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Re: Satellites show up multiple times
From: |
Gary E. Miller |
Subject: |
Re: Satellites show up multiple times |
Date: |
Wed, 5 Aug 2020 13:06:24 -0700 |
Yo Andreas!
On Wed, 5 Aug 2020 09:29:23 +0200
Andreas B <panden@gmail.com> wrote:
> > I find "3" strange, vs something like L1/L2.
Much more complicated than L1/L2. Even L1 has 4 different modulation
schemes.
From gps.h, the gpsd definition of sigid:
/* sigid as defined by u-blox 9, and used here
* GPS: 0 = L1C/A, 3 = L2 CL, 4 = L2 CM
* SBAS: 0 = L1C/A, ? = L5I
* Galileo: 0 = E1 C, 1 = E1 B, 5 = E5 bl, 6 = E5 bQ
* BeiDou: 0 = B1I D1, 1 = B1I D2, 2 = B2I D1, 3 = B2I D2
* QZSS: 0 = L1C/A, 4 = L2 CM, 5 = L2 CL
* GLONASS: 0 = L1 OF, 2 = L2 OF
*
* sigid as defined by NMEA 4.10, NOT used here
* GPS: 1 = L1C/A, 6 = L2 CL, 5 = L2 CM
* Galileo: 7 = E1 C, 7 = E1 B, 2 = E5 bl, 2 = E5 bQ
* BeiDou: 1 = B1|D1, 1 = B1|D2, 3 = B2|D1, 3 = B2|D2
* QZSS: not defined
* GLONASS: 1 = L1 OF, 3 = L2 OF
I used the u-blox definition as it includes more signal types.
> > Keep in mind that Galileo has
> > E5a and E5b. So there really needs to be a "signal" field added.
That is part of the sigid. See above.
RGDS
GARY
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Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
gem@rellim.com Tel:+1 541 382 8588
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