Hi Bruce, the PRS-10 datasheet is pretty smart in not showing the data below 10s through, it would make their >10s performance not shine as much. There certainly could not be any measurement reason for not showing <10s ADEV. As someone has mentioned, they also used a very bad GPS receiver as a reference which makes their ADEV look spectacular against the GPS ADEV. It is possible that this plot is pre-SA-disabled, but then should they not update their website with more recent data? I guess one could also argue that even if you use a bad GPS the unit will still generate a good ADEV above 10s intervals and that is what they are trying to show. It's all in the specmanship. bye, Said In a message dated 2/25/2009 23:04:54 Pacific Standard Time, [email protected] writes:
That isnt a great advantage in this application given that the contribution of the ionosphere to the VLBI receiver output signal phase noise is around 8E-11 @ 10s at 50MHz. Typically in VLBI integration times op up to 10,000 seconds or more are used. Integration times shorter than 100 sec are not usually of much interest. Bruce _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
