Subject: [IGSREPORT-161] CODE/AIUB analysis report (week 0684)
From: MARKUS ROTHACHER
Date: 5 MAR 1993 11:02:50

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IGS Electronic Report      5-MAR-1993 11:02:50       Message Number 161
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From:	MARKUS ROTHACHER
Subj:	CODE/AIUB analysis report (week 0684)
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CODE ANALYSIS REPORT GPS WEEK 0684 (DAYS 045-051, DATES 14-02-93 - 20-02-93)
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Submitted by: Astronomical Institute, University of Berne, Switzerland
 
FILES SENT TO CDDIS:
-----------------------------------------------------------------------------
COD06847.SUM           THIS TEXT FILE
COD06847.ERP           EARTH ROTATION PARAMETERS FOR GPS WEEK 0684
COD0684N.EPH           GPS EPHEMERIDES FOR GPS WEEK 0684, SP3 FORMAT (N=0..6)
-----------------------------------------------------------------------------
 
THREE DAY SOLUTION STATISTICS:
------------------------------------------------------
MIDDLE DAY   FILES  OBSERVATIONS  PARAMETERS  RMS (MM)
------------------------------------------------------
 45          80     84460         3116        4.0
 46          80     85664         3066        4.0
 47          78     86043         3029        3.8
 48          78     89111         3094        3.7 
 49          73     87248         3013        3.8
 50          76     81849         2983        4.1
 51          72     81849         2983        4.1
------------------------------------------------------
 
ORBIT REPEATABILITY (CM) FOR PRN: (>X = VALUE > X METERS)
-------------------------------------------------------------------
     01 02 03 11 12 13 14 15 16 17 18 19 20 21 23 24 25 26 27 28 29
-------------------------------------------------------------------
 45  18 66 16 20 16 15 31 31 31 32 19 20 88 33 10 32 21 17 23 26 34
 46  20 53 19 21 18 14 32 33 32 31 19 18 71 39 20 29 18 19 22 32 36
 47  24 50 19 21 17 17 40 32 37 35 20 21 80 42 36 32 20 24 20 27 47
 48  25 >1 20 20 11 17 41 33 42 35 22 21 69 42 48 36 16 26 22 25 52
 49  20 >1 22 18 10 14 33 31 43 31 18 17 65 47 48 29 17 21 20 25 41
 50  23 47 18 22 17 13 32 27 43 27 16 15 69 47 16 28 27 18 17 30 39
 51  25 55 19 25 27 17 40 31 43 35 26 27 65 45 17 29 27 23 25 43 51
-------------------------------------------------------------------
 
STATION SUMMARY:
-------------------------------------------------------------------------------
    GRAZ  MADR* METS  TROM* DRAO  KOKB* RCM2* KOUR  MCMU  TAIW            TOTAL
     HERS  MASP  NYAL  WETT* FAIR* PIET  STJO  SANT  PAMA  USUD
      KOSG* MATE  ONSA* ALGO* GOLD* QUIN  YELL* TIDB* YAR1*
-------------------------------------------------------------------------------
 45   XXX   XXX   X-X   XXX   XXX   XXX   XXX   XXX   XXX   XX            28/29
 46   XXX   XXX   X-X   XXX   XXX   XXX   XXX   XXX   XXX   XX            28/29
 47   XXX   XXX   XXX   XXX   XXX   XXX   XXX   XXX   --X   XX            27/29
 48   XXX   XXX   XXX   XXX   XXX   XXX   XXX   XX-   X-X   XX            27/29
 49   XXX   XXX   XXX   XXX   XXX   XXX   XXX   XXX   X-X   XX            28/29
 50   XXX   XXX   XXX   XXX   XXX   XX-   XXX   XX-   XXX   XX            27/29
 51   XX-   XXX   X-X   XXX   XXX   XX-   XXX   XX-   --X   XX            24/29
-------------------------------------------------------------------------------
 
REMARKS: 
MIDDLE DAYS 045-048: FOR SATELLITE 20 ONLY MIDDLE 30 HOURS USED
MIDDLE DAYS 050-051: FOR SATELLITE  2 ONLY MIDDLE 30 HOURS USED

DAY 051: FROM 17:00 HOURS AS WAS TURNED ON! DATA FROM AS AFFECTED SATELLITES 
         FROM THE FOLLOWING STATIONS WERE REMOVED: YELL, TROM, MATE.

         FROM THE OTHER SITES ALL DATA WAS TREATED SUCCESSFULLY I.E.: THE 
         UPDATED ROGUEs SEEM TO WORK FINE UNDER AS CONDITIONS!!

         IT SEEMS THAT HIGH IONOSPHERIC ACTIVITY INCREASES THE NOISE OF THE
         CROSS-CORRELATED OBSERVATIONS (AS) CONSIDERABLY. THIS PROBABLY 
         EXPLAINS WHY WE HAD TO REMOVE THE DATA FROM YELLOWKNIFE AND TROMSOE.