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Re: gpsrinex - smaller than 1s epoch interval
From: |
Greg Troxel |
Subject: |
Re: gpsrinex - smaller than 1s epoch interval |
Date: |
Tue, 19 May 2020 10:50:13 -0400 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/26.3 (berkeley-unix) |
"Gary E. Miller" <address@hidden> writes:
>> so i set up gpsd with rinex to output an epoch every 1s. For my
>> application, pretty fast moving, it would be great to output data
>> more often then every 1s, say every 100ms. The Gps, a u-blox F9, is
>> certainly fast enough, to acquire enough raw data - 40hz are the max
>> for HW.
>
> I know of no service that can use RINEX data to faster than 1 HZ.
> Most only use one fix every 30 seconds.
>
> What consumer do you have of RINEX that can use faster than 1Hz data?
A fair question, but:
NRCAN PPP in kinematic mode will produce positions at 1s intervals
it seems conceptually sensible to do kinematic PPP at 0.1s
as for float, I would avoid that to stay away from possible rounding
issues. Since you found RINEX talks about ms, that sounds sensible if
we go there at all.
Felix could try to
set receiver to 40 Hz or something via commands
capture raw ubx data w/o using gpsd
process that at NRCAN PPP and see if it works
and if so, I'd that's evidence this is useful.
- gpsrinex - smaller than 1s epoch interval, felix, 2020/05/19
- Re: gpsrinex - smaller than 1s epoch interval, Gerry Creager - NOAA Affiliate, 2020/05/20
- Re: gpsrinex - smaller than 1s epoch interval, Gerry Creager - NOAA Affiliate, 2020/05/20
- Re: gpsrinex - smaller than 1s epoch interval, Gary E. Miller, 2020/05/20
- Re: gpsrinex - smaller than 1s epoch interval, Gerry Creager - NOAA Affiliate, 2020/05/20