[teqc] status of full qc of Beidou/Compass (and GPS, GLONASS, ...)

Stuart Wier wier at unavco.org
Wed Dec 11 11:06:34 MST 2013


Looks,

It looks like the PDF Tutorial will need a real revision, to be released 
with the new teqc.  I will need your help to get it all OK.

How soon do you plan the release?

Stu

On 12/11/2013 10:34 AM, Lou Estey wrote:
> hi everyone,
>
> This is an update on the full qc of Beidou/Compass data and, more
> generally, the revamp
> of the qc in teqc.  (See also
> http://postal.unavco.org/pipermail/teqc/2013/001587.html )
>
> But, more importantly, this is to give you fair warning of a number of
> changes to the way
> qc from teqc will be in the next official release, for Beidou/Compass
> and all other
> constellations (GPS, GLONASS, Galileo, QZSS, SBAS).
>
> First, I'm providing a limited set of teqc builds for your evaluation
> and testing (teqc
> version 2013Dec11):
>
> at ftp://brick.unavco.org/pub/users/lou
>
> teqc_bc.zip                 -- 32-bit teqc.exe using Borland compiler
> teqc_mingw_32.zip           -- 32-bit teqc.exe using Mingw-32
> teqc_mingw_64.zip           -- 64-bit teqc.exe using Mingw-64
> teqc_Lx86_32s.zip           -- 32-bit Linux statically-linked teqc
> teqc_Lx86_64s.zip           -- 64-bit Linux statically-linked teqc
> teqc_OSX_x86_gcc4.2d_64.zip -- 32-bit OSX teqc
> teqc_Sparc_5.10_64d.zip     -- 64-bit Solaris Sparc teqc
> teqc_Solx86_5.10_64d.zip    -- 64-bit Solaris x86 teqc
> teqc_HPUXcc.zip             -- 32-bit HPUX teqc
>
> Next, at the same ftp pickup area I'm providing a test dataset which is
> 30-second data
> from Perth, Australia, collected with a Trimble NetR9:
>
> test.zip  (7 MB)
>
> The RINEX in this was created using the command:
>
> teqc +all -O.dec 30 +nav tmp.gps,tmp.glo,tmp.sbs,-,tmp.cmp,tmp.qzs *.tgd
>  > tmp.obs
>
> - '+all' is a new option which is equivalent to '+relax +C2 +L5 +L6 +L7
> +L8'
> - the input .tgd data was 1-second data, so '-O.dec 30' just decimates
> it to 30 seconds
> - there were no Galileo navigation messages in the .tgd, so on '+nav' there
>    was no attempt to create 'tmp.gal' which would have held the RINEX
> version
>    of the Galileo navigation messages
>
> Then the qc was done:
>
> teqc +qc +ssv +plot -set_mask 0 tmp.obs
>
> - the optional '+ssv' was included so that you could see the 30-s
> multipath rms
>    for each SV
> - '+plot': this is no longer the default, so if you want to get the
> ASCII 'compact'
>    plot files (now in compact-3 format), this option must be included
> - the optional '-set_mask 0' was used only because the data was quite
> good at
>    low elevations (if this option is excluded, then the elevation mask
> defaults
>    to 10 degrees above the horizon which is equivalent to using
> '-set_mask 10')
>
> The files in test.zip are (with the size in bytes):
>
> -rw-r--r--   165948 Dec 11 15:59 tmp.cmp
> -rw-r--r--   119190 Dec 11 15:59 tmp.gps
> -rw-r--r--    52263 Dec 11 15:59 tmp.qzs
> -rw-r--r--   147656 Dec 11 15:59 tmp.glo
> -rw-r--r--   325816 Dec 11 15:59 tmp.sbs
> -rw-r--r-- 22432724 Dec 11 15:59 tmp.obs
> -rw-r--r--   665289 Dec 11 16:06 tmp.i12
> -rw-r--r--   125907 Dec 11 16:06 tmp.i15
> -rw-r--r--   390245 Dec 11 16:06 tmp.i16
> -rw-r--r--   381555 Dec 11 16:06 tmp.i17
> -rw-r--r--    57205 Dec 11 16:06 tmp.i18
> -rw-r--r--   665289 Dec 11 16:06 tmp.d12
> -rw-r--r--   125907 Dec 11 16:06 tmp.d15
> -rw-r--r--   390245 Dec 11 16:06 tmp.d16
> -rw-r--r--   381475 Dec 11 16:06 tmp.d17
> -rw-r--r--    57107 Dec 11 16:06 tmp.d18
> -rw-r--r--   665289 Dec 11 16:06 tmp.m12
> -rw-r--r--   665289 Dec 11 16:06 tmp.m21
> -rw-r--r--   125907 Dec 11 16:06 tmp.m15
> -rw-r--r--   125907 Dec 11 16:06 tmp.m51
> -rw-r--r--   390245 Dec 11 16:06 tmp.m16
> -rw-r--r--   390245 Dec 11 16:06 tmp.m61
> -rw-r--r--   381475 Dec 11 16:06 tmp.m17
> -rw-r--r--   381475 Dec 11 16:06 tmp.m71
> -rw-r--r--    41713 Dec 11 16:06 tmp.m18
> -rw-r--r--    41713 Dec 11 16:06 tmp.m81
> -rw-r--r--  1096799 Dec 11 16:06 tmp.sn1
> -rw-r--r--   665289 Dec 11 16:06 tmp.sn2
> -rw-r--r--   125907 Dec 11 16:06 tmp.sn5
> -rw-r--r--   390245 Dec 11 16:06 tmp.sn6
> -rw-r--r--   408661 Dec 11 16:06 tmp.sn7
> -rw-r--r--    90227 Dec 11 16:06 tmp.sn8
