Impulse response measurements on University of Washington
array
Here are some of the plots that we looked at. The first 3 are waterfall
plots (linear amplitude) at various zooms, and the last four are color maps
of the same data (in dB) at various zooms. The raw data were 50 ms
mid frequency (14-22 kHz) LFMs every 250 ms, and I have match filtered the
raw data for these displays. Note that our receive array starts to
roll off about 20 kHz. The data were taken 06/27/03 at 20:15:15 Z from
a single phone of our array, #5, at depth ~30 m (Warren Fox).