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Overview of Dolphin-Inspired Sonar
and of Geometric Wavar.

22 March 2016: A toascope has an array of receivers and computes images
via times-of-arrival of signal-features at those sensors.

Animations of Simulations Experiments

Main Page of Dolphin Inspired Sonar.

"Wavar" is used to refer to principles and application of principles that are true of waves in general, be they of sonar or of radar or of some other modality.
Old terminology:
The sensors function in small subsets called "scopions." Each scopion produces from echoes a small "scopic part" of an "image-model" from which images can be computed.
Newer Terminology (2017)
Scopions, still important in biology, are replaced in the algorithms of computation by "synchrons."
"Echoscope" is now a "Toascope."
A "modeling-neuron" is now a "toron."
"FBP" = Feature-Based Passive wavar. It computes pictures when the form of a feature of wave is known but the time and place of generation of the wave are not both known.

Some Distinguishing Aspects of Geometric Wavar

Applications of This New Technology

The Echotrigger/Scopion Theory
of How Neurons Can Image with Sound
. (the "Echotrigger/Toron Theory")

Why "Echolocation" Cannot Explain
the Sonic Vision of Dolphins

Current work

The Inventor and Odds and Ends

The inventor here is Douglas Moreman of Baton Rouge.
Who can be reached via

People whose work has informed or inspired me, with respect to dolphins or sonar, include:
Whitlow Au: "The Sonar of Dolphins"
Randall L Brill "Evidence for an acoustical pathway to the inner ear through the lower jaw for an echolocating dolphin (Tursiops truncatus)"
Paul Nachtigall and Heidy Hardy, as in: "Object representation in the bottlenose dolphin: integration of visual and echoic information."
John Potter and Elizabeth Taylor: "Dolphin sonar -- modelling a new receiver," and Potter's article on passive, imaging sonar in Scientific American.
M.J. Xitco and H. L. Roitblat: Object recognition through eavesdropping: passive echolocation in bottlenose dolphins.
John Gitt, introduced me to sonar, circa 1993.
Donald Haefner, tutored me in 2011 in seismic imaging in the oil and gas industry.

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