Creates an analytic model for a deep sound channel profile.
The catenary form of this profile useful because its ray paths can be computed analytically and used to test propagation loss modeling accuracy against standard benchmarks. The general form of the deep duct catenary profile is defined as:
c(z) = c1 * cosh( (z-z1) / g1 )
where:
z = depth below the ocean surface (positive direction down).
c(z) = speed of sound as a function of depth
z1 = depth of the deep sound channel axis
c1 = speed of sound at the deep sound channel axis
g1 = sound speed gradient scaling factor
- References:
- S.M. Reilly, M.S. Goodrich, "Geodetic Acoustic Rays in the
Time Domain, Comprehensive Test Results", Alion Science and Technology, Norfolk, VA, September, 2006.