Page 44 - Electronic Navigation Cyber Book

Advantages:

1.The resulting shorter wavelength leads to the more diffuse reflection
desired; the echo from a specular reflection would not be received, in
view of the oblique incidence of the beam.
2.The shorter wavelength makes possible a smaller beam-angle and so
avoids the dimensions of the radiating face of the transducer becoming
too large.

3.The emitted power of the sound vibrations spreads less and thus the
echo is stronger.

© 2018 Digital Galaxy Index 44