[teqc] Interpolation/upsampling of rinex
Smalley
rsmalley at memphis.edu
Tue Aug 18 11:50:18 MDT 2009
Hi Lou:
I agree with your sentiments, but under the correct conditions
interpolated data is perfectly OK and valid. IF, and that is a BIG IF,
the frequency content of the analog signal before sampling has no energy
above Nyquist (half the sampling rate) then one can reconstruct the
continuous, analog signal at any arbitrary time, not just at the
samples. The IF is SO BIG, however, that anyone proposing to
upsample/interpolate is most probably not doing something valid (just
the fact that they are asking indicates they probably don't understand).
I have a manuscript in press at SRL that talks about aliasing and
high-rate GPS. I can send you a copy if you agree not to distribute it
outside the Facility.
Bob
>> Teqc is a versatile tool for manipulating rinex files. Does it also do
>> upsampling/interpolation of rinex data? I have not found any description
>> in the manual/tutorial.
>>
>
> Teqc make data up out of thin air? That's a big "no".
>
> --lou
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Louis H. Estey, Ph.D. office: [+001] 303-381-7456
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>
> "If the universe is the answer, what is the question?"
> -- Leon Lederman
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--
Dr. Robert Smalley, Jr.
Research Professor
Center for Earthquake Research and Information
The University of Memphis
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