Mini RTK INS/GNSS with affordable Multibeam

New WASSP S3r Multibeam Sonar

Mini RTK INS/GNSS : The new WASSP S3r is one of the world’s most cost-effective, professional survey and mapping multibeam sounder solutions.

It combines data from a multibeam sounder transducer with 224 beams covering 120° degrees swath port-to-starboard along with position, heading, and motion to create an accurate bathymetric map of underwater features for various survey situations and environmental conditions. WASSP S3r is able to survey area up to 10 times faster than a single-beam sounder.

With the very high requirements hydrographic surveying has for accuracy, WASSP needed a solution for RTK + INS that could allow the sounder to create accurately positioned 3D bathymetric representations of the seafloor, down to centimeter accuracy with minimal passes.

This demand combined with the complexities of tide, and boat movement mean that in order to get usable position and motion data, a dual antenna system was required.

The company made multiple test scenarios from which the SBG Ellipse-D Inertial Navigation System came out as the best choice based on accuracy of consecutive test mapping.

“We required a cost-effective and high-precision position and motion solution. It needed to be able to combine with our WASSP multibeam technology so we could meet the high level of accuracy our customers expect” explains Bart Slingerland, Product Owner at WASSP.

WASSP integrated the Ellipse-D into its S3Pr portable survey package, prioritizing size, weight, and cost.

SBG’ Ellipse-D fits in a covered housing for quick setup on small vessels and interfaces with WASSP DRX and CDX.

Ellipse-D, The Smallest RTK INS on the Market

The new Ellipse-D has been launched in June 2020. This miniature Inertial Navigation System (INS) provides RTK position, 0.05° attitude, and dual antenna heading. It also outputs a 5cm heave, that adjusts automatically to the wave period.

This sensor easily integrates into marine projects, thanks to its compatibility with TSS1, PASHR, and INDYN protocols.

Ellipse is the smallest heave sensor at this level of performance, and the OEM version allows the tightest integrations. “We are very proud to be part of WASSP S3r and S3Pr.

WASSP innovative solutions makes multibeam sonar technology available to the largest professionals” to conclude Thibault Bonnevie, CEO of SBG Systems.