In a message dated 12/14/2006 12:00:36 Pacific Standard Time, [EMAIL PROTECTED] writes:
> Hello Said, > > from my own experience in detecting and removal of outliers i can asure > you that it is a challenging and ambitious task in statistical math. I > fear you expect too much from a receiver's TRAIM firmware to compute the > necessary statistic math on a pulse to pulse base. Nevertheless you can > do it on your own if the microcontroller that compares the LO to the > GPS's 1pps has enough RAM and processing power. I second Ulrich's comments. A certain amount of sanity checking on your end is worthwhile. You can get GPS 1PPS glitches, OCXO glitches, and TIC glitches. No need to decide which is which; just do outlier detection and you solve them all. The beauty of a GPSDO is that you're only changing the DAC every few minutes so there's plenty of time to look carefully at the quality of your 1 Hz samples before you commit the DAC update. It would be a more difficult problem if you needed to update the DAC in realtime. /tvb Hi guys, "enough RAM" is a keyword here! Doing outlier detection using i.e. median filters etc seems prudent... Part of my question was if anyone had any experience with setting the TRAIM limits really tight, to say +-20 or +-50ns and let TRAIM do the work. I rather have no pulses than bad pulses. Thanks, Said _______________________________________________ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts