-------- In message <[email protected]>, Bob kb8tq writes:
> The uBlox F9P (navigation / survey) device does not run SBAS. Their claim > is that things work better (for location) without it….. yikes …. And they may well be correct about it. The optimal position-hold position is the one which gives the smallest residuals given the signal received. Multipathing can easily make the optimal time-position (ie: smallest time residual) different from the optimal position-position (ie: smallest least-square-XYZ residual). I played a lot with it back when I did my "RAGA"/"SNEAK" experiments[1] and unless you _also_ use your augmentation while in pos-hold, I dont think it is a good idea to use it get into pos-hold. Poul-Henning [1] see: http://phk.freebsd.dk/raga/sneak/ -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [email protected] | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
