DID YOU KNOW? DTIC has over 3.5 million final reports on DoD funded research, development, test, and evaluation activities available to our registered users. Click
HERE to register or log in.
Accession Number:
AD0831579
Title:
PROCESSING OF DATA FROM SONAR SYSTEMS, VOLUME 4, SUPPLEMENT 1
Corporate Author:
GENERAL DYNAMICS GROTON CT ELECTRIC BOAT DIV
Report Date:
1967-12-27
Abstract:
This Supplement and Volume IV examine performance of digital optimal and suboptimal detectors in an interference-dominated environment. Costs of clipping and sampling and the problem of recovering clipping losses are evaluated. Detection threshold variations dependent on measured noise parameters are also studied. Using noise power as a parameter shows non-parametric properties asymptotically independent of the noise amplitude distribution. Reduced dependency on noise properties can also be achieved by a zero count at each hydrophone. An active receiver using widely separated receivers for reverberation and noise-dominated conditions, and the effect of linear frequency modulation on the transmitted signal, are examined. Computation of ambient noise directivity is reported for shallow depths.
Descriptive Note:
Annual rept. 1 Jul 1965-1 Jul 1966
Supplementary Note:
Prepared in cooperation with Yale Univ., New Haven, Conn.
Pages:
0136
Distribution Statement:
Approved for public release; distribution is unlimited.
Contract Number:
NONR-2512(00)
File Size:
8.26MB
