[time-nuts] Re: Current-day GPS timing receivers

[Poul-Henning Kamp]

--------
Greg Troxel writes:

> Read this paper
>
>   https://hamsci.org/sites/default/files/publications/2020_TAPR_DCC/N8UR_GPS_Evaluation_August2020.pdf

The "multistep" jitter seen on the PPS plots is a deliberately induced high frequency jitter.

The effect is to "rough up" long hanging bridges so they become oscillator wander in GPSDOs.

Pretty analogous to Floyd-Steinberg dithering an image really.

I have tried to implement the same basic idea with both Oncore and
PRS10, by sending commands via the serial port to move the PPS pulse
around but got mediocre results.

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