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Jan,
Ya gotta look closer! under the top receive section, it says '100 kHz TVG amp' and the bottom it
says '500 kHz TVG amp'
Also, by 'dynamic' Sture means dynamic range (I believe) which is the ratio of your largest
acceptable signal to your smallest. Because close objects will return a loud ping that will be orders
of magnitude larger than the return from a distant object, you need a wide dynamic range.
So to put it simply, high bandwidth = more details, high dynamic range = longer sonar range.
-Bob
use a dual gate mosfet with a ramp (2 knee) to
give a tgc (time gain control) to linearize the
return signal---little gain after "bang" with gain
increase after n time--this is how the problem is
resolved in medical ultrasond imaging equipment..
also any phd's out there---phased array---with
ducers timing correct--the effect is to cause
a focus field of view at a specific distance from
the array.again from the medical....
reg-rick
Ya gotta look closer! under the top receive section, it says '100 kHz TVG amp' and the bottom it
says '500 kHz TVG amp'
Also, by 'dynamic' Sture means dynamic range (I believe) which is the ratio of your largest
acceptable signal to your smallest. Because close objects will return a loud ping that will be orders
of magnitude larger than the return from a distant object, you need a wide dynamic range.
So to put it simply, high bandwidth = more details, high dynamic range = longer sonar range.
-Bob
use a dual gate mosfet with a ramp (2 knee) to
give a tgc (time gain control) to linearize the
return signal---little gain after "bang" with gain
increase after n time--this is how the problem is
resolved in medical ultrasond imaging equipment..
also any phd's out there---phased array---with
ducers timing correct--the effect is to cause
a focus field of view at a specific distance from
the array.again from the medical....
reg-rick
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