EA440 - hull mounted sidescan sonar
EA440 is a high performance hydrographic wide band single beam echo sounder. The echo sounder is developed for hydrographic use in shallow to medium depth waters. It also supports portable and hull mounted sidescan sonar survey.
EA440 sidescan sonar surveys
Specially designed transducers for hull or over-the-side mounting are available from Kongsberg Maritime for sidescan operation. The operating frequency is 120, 200 or 500 kHz. With a beam width of 50 degrees vertically and only 0.5 or 2 degrees horizontally the scanning sector is narrow enough to resolve relatively small objects on the sea floor, but wide enough to allow higher survey speeds than with conventional side looking echo sounders. Bottom elevations and objects are immediately recognized in the EA440 echogram.
The EA440 sidescan sonar transducers occupy 2 of 4 WBT channels. The EA440 system allows for combined application with depths and/or sub-bottom profiling.
Sonar Mosaic is a Kongsberg Maritime software tool for real-time or postprocessed creation of georeferenced mosaic of the sidescan sonar data. Sonar mosaic will read EA440 sidescan sonar raw data or XTF data and create a georeferenced mosaic of the files. The mosaic can then be saved as geotiff files for further use and visualization of the sidescan data.
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