for false alarm probabilities ranging from 10.01 to 10 to the minus 9th power. (Author)

Descriptors :   (*TARGET ACQUISITION, RADAR CLUTTER), RADAR, PROBABILITY, RADAR TARGETS, DETECTION, STATISTICAL FUNCTIONS, PROBABILITY DENSITY FUNCTIONS

Subject Categories : Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE