QPS Qimera Automated Correction of Refraction Residuals
Webinar December 2018
This webinar introduces viewers to the TU Delft sound speed inversion tool now available in Qimera.
The tool is based on an algorithm developed by researchers at the Technical University of Delft (TU Delft), The Netherlands which works by taking advantage of the overlap between survey lines, and harnessing the power of redundancy of the multiple observations. For a given set of pings, the algorithm simultaneously estimates sound speed corrections for the chosen pings and their neighbors by computing a best-fit solution that minimizes the mismatch in the areas of overlap between lines. This process is repeated across the entire spatial area, allowing for an adaptive solution that responds to changes in oceanographic conditions.
Advantages of this tool over other commercially available solutions include:
- Completely automated process – requires no operator interaction or data review
- Physics-based algorithm – honors the physics of acoustic ray bending
- Accountable – preserves the output of the inversion process for review, vetting, adjustment and reporting
- Objective and Repeatable – math-based approach produces the same results time after time