[mathcad] RE: DSP method

Author: Pergande, Albert N Posted: Wed, 11 Jan 2006 13:40:37 -0500

try correlating them with different index offsets. depending on the
data, you might only need a subset of the whole data stream.

Al Pergande
Senior Radar Engineer
Lockheed Martin Missiles and Fire Control
MP 200
5600 Sandlake Road
Orlando, Fl 32819

Voice 407-356-5169
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"albert.n.pergande"
for personal mail - "al"

_____

From: Mark Smith "mailto:mark.smith"
Sent: Wednesday, January 11, 2006 12:26 PM
To: Mathcad Discussion List
Subject: [mathcad] DSP method

I have 2 digitised signals (A2D sampled) which are very similar in shape
but differ by a fixed time difference, can anyone suggest methods which
will allow me to calculate what the time difference is?
I have the feeling that if i can somehow use all the data I should get
a much more accurate value than say just comparing a zero crossing of
the 2 traces which I think will be far more susceptable to noise in the
signal.

Thanks in advance
mark

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