Accession Number : ADA296518

Title :   Remote Netted Acoustic Detection System: Final Report.

Descriptive Note : Final rept. Feb 92-Sep 94,

Corporate Author : ARMY RESEARCH LAB ADELPHI MD

Personal Author(s) : Srour, Nassy ; Robertson, James

PDF Url : ADA296518

Report Date : MAY 1995

Pagination or Media Count : 44

Abstract : A Remote Netted Acoustic Detection System (RNADS) has been developed at the U.S. Army Research Laboratory for the detection of ground and air targets in a typical battlefield environment. The system involves non-line-of-sight (NLOS), real time x-y coordinate tracking, detection, and classification of targets at tactical ranges. The acoustic detection system includes a set of microphone arrays, surveyed a few kilometers apart and networked together through a radio link. Each microphone array is connected to a signal processing box that determines the line of bearing (LOB), frequency, time, signal to noise ratio (SNR), and classification of detected targets. The data from each sensor array are transmitted to a central processing station, where a multiple hypothesis tracking (MHT) algorithm and a Kalman filter tracking algorithm are used to calculate and track the real time x-y coordinates of detected targets. The information is in turn overlayed on a digitized map of the terrain. A series of field experiments was conducted to evaluate the performance and capability of the system.

Descriptors :   *ACOUSTIC DETECTION, *TARGETING, *ACOUSTIC TRACKING, ALGORITHMS, SIGNAL PROCESSING, STATIONS, GROUND LEVEL, REAL TIME, BATTLEFIELDS, SIGNAL TO NOISE RATIO, FIELD TESTS, KALMAN FILTERING, ACOUSTIC ARRAYS, RADIO LINKS, AERIAL TARGETS, HYPOTHESES, CENTRAL PROCESSING UNITS, TARGET CLASSIFICATION, MICROPHONES.

Subject Categories : Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE