Equipment Rentals

EdgeTech 2200 Modular Sonar System

EdgeTech 2200 Modular Sonar System
  • Full Spectrum Chirp sidescan sonar
  • Full Spectrum Chirp sub-bottom profiler
  • Completely autonomous operation
  • Controllable from AUV or acoustic link
  • Archeological Surveys
  • Geohazard Surveys
  • Geological/Geophysical Surveys
  • Pipeline and Cable Location
  • Route Surveys
  • Search and Recovery

The 2200-M Modular Sonar System is designed for installation on an Autonomous Underwater Vehicle (AUV) or on a Remotely Operated Vehicle (ROV). It gathers side scan and/or sub-bottom data using EdgeTech’s proprietary Full Spectrum (enhanced chirp) technology in water depths up to 6000 meters.

The Side Scan Sonar

EdgeTech’s Deep Water Full Spectrum “chirp” side scan sonar is a calibrated wide band digital FM sonar that provides quantitative and qualitative, high-resolution, low-noise side scan imagery. It simultaneously transmits linearly swept FM pulses centered at 2 discrete frequencies. A number of center frequency options are available. The transmission of a longer duration, wide bandwidth pulse result in higher resolution sonar images and, because more energy is projected into the water, greater SNR resulting in extended range.

An important feature of Full Spectrum side scan sonar is the reduction of side lobes in the effective transducer aperture. The wide band and linearity of the FM sweep smears the side lobes of the transducer and thus achieves a beam pattern with virtually no side lobes. Four frequency set options are offered: 75/410 kHz, 120/410 kHz, 75/120 kHz or 300/600 kHz dual simultaneous.

The Sub-Bottom Profiler

EdgeTech’s Full Spectrum “chirp” sub-bottom profiler has a number of advantages over conventional profilers. This includes increased penetration and higher resolution. The tapered waveform spectrum, results in images that have virtually constant resolution with depth. Another advantage is the reduction of side lobes in the effective transducer aperture.

The wide bandwidth of the sweep frequency has an effect of smearing the side lobes of the transducer. The result is a beam pattern with almost no side lobes. This allows the system to be very near the bottom, minimizing destructive signal scattering caused by the sediment.

The frequency range of operation is determined by the acoustic characteristics of the transmitter and receiver sensor arrays that have been selected from the three options. Each sensor array can transmit acoustic pulses with different center frequencies and bandwidths. The selection of the pulse is made on-line by the operator while profiling to achieve the best imagery. The sensor array is selected based on the sub-bottom conditions at the survey site and the type of sub-bottom features that need to be imaged. Three frequency range options are offered: 1-6 kHz, 2-16 kHz, and 4-24 kHz.

AUV FEATURES


  • Low power consumption
  • Small payload
  • Controlled by AUV or “Autonomous” operation


ROV FEATURES


  • Use/not use ROV supplied power
  • Use/not use ROV digital link
  • Link via fiber optics or coax cables

EdgeTech 2200 Modular Sonar System