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| File Information |
| Description |
allan.m calculates the standard Allan deviation (ADEV) of a time domain signal. It is intended for stability analysis of frequency data (although the analysis can be applied to other types of data). Fractional frequency or phase data sets with sample rate or time stamp information are handled.
Note: for overlapping and modified Allan deviation analysis, please see the files allan_modified.m (ID: #26637) and allan_overlap.m (ID: #26441). |
| Acknowledgements |
This submission has inspired the following:
allan v1.71, allan_overlap, allan_modified
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| MATLAB release |
MATLAB 7.1.0 (R14SP3)
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| Other requirements |
Installation of dsplot.m (File Exchange ID #15850) is recommended but not required. |
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| Updates |
| 16 May 2007 |
v1.5: added errors bars, MAD calculation for outlier detection. misc bug fixes (see comments) |
| 13 May 2008 |
-fix bug in regular data calc for high-rate data
-fix bug in timestamp data calc for large starting gap
See code comments for details |
| 11 Feb 2009 |
added loglog plot option. Included test data in .mat file. |
| 19 Jan 2010 |
v1.8: Vectorized code for significant performance enhancement. |
| 21 Jan 2010 |
v1.82: performance enhancement; code/comments cleanup |
| 09 Feb 2010 |
handles phase data; error checking; asst. bugfixes |
| 10 Feb 2010 |
Description typo fix |
| 04 Apr 2010 |
minor bugfixes, data consistency checking updated |
| 18 Oct 2010 |
v2.14: updates to plotting, default values |
| 21 Oct 2010 |
v2.16 fixed some issues related to plotting |
| 23 Oct 2010 |
v2.20 consistent behaviour for all allan_x.m functions. |
| 03 Nov 2010 |
v2.22 improve tau handling; plotting bugfix |
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