> -rw-r--r--   987025 Dec 11 16:06 tmp.azi
> -rw-r--r--   987025 Dec 11 16:06 tmp.ele
> -rw-r--r--    69417 Dec 11 16:06 tmp.13S
>
> (Note: test.zip does _not_ contain the 1-sec .tgd data file.)
>
> You will notice there are now many more multipath combinations.  In
> fact, these
> are just a subset of the possible combinations.  In redoing the qc, I
> focused on
> creating multipath combinations relative to the code pseudorange and phase
> values on the main signal of the principal carrier frequency, 'L1' in
> tmp.obs,
> which is:
>
> GPS     L1       @ 1575.42 MHz     (L1P(Y) if present, otherwise L1C/A)
> GLONASS G1       @ 1602+k*9/16 MHz (L1HA is present, otherwise L1SA)
> Galileo E2-L1-E1 @ 1575.42 MHz
> SBAS    L1       @ 1575.42 MHz
> Beidou  B1/E2    @ 1561.098 MHz
> QZSS    L1C/A    @ 1575.42 MHz
>
> So, as a reminder, what used to be called "mp1" is now m12 or mp12, and
> what
> used to be called "mp2" is now m21 or mp21.
>
> There were necessary changes to the qc output to accommodate the new
> GNSS qc.
> First, review the new symbols in `teqc ++sym` for the ASCII time plot.
> Also,
> for example, there is now a new 'SMP' summary line at the end of the
> short qc
> report which should show up if there are more multipath combinations than
> just m12 and m21.  For example in tmp.13S:
>
>        first epoch    last epoch    mp12  mp21  mp15  mp51  mp16  mp61
> mp17  mp71  mp18  mp81
> SMP 13 10  7 00:00 13 10  7 23:59  0.71  0.55  0.61  0.56  0.56  0.34
> 0.60  0.41  1.45  1.42
>
> (Note: the original 'SUM' line remains as it has been with just m12 and m21
> with the old labels.  If there is no L2 data, then these will be filled in
> with '-'.)
>
> Also, the "missing" data section of the full qc report now is done as
> percentages,
> with a separate column for each constellation; in tmp.13S:
>
>                                  |  G  |  R  |  S  |  E  |  C  |  J  |
> % Obs above mask w/ no L1     :   0.0   0.0   0.0   0.0   0.0   0.0
> % Obs above mask w/ no L2     :   3.5   0.1    -     -  100.0   0.3
> % Obs above mask w/ no L5     :  88.7    -  100.0   0.1    -    0.3
> % Obs above mask w/ no L6     :    -     -     -  100.0   0.1   0.3
> % Obs above mask w/ no L7     :    -  100.0    -    0.1   0.1   0.3
> % Obs above mask w/ no L8     :    -     -     -    0.1    -    0.3
>
> % Obs above mask w/ no P1     : 100.0   0.0    -     -     -     -
> % Obs above mask w/ no P2     :   3.9   0.1    -     -     -     -
> % Obs above mask w/ no C1     :   0.0   0.0   0.0   0.0   0.0   0.0
> % Obs above mask w/ no C2     :  64.5   0.0    -     -  100.0   0.3
> % Obs above mask w/ no C5     :  88.7    -  100.0   0.1    -    0.3
> % Obs above mask w/ no C6     :    -     -     -  100.0   0.1   0.3
> % Obs above mask w/ no C7     :    -  100.0    -    0.1   0.1   0.3
> % Obs above mask w/ no C8     :    -     -     -    0.1    -    0.3
>
> These are just some of the changes that have been made.
>
> I encourage anyone interested in full GNSS qc to take a look at all this
> as soon as possible, whether your primary interest is qc of Beidou/Compass
> data or just qc of some other constellation (like GPS).  Remember that this
> is the way qc from teqc is going to be in the next official release.
>
> -------------
>
> Translation: In addition, this interim version of teqc should be able to
> read
> Beidou/Compass navigation messages in the following formats:
>
> Trimble .tgd (record 28)
> Trimble stream (0x55)
> Javad JPS ([CN])
> Septentrio Binary Format (SBF) (message ID 4081)
> BINEX 0x01-05 (see http://binex.unavco.org/binex_record_01.html#01_05)
>
> -------------
>
> Have fun, and let me know how it goes.
>
> cheers,
> --lou
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Louis H. Estey, Ph.D.              office:  [+001] 303-381-7456
> UNAVCO, 6350 Nautilus Drive           FAX:  [+001] 303-381-7451
> Boulder, CO  80301-5554            e-mail:  lou  unavco.org
>     WWW:  http://www.unavco.org   http://jules.unavco.org
>
> "If the universe is the answer, what is the question?"
>                                                 -- Leon Lederman
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
>
>
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