Accession Number:

AD0920376

Title:

Advanced Acoustic Sensor System Software

Descriptive Note:

Final rept.

Corporate Author:

BOEING CO SEATTLE WA

Personal Author(s):

• Scallon, Greg
• Cretin, Charles

Report Date:

1974-04-03

Pagination or Media Count:

97.0

Abstract:

As a result of acoustic sensor analyses, trade studies and evaluations completed during 1973, an acoustic sensor system concept was developed and components were selected, procured and installed in a Boeing ASW test airplane. The applications software, designed and programmed for operation in the Interdata Model 85 computer, controls data acquisition, processing and display. The nucleus of this software is the real-time program which controls data acquisition from the analog-to-digital converter, performs the Fast Fourier Transform, line integration and line tracking algorithms, and communicates with the operator through the Hazeltine 2000 CRTkeyboard and the electrographic recorder displays. In November 1973, an end-to-end test of the Acoustical Signal Processing and Analysis System ASPAS was run. The test employed an analog test tape, first with a sine wave with no acoustic noise, and then with a sine wave with noise added for approximately thirty minutes. The tests clearly demonstrated the capability of the ASPAS to detect and process signal-to-noise levels lower than -20 decibels.

Descriptors:

• *ACOUSTIC DETECTION
• *COMPUTER PROGRAMS
• *ANTISUBMARINE WARFARE
• AIRBORNE
• SONAR SOUND ANALYZERS
• ACOUSTIC SIGNATURES
• DOPPLER SYSTEMS
• SUBMARINE DETECTION
• TARGET CLASSIFICATION
• LOW FREQUENCY
• SONOBUOYS
• ANTISUBMARINE AIRCRAFT
• DATA PROCESSING EQUIPMENT
• DIRECTIONAL
• SUBMARINE NOISE
• REAL TIME
• SIGNAL PROCESSING
• FREQUENCY ANALYZERS
• ALGORITHMS

Subject Categories:

• Computer Programming and Software
• Computer Hardware
• Undersea and Antisubmarine Warfare
• Acoustic Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE