[epicwhaleburger]

With SONAR, the transmitted sound source is also being received at the same point which allows for the intended measurement. This generalizes that method to a source being captured by a sink in any point in the predefined 3D space. I’d say it’s far more flexible as an emerging technology that sticking with something like SONAR which is primarily used for water-specific applications.

[CSSer]

That’s what I mean. I was surprised I didn’t find what you wrote in the article.