Figure 5. The RoxAnnTM system is wired in parallel to an echo sounder and
it processes the first and second echo returns to create two values, called E1
and E2, which correspond to the bottom's roughness and hardness respectively.
Figure 5. The RoxAnnTM system is wired in parallel to an echo sounder and
it processes the first and second echo returns to create two values, called E1
and E2, which correspond to the bottom's roughness and hardness respectively.