Echo example

[Jan]

I am looking for a recorded echo(s) of a sidescan to use as test signal.


It will make testing much easier.


Regards, Jan

[Sture Hultqvist]

Re: Echo example

Hi


What kind of specs do you have in mind ?


A number of lines 8 bit x 512 samples/ channels


is what I have.


Sture

[Jan]

Re: Echo example

Sture,


I was thinking about signal coming from the transducer.


I will be needing something to test my echo processing.


The echo you have will be very usefull.


I suppose its not "raw" echo but already an echo processed by a DSP card. (I.e. DAC output)


I could use this data to test if I will use a DSP card or see if the PIC is powerful enough to do the signal processing also.


(Love these PIC's.... can change whole setup by just reprogramming a few pins... hehe)


Perhaps you could send file to Carl, so he can put it on the forum's Project Files folder.


Regards, Jan

[Sture Hultqvist]

Re: Echo example

Sure..


I will search for the CD. By the way I don't process


my data with DSP, only a minor filtering.


Sture

[Jan]

Re: Echo example

Sture,


Glad to hear that.... means my filter can be simple also.


Regards, Jan

[Sture Hultqvist]

Re: Echo example

My filtering is bandpass in the towfish as showed


in the schematics. One more bandpass in the


upside amplifier and a anti-alias filter before


the ADC, a RC lowpass filter.


Sture