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Once the requirement to collect acoustic data is established
and the parameters of the data to be collected are known,
an analysis of the capabilities of the collection system
to satisfy the requirement is performed. When the characteristics
of the signal to be collected are known, the analysis of
the ability of the collection system cannot respond, an
engineering analysis is performed to develop a change to
the current system or a new total system specification is
generated.
When a potential need for a specific data collection and/or
reduction capability arises, analyses are begun to define
the collection objectives, the minimum acceptable functional
requirements, the specific technical performance needed,
and its attainability. System functions and sub-functions
are progressively identified and analyzed as the basis for
identifying alternatives for meeting system performance
and design requirements. Cost and performance trade-off
analyses are performed for each alternative to obtain a
preferred approach. For each function and sub-function a
set of performance and design requirements are developed
and a time line is prepared which encompasses acquisition
and development of the system, including hardware, computer
programs, procedural data, facilities and personnel.
We are currently providing acoustic data collection and
analysis services to a number of customers, two of whom
are listed here as examples. The first is support to the
NSWCCD for ship acoustics, acoustic data collection systems,
system performance and self noise; acoustic signal processing
and at sea experimental design and testing. The second is
support to NUWC for collection and analysis of data for
the test and evaluation of the Submarine Towed Array Sonar
Program. DDL OMNI tailors the acoustic data collection and
analysis system to the customer requirements.
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