Edgetech 2000-CSS, User Manual

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1.0: OVERVIEW
The EdgeTech 2000-CSS combined series sonar system combines EdgeTech’s world leading side scan sonar
and sub-bottom profiling technologies into a single package. The system uses five channels (four side scan
and one for sub-bottom) to transmit simultaneously frequency modulated (FM) pulses.
The 2000-CSS uses EdgeTech’s proprietary Full Spectrum CHIRP technologies to simultaneously generate
both high-resolution side scan imagery at longer ranges conventional continuous (CW) systems, along
with high-resolution cross sectional images of the seabed at deeper penetrations than CW systems can
achieve.
The system comes available with a choice of two dual-frequency configurations for the side scan sonar:
100/400 kHz or 300/600 kHz, and uses a low frequency, 500–12 kHz sub-bottom sonar for greater bottom
penetration in water depths up to 300 meters.
Side scan frequencies and the sub bottom frequency are transmitted simultaneously as linearly-swept,
wide band, high-energy acoustic pulses (also called CHIRP pulses) over a full spectrum frequency range.
The received echoes are processed into high signal-to-noise (SNR) images which can be directly displayed
as shades of gray or color on a computer monitor and printed on a continuous feed thermal printer. The
data can also be stored in real time onto a large capacity hard drive and archived onto a DVD.
A standard 2000-CSS system comes complete with a towfish, digital telemetry that runs over a single
coaxial cable up to 6,000 meters long, and a 19-inch rack mount topside running EdgeTech’s DISCOVER
acquisition software. Additionally, the 2000-CSS can be integrated with a number of auxiliary sensors to
track depth, altitude, and magnetrometry. The system can able be equipped with a USBL responder.
1.1 2000-CSS Applications
Applications for the 2000-CSS Combined side scan sonar and sub-bottom profiling system include:
• Archeological surveys
• Geological/geophysical surveys
• Sediment classification
• Buried cable and pipeline surveys
•
Dredging and coastal studies
•
Pre/post dredging surveys
•
Scour/erosion investigation
•
Marine construction surveys