Re: [time-nuts] suitable statistics for measurements with gaps

On 4/23/16 6:28 PM, Michael Wouters wrote: The technique used for dealing with gaps is really about handling random gaps in an otherwise uniformly sampled sequence. The idea is that you take your sequence, pad it out with the missing data (tagging those points with a NaN or whatever) and then

Re: [time-nuts] suitable statistics for measurements with gaps

The technique used for dealing with gaps is really about handling random gaps in an otherwise uniformly sampled sequence. The idea is that you take your sequence, pad it out with the missing data (tagging those points with a NaN or whatever) and then when you're computing ADEV, if a data triplet

Re: [time-nuts] suitable statistics for measurements with gaps

Hoi Jim, On Fri, 22 Apr 2016 06:39:07 -0700 jimlux wrote: > But what about when the observations have gaps? Say you're measuring the > frequency of a spacecraft oscillator, and you can only see it for 8 > hours a day? the description of the frequency variation at a time

Re: [time-nuts] suitable statistics for measurements with gaps

On 04/23/2016 12:10 AM, jimlux wrote: On 4/22/16 12:41 PM, Hal Murray wrote: jim...@earthlink.net said: But what about when the observations have gaps? Say you're measuring the frequency of a spacecraft oscillator, and you can only see it for 8 hours a day? One interesting question...

Re: [time-nuts] suitable statistics for measurements with gaps

Hi Jim, On 04/22/2016 03:39 PM, jimlux wrote: All woodpecker kidding aside, this brings up an interesting question. For most of the measures we look at: ADEV and related measures, you're looking at statistics collected essentially continuously (e.g. adjacent sample frequency) at various time

Re: [time-nuts] suitable statistics for measurements with gaps

On 4/22/16 12:41 PM, Hal Murray wrote: jim...@earthlink.net said: But what about when the observations have gaps? Say you're measuring the frequency of a spacecraft oscillator, and you can only see it for 8 hours a day? One interesting question... Can you match up the cycles after the gap?

Re: [time-nuts] suitable statistics for measurements with gaps

jim...@earthlink.net said: > But what about when the observations have gaps? Say you're measuring the > frequency of a spacecraft oscillator, and you can only see it for 8 hours a > day? One interesting question... Can you match up the cycles after the gap? Is your clock stable enough or do

Re: [time-nuts] suitable statistics for measurements with gaps

In message <60f3d927-124c-aeb6-8591-81206616f...@earthlink.net>, jimlux writes: >But what about when the observations have gaps? Say you're measuring the >frequency of a spacecraft oscillator, and you can only see it for 8 >hours a day? That will still allow you to calculate

Re: [time-nuts] suitable statistics for measurements with gaps

I would think the major difficulty of the scenario you outline would be the periodicity of the measurements coinciding with whatever environmental differences impact the device under test during the measurement window. If you get to see the oscillator the *same* 8 hours every day, are those

[time-nuts] suitable statistics for measurements with gaps

All woodpecker kidding aside, this brings up an interesting question. For most of the measures we look at: ADEV and related measures, you're looking at statistics collected essentially continuously (e.g. adjacent sample frequency) at various time offsets. But what about when the observations