[IGSMAIL-5490]: Change in SP3 header comment line / Clock RINEX

[gend at gfz-potsdam.de]

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IGS Electronic Mail      22 Nov 06:54:58 PST 2006      Message Number 5490
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Author: Gerd Gendt

Dear colleagues,

For new launched satellites the rule is to define the sat ant offset
from the mean of existing satellites for that block, and replace later the
value with the first estimate. The history is traced by changing the
WWWW in the name of the ANTEX file.

SP3 comment line:
  To allow a unique tracing of the used satellite offsets (especially in the
  early phase) it was necessry to make a change in the SP3 header comment
  line. Now the full name of the ANTEX file is given there.
  We are using this 'event' to make some other slight formal changes in the
  format. The new format is given below.

Sorry for the inconvenience this change may cause, but we decided to do it now
rather than to stick on a version not so easy to handle.

Clock RINEX:
  In the clock RINEX file the name of the ANTEX file shall be given in the from:
  (see ftp://igscb.jpl.nasa.gov/pub/data/format/rinex_clock.txt).

----|---1|0---|---2|0---|---3|0---|---4|0---|---5|0---|---6|0---|---7|0---|---8|
G Program_Name_____ IGS05_1400                              SYS / PCVS APPLIED
R Program_Name_____ IGS05_1400                              SYS / PCVS APPLIED



Best regards
Gerd Gendt


------------------------------------------------------------------------------
New proposal
    Attention: The order is now ORB: ... CLK: ... !
               (as the data records later are in this order x y z clock)
Comment line in the SP3 file - final version

----|---1|0---|---2|0---|---3|0---|---4|0---|---5|0---|---6|0---|---7|0---|---8|
/* PCV:IGS05_1400 OL/AL:FES2004  NONE     YN ORB:CoN CLK:CoN

   - format: ('/* PCV:',a10,' OL/AL:',2(a8,1x),2a1,' ORB:',a3,' CLK:',a3)
   - Models applied during estimation of orbits
        - PCV  : Antanne model used 
        - OL/AL: Ocean and atmo tide loading models plus CMC flags:
                    OL_MODEL AL_MODEL FF               
             - OL_MODEL: Ocean tide loading model  or  COMBI or NONE
                    COMBI is given if not all AC submissions have used the same
             - AL_MODEL: Atm tide loading model  
                    (e.g. S1S2, or NONE )
             - FF  : two flags to report if CMC is included in the model (Y or 
N)

   - Corrections applied during generation of SP3
        - ORB: CoN if CMC are corrected for applied loading models
               CoM otherwise
        - CLK: CoM or CoN or CMB or N/A;
               CoN if staco are fixed to ITRF during CLK adjustment
               CMB (for Combi) is given if not all AC submissions have used the
------------------------------------------------------------------------------
Examples:
/* PCV:IGS05_1400 OL/AL:FES2004  NONE     Y  ORB:CoN CLK:CoN
/* PCV:IGS05_1400 OL/AL:FES2004  NONE     YN ORB:CoN CLK:CoN
/* PCV:IGS05_1400 OL/AL:FES2004  S1S2     YY ORB:CoN CLK:CoN
------------------------------------------------------------------------------



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*                         Gerd Gendt                                         *
*  _/_/_/  _/_/_/_/_/_/   GeoForschungsZentrum                               *
* _/       _/       _/    Department Geodesy and Remote Sensing              *
* _/ _/_/  _/_/    _/     Telegrafenberg A17                                 *
* _/    _/ _/     _/      D-14473 Potsdam ,  GERMANY                         *
*  _/_/_/  _/    _/_/_/   Phone : ++49 331 288 1114   Fax :++49 331 288 1759 *
*                         E-Mail: gendt at gfz-potsdam.de                       *
* IGS GFZ AC         :    AFTP://ftp.gfz-potsdam.de/pub/igsprod              *
*                         http://www.gfz-potsdam.de/igs                      *
* IGS Analysis Coord.:    AFTP://ftp.gfz-potsdam.de/pub/igsacc               *
*                         http://www.gfz-potsdam.de/igsacc                   *
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