Accession Number:

ADA066666

Title:

A Study of the Decrease in False Alarm Probability Resulting from an Increase in the Number of Displayed Echo Ranging Cycles.

Descriptive Note:

Technical note,

Corporate Author:

TRACOR INC AUSTIN TEX

Personal Author(s):

• Montgomery,Mickey B.

Report Date:

1966-08-19

Pagination or Media Count:

24.0

Abstract:

The reduction in false alarm probability PFA as the number of displayed echo cycles n is increased from 6 to 12 is investigated. According to a predetermined experimental curve, the value of SN is reduced with increasing n in such a manner as to maintain a constant detection probability, PC. Decreases in PFA as great as 0.19 were observed. To obtain a minimum PFA while retaining constant PC, a greater number of echo cycles are required for the initially smaller values of SN for n 6. Author

Descriptors:

• *FALSE ALARMS
• *SONAR TARGETS
• SIGNAL PROCESSING
• TARGET RECOGNITION
• PROBABILITY
• SIGNAL TO NOISE RATIO
• DISPLAY SYSTEMS
• REDUCTION
• STATISTICAL DISTRIBUTIONS
• ECHO RANGING
• SCANNING SONAR
• CYCLIC RATE
• SONAR PERSONNEL

Subject Categories:

• Acoustic Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE