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INSTRUMENTATION
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.
Although there are
numerous data acquisition systems within ESL, several are
very noteworthy, and are unique assets developed by ESL
for the U.S. Navy. The specifications of these systems
are provided below. Questions concerning the capabilities
or availability of these systems should be E-mailed to:
ESL_Engineering_Team@arlut.utexas.edu
In addition to these
specific data acquisition systems, the ESL Engineering
Team can custom build a data acquisition system to a customer
specification. Custom arrays can be built to a customer
requirement limited to the maximum lengths stated in the
specifications for each recording system.
ACOUSTIC
DATA ACQUISITON SYSTEMS
supported by the ESL Engineering Team
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| BOTTOM
MOUNTED, AUTONOMOUS RECORDERS |
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1. SWAMI
32 and SWAMI 52 (Shallow Water Acoustic Measurement
Instrumentation)
- Channels
- 32 or 52
- Resolution
- 12 or 16 bits (SWAMI 32), 12 bits (SWAMI 52)
- Frequency
- 10Hz - 1 KHz
- Sampling
rate - 2400 sps/channel or 76.8 Ksps
- Recording
media - DAT DDS-3
- Real time
monitoring - 10 km, single-mode fiber optic link
- Data Recording
capacity - 264 GB (two tape changers)
- Continuous
record time - 8 days (battery limited)
- Parameter
Adjustments Available - hydrophone sensitivity,
input gain, A/D gain, tape sequence, recorder start/stop
- Command
Link - hardwire umbilical, Acoustic Link, or fiber
optic
- Maximum
Depth - 500 meters
- Array types
- Horizontal and Vertical line arrays, Wye-array.
HLA lengths up to 1 km have been successfully deployed
- Hydrophone
Self Noise - 10 dB or better below SS0 noise
- Number of
Deployments to date - 13
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2. DOSS
(Deep Ocean Survey System)
- Channels
- 32
- Resolution
- 12 bits
- Sampling
rates - 800 sps/channel or 25.6 Ksps
- Recording
media - DAT DDS-3
- Data Recording
capacity - 132 GB (one tape changer)
- Continuous
record time - 8 days (battery limited)
- Parameter
Adjustments Available - hydrophone sensitivity,
input gain, A/D gain, tape load sequence, start/stop
recording
- Command
Telemetry - Acoustic Link (all adjustable parameters
plus environmental and system status including recorder)
- Maximum
Operating Depth - 4000 meters
- Array types
- Horizontal and Vertical line arrays. HLA lengths
up to 1 km have been successfully deployed.
- Hydrophone
Self Noise - 10 dB or better below SS0 noise
- Number of
Deployments to date - 10
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| OTHER
DATA ACQUISITION SYSTEMS & INSTRUMENTATION |
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1. Air-Borne
Recording System - POCO AMIGO
- Aircraft type - P3C
- Receive Channels - Sonobuoy
original 31
- Record Channels - 32 (Racal
Storeplex II)
- >Resolution - 16-bits
2. Radio Telemetry Buoys
Moored
- Types - Single Channel
Omni or DIFAR
- Data Format - analog sonobuoy
receiver output and DIFAR Demultiplexer output
- Telemetry Frequency -
Sonobuoy band (original 31 channels)
- Telemetry power - 1 watt
into a 6 dBi gain vertical antenna
- Telecommands (UHF) - RF
transmitter on/off, RF channel, acoustic gain,
hydrophone sensitivity, anchor release
- Life - 8 days
- Sea State Maximum - SS3
operational, SS5 survival
Number of Deployments - >5
Drifting (Position Reporting)
- Type - 6 channel, vertical
line array
- Data Format - analog multiplexed
+ RS-232 position text
- Telemetry Frequency -
Sonobuoy band (original 31 channels)
- Telemetry power - 1 watt
into a 6 dBi gain vertical antenna
- Position Accuracy - Coast
Guard Beacon DGPS (<10 m)
- Telecommands (UHF) - RF
transmitter on/off, RF Channel, hydrophone sensitivity
- Life - 3 days
- Sea State Maximum - SS3
- Number of Deployments
- >10
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