Assessment Report: Theoretical and Measured Performance Limits of Raytheon DE723M, Atlas AN1021 and Ross Surveyor Echo Sounders, Used on A Type 711 Survey Launch,
CATHOLIC UNIV OF AMERICA WASHINGTON D C DEPT OF ELECTRICAL ENGINEERING
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In depth sounding, the sonar is called upon to perform detection and estimation of the bottom. For both its detection and estimation performance analysis, a suitable signal-to-noise ratio at the input to the transducer or at some other reference point is needed. and thus will be focused upon in this sonar equation analysis. For, at any time after transmission of the sounding pulse if the input signal-to-noise ratio is above a certain detection threshold fulfilling a specified false alarm probability criterion, a decision will be made by the receiver system that the bottom was observed, and a depth measurement provided. This report discusses the theoretical depth measurement accuracy limit assuming the bottom echo has been properly detected imposed by additive noise, and considers the detection threshold depth limit imposed by the false alarms.
- Acoustic Detection and Detectors