[teqc] qc of L5 for GPS and Galileo

Ambrogio Maria Manzino ambrogio.manzino at polito.it
Tue Aug 26 04:08:31 MDT 2008


Dear Lou,
how do you think abuout  "Andrew Simsky" method, to evaluate phase multipath for three frequency - phase signals?
http://www.insidegnss.com/pdf/IGM-0806-038-041.pdf
With best regards,
Ambrogio

----- Original Message ----- 
From: "Lou Estey" <lou at unavco.org>
To: "teqc support" <teqc at ls.unavco.org>
Sent: Wednesday, August 13, 2008 5:46 PM
Subject: [teqc] qc of L5 for GPS and Galileo


> All,
> 
> GPS L5 is coming -- launch of GPS Block IIRM-7/IIR-20M with an
> L5 demonstration signal (1176.45 MHz) is still scheduled for
> later in 2008 and then multiple launches of GPS Block IIF with
> L5 is still scheduled for 2009 in order to meet the ITU
> deadline for the L5 allocation by 26 Aug 2009 -- and prototype
> Galileo "L5" (E5a, also at 1176.45 MHz) has been transmitting
> for a while now.  Septentrio asked me to update teqc to read
> their new GNSS SBF messages with includes Galileo data, and they
> kindly provided a 1-s sample tracking using their AsteRx2 receiver
> of GPS and GIOVE-B which includes (RINEX 2.11-wise) GPS L1 and C1
> and Galileo L1, L5, C1, and C5 (see table in 10.1.1 of
> http://www.aiub.unibe.ch/download/rinex/rinex211.txt ).
> 
> This is still preliminary for teqc, but the general idea for a qc
> modification that includes L5 observables is to have in the ASCII
> time plot:
> 
> E31|ssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss|E31
> 
> -- 's' meaning L1, C1, L5, and C5 observables were collected --
> 
> Moving average MP1      : 0.357422 m
> Moving average MP2      : 0.000000 m
> Moving average MP5      : 0.067547 m
> 
> (no mp1 or mp2 could be computed with the supplied data due since
> there was no tracking on the L2-carrier)
> 
>       first epoch    last epoch    hrs   dt  #expt  #have   %   mp1   mp2   mp5 o/slps
> SUM 08  8  5 18:00 08  8  5 18:15 .2506   1   8118      0   0  0.36  0.00  0.07      0
> 
> -- and with +ssv:
> 
> Individual SV Summaries:
>      id #expt #have  #del   %   mp1   mp21   mp5  o/slp
> SSV   2     0     0     0   0  0.00  0.00  0.00      0
> SSV   5   902     0   902   0  0.00  0.00  0.00      0
> SSV   6     0     0     0   0  0.00  0.00  0.00      0
> SSV  10   902     0   902   0  0.00  0.00  0.00      0
> SSV  12     0     0     0   0  0.00  0.00  0.00      0
> SSV  16   902     0   902   0  0.00  0.00  0.00      0
> SSV  21   902     0   902   0  0.00  0.00  0.00      0
> SSV  23   902     0   902   0  0.00  0.00  0.00      0
> SSV  24   902     0   902   0  0.00  0.00  0.00      0
> SSV  29   902     0   902   0  0.00  0.00  0.00      0
> SSV  30   902     0   902   0  0.00  0.00  0.00      0
> SSV  31   902     0   902   0  0.00  0.00  0.00      0
> SSV E31     0     0     0   0  0.36  0.00  0.07      0
> 
> -- assuming I did the mp1 and mp5 right on the GIOVE-B data.
> 
> Since this will obviously change things like the SUM (and new alternate
> summary line, SWN) and the individual SV summary lines, this can't yet
> be a default behaviour for teqc.  Just as with early L2C tracking where
> I included a "+C2" option to kick that into gear in teqc, I'm considering
> adding a "+L5" option to allow the above "mp5" additions and a few other
> things in the qc related to L5 to be output.
> 
> Comments?  Questions?
> 
> --lou
> 
> p.s. I'm only around for another hour or so today, and then out of the
> office until the latter part of next week, and then gone again until
> Sept 2 or 3.
> 
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 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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