A-B Change Detection for Sidescan

By Howard Unkeles and Harold Orlinsky Creating a sidescan mosaic for a survey is easy. And doing a second survey is also easy. You can even use the same line plans, as the area is known. But what’s difficult is to find any differences between the two. A visual inspection will find new features, or if there if something moved. But imagine doing this for …

2D & 3D Drawing Improvements in SonarWiz

With the release of SonarWiz 7.5, Chesapeake introduced a drawing cache mechanism designed to allow for compact storage of, and quick access to, large bathymetric point clouds for display within the 3D viewer. This cache allows for much faster loading and drawing of large surveys by varying the level of detail shown to match the point of view, data loaded, and …

Forward Looking Sonar for Sidescan

By Chris Favreau, Program Manager We are adding support for Forward Looking Sonar (FLS) systems to SonarWiz 7.6. While the data for FLS systems look similar to other sonar systems such as Side Scan Sonar (SSS), FLS data is different and presents its own challenges. The FLS data is presented as a snapshot much like a video frame. It can be …

Processing Multibeam Imagery in SonarWiz

By David Finlayson, Chief Scientist Multibeam echo sounder (MBES) imagery has improved dramatically in recent years and each new version of SonarWiz has introduced improved tooling for working with these data. Most of SonarWiz’s image processing and targeting tools are now also available for MBES systems. In this article we will take a look at the two different approaches offered …

Beam Performance Test

By Harold Orlinsky, General Manager Beam Performance Test new to SonarWiz 7.6If you’ve ever been asked – how good is your multibeam system, don’t fall into the trap of just looking at the system specification for the sonar. It’s not the answer you need. You need to consider everything that goes into the system to come up with an answer. …