ESL improves distributed surveillance system performance by conducting
experimental and modeling research in acoustics and signal processing.
Experimental work includes at-sea tests with the Shallow Water Acoustic
Measurement Instrumentation (SWAMI) arrays and the Deep Ocean Survey System
(DOSS) arrays. Data from these tests are analyzed and used as the basis for
developing and testing new detection and tracking concepts. Modeling is done
on a single node level, such as modeling of acoustic propagation, and at a
overall system level, such as modeling the interaction of a target and
distributed surveillance system sensors.
ESL has numerous data acquisition systems, for use in underwater, laboratory,
and other types of exercises or experiments. ESL data acquisition systems
have been used on submarines, as autonomous ocean bottom-mounted systems,
in a variety of field exercises, and in flight tests. ARL:UT has maintained
a state-of-the-art digitizing lab and has significant expertise in tape
recorder technology and data handling.
Acoustic Propagation Modeling and Data Analysis
The Environmental Sciences Laboratory has a long history of developing state
of the art signal processing algorithms. These algorithms, developed since
the mid-1980s, have been installed in many Naval SONAR systems. ESL’s signal
processing sponsors include SPAWAR, NAVSEA, ONI, ONR, and DARPA. The staff
within ESL are acknowledged leaders in the fields that include conventional
and adaptive beamforming, broadband processing, matched field processing and
active signal processing.