Figure 23. End view of the acoustic transducers on an acoustic backscatter sensor (ABS), each of different frequency. Inset shows the side view of an acoustic backscatter sensor (ABS) mounted on a tripod.
U.S. Geological Survey Open-File Report 2007-1194
|
||
Figure 23. End view of the acoustic transducers on an acoustic backscatter sensor (ABS), each of different frequency. Inset shows the side view of an acoustic backscatter sensor (ABS) mounted on a tripod. | ||