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Re: BUG: ubxtool enable/disable RAWX fails
From: |
John Ackermann N8UR |
Subject: |
Re: BUG: ubxtool enable/disable RAWX fails |
Date: |
Tue, 28 Apr 2020 19:24:44 -0400 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.4.1 |
On 4/28/20 5:07 PM, Gary E. Miller wrote:
> And here is the big one:
>
> Note the rcvTow: 245122.993. NRCan wants measurements on the top of
> the second. So this will not work with NRCan. This has been known
> for a while. No known workaround.
>
> All good RINEX files we have tested have rcvTow very close to the top
> of the second. This have been much discussed recently here.
As mentioned, I've been in touch with one of the NRCan people and I
raised the question about timetags with him. Here's his reply:*
"
I'm not sure if this is really an issue. Many receivers output
non-integer time tags. This is taken into consideration when computing
the signal's time of transmission. As long as the measurements are
consistent with the time tag, everything usually works fine.
"
So it may be that the uBx measurements aren't consistent with the time
tag, but the fractional part of the timetag isn't in itself a problem.
On 4/28/20 3:13 PM, Gary E. Miller wrote:
> So, beyond the known bad epoch, any other problem would have to be in
> the drive_ubx.c decode of the new L2 signals.
But the problem occurs with the single-freq M8P, so while it may be
something changed in the RAWX message format, it's not (solely) related
to L2.
John
* I'm not posting his name or contact info because it's been a private
email exchange and I know some of these folks get inundated with help
requests and try to keep a low profile.
- BUG: ubxtool enable/disable RAWX fails, John Ackermann N8UR, 2020/04/28
- Re: BUG: ubxtool enable/disable RAWX fails, Gary E. Miller, 2020/04/28
- Re: BUG: ubxtool enable/disable RAWX fails, John Ackermann N8UR, 2020/04/28
- Re: BUG: ubxtool enable/disable RAWX fails, Gary E. Miller, 2020/04/28
- Re: BUG: ubxtool enable/disable RAWX fails, John Ackermann N8UR, 2020/04/28
- Re: BUG: ubxtool enable/disable RAWX fails, Gary E. Miller, 2020/04/28
- Re: BUG: ubxtool enable/disable RAWX fails, John Ackermann N8UR, 2020/04/28
- Re: BUG: ubxtool enable/disable RAWX fails, Gary E. Miller, 2020/04/28
- Re: BUG: ubxtool enable/disable RAWX fails,
John Ackermann N8UR <=
- Re: BUG: ubxtool enable/disable RAWX fails, Gary E. Miller, 2020/04/28