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TruePix™ Compressed Water Column

All R2Sonic MBES also support TruePix™ Compressed Water Column. TruePix™ is an exclusive, unique functionality developed by R2Sonic that has the benefit of simultaneously reporting backscatter and water column imagery.

TruePix™ is independent from bottom detection and therefore can report targets in the water column. It consists in recording one sample data per range bin and per side (starboard and portside).  This format delivers highly compressed water column imagery data (1% of traditional water column files), which enables real time water column data processing.

In addition, TruePix™ returns amplitude, range and angle for each target, which ensures unmatched accuracy and precision.

The TruePix™ option is embedded in all R2Sonic systems and can easily be enabled from the field with option purchase.

Video TruePix™

Learn more about TruePix™ Compressed Water Column

  • TruePix™ is a continuous record reporting one back scatter value for each range per side. Close to Nadir it will typically be a few backscatter values that covers the bottom detect point, while on the outer beams it can be many hundreds of backscatter values around the bottom detect point. TruePixincludes port and starboard time series magnitude values (similar to sidescan), plus across‐track angle values (relative to the sonar head) to help you locate each magnitude sample in space.
  • This is alike to an interferometric side scan data set, so the angular data will be noisier than the bathy data reported in the bathy packet.

  • All the settings are provided in the packet so they can be unwound by the image processing package.
  • TruePixis assembled independently of the bathy data. Another way to think about it ‐ You wouldn't want to use bathy results to reject sidescan data. Same for TruePix. By keeping the imagery independent from the bathymetry, it can be used for quality control.
  • We were planning on the image processing reading the pitch data and applying it. The along‐track angle (relative to the sonar head) is currently zero, as reported by header value H0_TxSteeringVert. TruePix™: Assembled and corrected imagery record with raw phase data. TruePix™ is derived independently of the bottom detect, and thus can be used to evaluate the quality of the bathymetry data. It also is a continuous record for each side containing amplitude and phase for each pixel, and the ambiguities associated with snippet assembly has been eliminated.

R2Sonic Products

We offer a simplified portfolio of 4 MBES, all with wideband selectable operating frequencies. What sets R2Sonic apart is the ability to customize each sonar with any of our suite of revolutionary technical options. You can add any of these options to any sonar at any time. You can upgrade remotely from wherever you are, whenever you need.

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Lloyd Huff


Former Research Professor at Univeristy of New Hampshire and NOAA