Method and apparatus for simulating phase coherent signal reflec

Details Method and apparatus for simulating phase coherent signal reflec Method and apparatus for simulating phase coherent signal reflec

1988-05-23

1989-10-03

Tarcza, Thomas H.

Communications, electrical: acoustic wave systems and devices

Echo systems

367 97, H01S 966

Patent

active

048721468

ABSTRACT:
A method of simulating phase coherent signal reflections in media containing randomly distributed targets capable of scattering signals transmitted through the media, wherein the energy of signals directly scattered by the targets is significantly greater than the energy of signals multiply scattered by the targets. A reference signal having a wavelength which is small in comparison to the mean spacing between the targets is modulated and then transmitted through the target-containing medium. The targets produce scattered echoes of the signal, from which normalized in-phase and quadrature components are derived and separately, cumulatively summed, "n" times, until their variance becomes a linear function of 1
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