Technology Advantage

How it works:
This system includes a topside processor running a sonar acquisition software package, a high speed communications link, a power module for driving long cables at high data rates, and a tow vehicle that includes the dual frequency side scan transducers, built-in heading pitch and roll sensor and safety retrieval system. It will easily integrate optional sensors.

Features
Greater dynamic range
Enhanced resolution
Repeated transmitted Chirp waveforms
Constant Temporal resolution
Stainless steel tow vehicle rated to 1,750 meters
Uses Triton Isis "Lite" or Chesapeake Sonar Map software

Benefits
Competitive price
Dual simultaneous transmit in Chirp or CW mode
Rugged and portable for harsh conditions
Ethernet output to central processor

C3D

How it works:
The C3D uses a patented technique called Computed Angle of Arrival Transient Imaging (CAATI) under exclusive license to Teledyne Benthos. This method will calculate a range and angle for thousands of points across a track in order to produce a high resolution bathymetry layer. High resolution side scan is produced using all six arrays available for each side of the C3d.

Features
Patented technique (CAATI)
Built in heading, pitch and roll
Towed, AUV or over-the-side mount
Simultaneous port and starboard transmission
6 receive arrays per side
Narrow 1-degree beam

Benefits
Wide swath bathymetry
Higher crosstrack resolution (2,000 samples/100 meters)
Co-location of imagery and bathymetric data for intuitive interpretation
Added sensors can include magnetometer, pressure, temperature and responders

Chirp Technology
The CAP-6600 digitally synthesizes and transmits a linearly swept, frequency-modulated Chirp pulse with resolution inversely proportional to the transmitted bandwidth. This process ensures high-resolution images of the seafloor and sub-bottom layers. The Chirp output is a long FM pulse which provides an additional 20 to 30 dB signal to noise ratio improvement over conventional sub-bottom profiling systems. This, combined with the matched filter correlation, results in significantly increased resolution and penetration. The signal processing substantially reduces transducer ringing and side lobes, which is imperative for shallow water operation.

The transmitted waveform is repeatable from pulse to pulse which provides acoustic data that is quantitative, allowing measurement of sonar data required in sediment classification. This allows for the data collected today to be used in the future classification processes.

Multi-Discipline System Configurations
The CAP-6600 (Chirp II) modular design allows for a variety of system configurations. These configurations include the following:

Shallow water (0–200M) single (2–7 khz) and dual frequency (2–7 kHz and 10–20 kHz) Chirp systems
Deep water (up to 1000M) single ( 2-7 khz) and dual frequency ( 2-7 kHz and 10-20 kHz) Chirp systems
Combined analog and Chirp system (2-7 kHz chirp and 400 Hz analog)
Chirp II hull mount configurations up to full ocean depth

This modular approach provides a system for all applications in all water depths.

The combined Chirp and analog configuration provide the user with the ability to collect high resolution Chirp imagery as well as low frequency data collected by Datasonics 400 Hz Bubble Pulser Source (or other analog device) This data is processed, displayed and archived on the Chirp II. The combination generates a full data set for most profiling operations.

In addition to the sub-bottom profiling configurations, the Chirp II shares a common processor/workstation with Datasonics SIS-1500 Chirp Side Scan Sonar System. With the addition of the operating software, ChirpLink multiplexer, and side scan tow vehicle, the Chirp II can be utilized as a side scan sonar system. This flexibility significantly increases the utilization and effectiveness of this system.

Applications

Geophysical, bathymetric and archaeological surveys
Remote bottom sediment classification
Pipeline location and buried depth measurement
Cable routing
Foundation studies
Bridge work
Offshore oil survey
Mining studies
Environmental studies
Salvage operations and buried treasure hunting
Military applications, such as buried ordnance location and mapping