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From: | Gerry Creager - NOAA Affiliate |
Subject: | Re: gpsrinex - smaller than 1s epoch interval |
Date: | Wed, 20 May 2020 15:58:07 +0000 |
Yo felix!
On Mon, 18 May 2020 22:19:03 +0200
felix <address@hidden> wrote:
> 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?
> In the the current 3.20 code the --interval seems to be clipped to 1,
> as internally time is kept as an integer in seconds:
Yup.
> Would it require a lot of changes to track time internally not in
> seconds but in nanoseconds,
Conflating two issues. Easy to make the interval in seconds, as a
float. Very few GPS can work faster than 25 Hz. nanoseconds is
pointless.
> Are there any fundamental
> reasons that make this hard or impossible?
Nope. But with no known use, not worth doing.
RGDS
GARY
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