Someone asked a few weeks ago about a tool to compute Allan deviation. There are quite a few that I use, but here's a write-up about a simple windows command line tool that I use.
http://www.leapsecond.com/tools/adev1.htm With one day's worth of data from a cesium standard and an HP 53131A the tool does this for you: C:\tvb> adev1 < log23202.txt 1 ** Sampling period: 1 s ** Phase data scale factor: 1.000e+000 ** Total phase samples: 86400 1 tau, 6.0265e-010 adev(n=86398), 2 tau, 2.8217e-010 adev(n=43198), 5 tau, 1.0314e-010 adev(n=17278), 10 tau, 5.3691e-011 adev(n=8638), 20 tau, 2.6617e-011 adev(n=4318), 50 tau, 1.1052e-011 adev(n=1726), 100 tau, 5.6781e-012 adev(n=862), 200 tau, 3.0238e-012 adev(n=430), 500 tau, 1.3804e-012 adev(n=171), 1000 tau, 8.0011e-013 adev(n=85), 2000 tau, 6.0141e-013 adev(n=42), 5000 tau, 2.3656e-013 adev(n=16), 10000 tau, 1.4069e-013 adev(n=7), 20000 tau, 8.3392e-014 adev(n=3), If you have questions or trouble with it contact me off-list. /tvb http://www.leapsecond.com/time-nuts.htm _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
