Towed profilograph for sea floor probing

Towed profilograph for sea floor probing

The device allows to probe the surface of the sea floor, search silted objects, estimate the sea floor profile, allows to monitor the fairway.

This device can work in different modes: sensing, setting the parameters of profiler, marking the work area, technical diagnostics, training mode, help system. The instrument can classify the type of soil: soft (mud, sand), hard (granite, gravel), gas-saturated, mixed. Profiler provides a combination of echo-signal information with HBO data.

Performance of profiling is not less than 2 km2/h, depends on the type of soil and profiling mode.

Technical and technological parameters:

    • Range of operating depths (to bottom) is from 0.5 to 300 m
    • The maximum depth of penetration into the soil of from 5 to 30 meters (depending on acoustic properties of the soil).
    • Total sector review of acoustic system is 30° x 4°, formed by five rays 6° x 4°.
    • Resolution:

• in depth — no more than 0.15 m;
• by angle — not more than 3° in traverse plane;
• in direction of movement — at most 2°;

    • Types of emitting difference signals:

• single pulse — (0,1 to 0,3 ms);
• tonal (frequency is from 3 to 10 kHz, 0.1 to 2.0 ms);
• phase-shifted code sequence (length is from 5 to 10 ms)

    • Compensation:

• board rolling: ±6°;
• keel rolling: ±4°;
• vertical movements: 1,0 ±0,05 m.