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  3100-P Portable Sub-Bottom Profiling System C O N F I G U R A T I O N   D I A G R A M



 

    Model 3100-P Portable
   Topside Processor with
   DISCOVER Sub-
   Bottom Software

 

 

 

 

 

 

                          

 

*Download 3100-P Brochure


APPLICATIONS

  • Geo-technical surveys
  • Hazard surveys
  • Environmental site investigations
  • Geological studies
  • Buried object location
  • Search and recovery
  • Locate and map buried pipelines and cables
  • Mining and dredging surveys
  • Bridge and shoreline scour surveys

FEATURES
  • Portable
  • Low power requirement
  • 20-30 dB improved SNR over conventional systems using Full Spectrum (“chirp”) Pulses
 

DESCRIPTION

The 3100-P is EdgeTech’s portable sub-bottom profiling system. It uses Full Spectrum CHIRP pulses to create high definition image slices of sub-bottom structure below the bottom. It can be used in rivers, lakes, ponds, and in the ocean. Two towfish are available to meet the penetration and resolution requirements of a survey.

The towfish use special designed transmitters with low Q- wide band characteristics best suited for CHIRP transmissions. Two multi-element line array hydrophones are installed in the tow vehicle to reduce acoustic scattering from the sides.

This results in a narrower across/along track beam pattern.

A linear power amplifier is used to generate clean, harmonic free transmissions.

A portable splash resistant topside case contains the amplifier and other Full Spectrum electronics. A laptop computer running EdgeTech’s DISCOVER sub-bottom software is where the sonar data is displayed and stored.


S   P  E  C  I  F  I  C  A  T  I  O  N  S
    Towfish Model SB-424 SB-216S

    Frequency Range

4 - 24 kHz

2 - 16 kHz

    Pulses (user selected)

4-24 kHz, 4-20 kHz, 4-16 kHz

2-16 kHz, 2-12 kHz, 2-10 kHz

     Vertical Resolution

4 cm / 4-24 kHz
6 cm / 4-20 kHz
8 cm / 4-16 kHz

 6 cm / 2-15 kHz
8 cm / 2-12 kHz
10 cm / 2-10 kHz

    Penetration (typical)
    in coarse calcareous sand (meters)
    in clay (meters)    
2
40
6
80

    Beam Width
    (depends on center frequency)

16° / 4-24 kHz
19° / 4-20 kHz
23° / 4-16 kHz  

 17° / 2-15 kHz
20° / 2-12 kHz
24° / 2-10 kHz

    Size (centimeters)

77L x 50W x 34H

 105L x 67W x 40H

    Weight (kilograms)

45
76

    Cable Requirements

3 shielded twisted pairs (5 used)

    Maximum Towfish
    Operating Depth

300 meters (1,000 feet)

    Optimum Tow Height

3 to 5 meters above sea floor

    Tow Speed

3-4 knots optimal, 7 knots maximum safe operational


3100-P vs. 3200-XS SUB BOTTOM SYSTEM FEATURE COMPARISON
     3200-XS 3100-P

    Power Input

 120-220 VAC 120-220 VAC or 12 VDC

    Towfish Interface

All SB-424, SB-216S only

    Power Amplifier

 2 KW (4 KW option) 200 Watts

    Navigation Message Input

 Robust Limited

    Bottom Sediment Classification

 Yes No

    Bottom Tracking

Yes Yes (always on)

    Color Palette

Yes Gray scale only

    Data Type

Native complex numbered format (.jsf) and/or standard Seg-y Seg-y only

    Heave Compensation Input

 Yes No
    Hull Mount Yes No
    Mass Storage Hard drive (archive to DVD-RW or via LAN connection) Hard drive (archive to DVD-RW)
    Maximum Ping Rate 18/second 6/second

    Maximum Water Depth Below
    Towfish

None Depth dislpay based on ping rate (max 100 meters)
    Multiple Pings in Water Column Yes No
    Navigation Screen with Ship Track Yes, optional with 3rd party software No
    Depth Sensor Option SB-0512i towfish only No
    Printer Drivers EPC, Ultra, HP, Odeco, Isys, others added regularly EPC, Ultra, HP, Odeco, Isys, others added regularly
    Print Options Prints real-time Printing not supported at this time on portable topsides
    Topside Display Processor PC based and 3rd party processor through Ethernet interface EdgeTech topside only (PC based)
    Navigation Files Yes, ASCII XY file No
    Digitization Yes, XYZ ASCII file No
    Scale Lines Yes, user adjustable No
    Swell Filter Yes, display only No
    Data Delay Yes, user adjustable screen No
    Alerts Yes, multiple user defined No
    Image Capture Yes, JPEG No

4 Little Brook Road • West Wareham, MA 02576 • USA • Phone: 1-508-291-0057 • Fax: 1-508-291-2491
1141 Holland Drive Bay 1 • Boca Raton, FL 33487 • USA • Phone: 1-561-995-7767 • Fax: 1-561-995-7761

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