Accession Number : AD0371817

Title :   HUMAN FACTOR PROBLEMS IN ANTI-SUBMARINE WARFARE. A PRELIMINARY ANALYSIS OF TARGET CLASSIFICATION INFORMATION OBTAINED FROM THE AN/AQS-10 AIRBORNE SONAR SYSTEM.

Descriptive Note : Technical rept.,

Corporate Author : HUMAN FACTORS RESEARCH INC SANTA BARBARA CALIF

Personal Author(s) : Gavin ,Raymond A. ; Seltzer,Merlyn L.

Report Date : APR 1966

Pagination or Media Count : 30

Abstract : Motion picture photography of representative submarine and nonsubmarine target pips on the PPI scope, and synchronous recording of the audio signals were used to investigate the information displayed by the AN/AQS-10 sonar system for target classification. It was found that the PPI display provides unreliable indications of target shape and orientation under most operating conditions. The PPI information is further degraded by operational problems associated with the range and bearing cursor, the expanded sweep mode, and the dependence of the keying cycle on range scale in use. The audio display provides discriminable doppler, given target speed components (in the sound beam) as low as 2 kts, although its perception is made somewhat difficult by the chordal quality of the audio. Recommendations for improvement of the system are made with particular emphasis on display techniques that would enhance the determinability of target motion. The development of training films from the target data recordings is recommended.

Descriptors :   (*SONAR TARGETS, CLASSIFICATION), HUMAN FACTORS ENGINEERING (U) MOTION PICTURE PHOTOGRAPHY, UNDERWATER SOUND SIGNALS, PLAN POSITION INDICATORS, DOPPLER EFFECT, TARGET DISCRIMINATION, VELOCITY, MOTION, ECHO RANGING, SCANNING SONAR, ANTISUBMARINE WARFARE, DISPLAY SYSTEMS, ACOUSTIC EQUIPMENT, AIRBORNE, HELICOPTERS, UNDERWATER OBJECTS, SONAR PULSES

Subject Categories : Undersea and Antisubmarine Warfare
      Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE