Page 31: of Marine Technology Magazine (November 2024)

The 3400-OTS receiver array is seg- mented for standard sub-bottom pro? l- ing operations or “pipeline” mode for optimal location and imaging of buried pipelines or cables. The system offers real-time re? ection coef? cient measure- ments. “This unique ability of the Ed- geTech sub-bottom pro? ler system al- lows users the ability to collect complex analytic data using linear system archi- tecture to measure sediment re? ection and analyze sediment type determina- tion,” says McGowen. Additionally, the system has discrete transmit and receive channels allowing for continuous data collection resulting in a high ping rate, particularly important for construction and pipeline surveys.

At the high end of the market, EdgeTech has just started to deploy the buried ob- ject sonar system (eBOSS) which is ca- pable of penetrating the seabed to accu- rately detect, locate, classify and identify buried and partially proud objects. This low-frequency acoustic imaging system can be operated in real-time for general survey purposes such as cable and pipe tracking and route surveys or have the data post processed utilizing synthetic aperture sonar processing to render 3-di- mensional images of buried objects.

Exail’s new Echoes Compact provides high-resolution images of sedimentary deposits and buried objects across a depth range from very shallow waters to 400m. The system is speci? cally de- signed for USVs and small vessels as it features low power consumption and compact dimensions. It is a portable solution suited to river, lake and ocean surveys, whatever the seabed topogra- phy. Exail says it offers good penetra- tion of clays and sands due to its power- ful low-frequency signal, together with 7.5cm vertical resolution thanks to a wide bandwidth from 5 to 15kHz.

Exail sold its ? rst Echoes Compact to

Hydroconsult. The company is serving as a consultant and personnel provider to a major multi-energy ? rm in Africa which is analyzing the sub-bottom before the installation of telecommunication cables and pipelines in West Africa.

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