SACLANT Sonar Data
The vertical underwater acoustic array data was collected in shallow-water
off the Italian west coast by
the NATO SACLANT Center
in La Spezia, Italy.
SACLANT Center has
made this data available to the public for the purposes of furthering
signal processing research.
Researchers who make use of the data should acknowledge the SACLANT Centre as
the source of the data in all presentations or publications.
The original SACLANT time series has been converted to a series of
MATLAB .mat files each of which contains a matrix "dat" that is
48 sensors by 64K data points long.
Each file represents about 1 minute of data
at the sampling rate of 1 kHz.
Note that channel 24 is inverted.
Each file has been compressed, and stored under a name ending in ".bin",
which forces net browsers to request where to store a file rather
than display it.
Each file's extension should be changed to ".mat" to enhance compatability
with Matlab.
The data were recorded on October 26 and 27, 1993, and have been preprocessed
to focus on three separate sources.
Sound speed profiles
were also measured.
- 170 Hz source (A2601_1 recorded on Oct. 26)
Files 1,
2,
3,
4,
5,
6,
7,
8,
9,
10
(5 and 10 about 3.8 Mb; rest 6.5 Mb)
- Moving (170 Hz) source (P2701 recorded on Oct. 27)
Files 1,
2,
3,
4,
5,
6,
7,
8,
9,
10
(5 and 10 about 3.8 Mb; rest 6.5 Mb)
- 350 Hz source (A2601_2 recorded on Oct. 26)
Files 1,
2,
3,
4,
5
(5 about 3.8 Mb; rest 6.5 Mb)
Please consult the postscript
document
for a description of the experiment. A further description of the
experiment, along with results for estimating geoacoustic parameters and
source position, may be found in papers by D.F. Gingras and P. Gerstoft
published in Journal of the Acoustical Society of America.
The first appeared in the June 1995 issue (97:
3589-3598), and the second in May 1996 (99: 2839-2850).
The sensor
depths (in m), and environmental data for each measurement are available.
Three papers that develop algorithms and test them on these data are
stored on SPIB.
A MATLAB program
that calculates cross-spectral matrices from these data illustrates
how to read and manipulate the data.
Computational acoustic propagation models which can be used when processing
this data may be found at the Ocean
Acoustics Library.
In addition, the input file
can be used with the KRAKEN normal mode program
to obtain a baseline model of this underwater channel.
Go back to array data selection.
Go back to signal data directory selection.
Go back to data directory selection.
Go back to SPIB's main page.
8/20/96