The Datasonics SIS1000 was made by Datasonics, Inc., which is now a part of Teledyne
Benthos Inc., of North Falmouth, Massachusetts.
The SIS-1000 utilizes Chirp Technology in the (90-110 kHz) frequency band for side
scan sonar and (2-7 kHz) for sub-bottom profiling.
The SIS-1000 digitally synthesizes and transmits a linearly swept, frequency-modulated
(chirp) pulse with resolution proportional to transmitted bandwidth-not pulse length
- for swaths up to 1500 meters.