[time-nuts] What does AMU mean?

Tom Van Baak tvb at LeapSecond.com
Sat Apr 21 17:03:38 EDT 2007


> The display window of the Thunderbolt monitor software, Tboltmon.exe, 
> has a section labeled "Signal Levels."
> There are two column in that section.
> 
> The left column is "SV," which I understand to be an abbreviation for 
> "Space Vehicle."
> 
> The other column is labeled "AMU." What does AMU mean?
> 
> Thanks.
> 
> Steve K8JQ

AMU is Amplitude Measurement Unit; I think it's specific to
Trimble. I don't know the context or the conversion between
AMU and other units like dB/vHz or SNR or C/N.

Google for words like AMU Amplitude Measurement GPS SNR
and you'll get the idea. A couple references give formulas or
conversion tables. For example, see near page A-68 in one
of the Acutime2000.PDF files.

/tvb




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