[IGSMAIL-4472]: Re: [IGSMAIL-4465]: GLONASS tracking alarm

[Richard Langley]

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IGS Electronic Mail      25 Jun 06:30:51 PDT 2003      Message Number 4472
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Author: Richard Langley

GLONASS 08/08 (784) was declared unusable by the CSIC on 20 June at 04:31 MT
and was declared operational once again on 23 June at 21:40 MT. Was the code
and phase data from this satellite actually usable during this period?

-- Richard Langley

On Mon, 23 Jun 2003, Stefan Schaer wrote:

>******************************************************************************
>IGS Electronic Mail      23 Jun 03:36:47 PDT 2003      Message Number 4465
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>
>Author: Stefan Schaer
>
>
>Dear colleagues,
>
>The GLONASS tracking problems reached in the course of D171 a point
>which is more than alarming. We had to stop orbit determination with
>respect to an active GLONASS satellite just because of a lack of IGLOS
>tracking data! Only five IGLOS stations,
>
>  dwh1,
>  khaj,
>  os0g,
>  spt0,
>  zimj,
>
>are currently able to provide R08 tracking data. All other IGLOS
>stations,
>
>  bogi,
>  cagz,
>  conz,
>  darr,
>  davr,
>  drej,
>  ffmj,
>  godz,
>  gope,
>  helj,
>  hert,
>  hueg,
>  irkj,
>  joz2,
>  kr0g,
>  lhaz,
>  leij,
>  mat1,
>  metz,
>  mr6g,
>  mtbg,
>  mtka,
>  ohi3,
>  reyz,
>  thu2,
>  titz,
>  unb1,
>  wroc,
>  wtzj,
>  wtzz,
>  yarr,
>
>seem to simply ignore this transmitting GLONASS satellite:
>
>  http://www.aiub.unibe.ch/download/igsdata/r08_alarm.txt
>
>
>Best regards,
>
>Stefan
>
>


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 Richard B. Langley                            E-mail: lang at unb.ca
 Geodetic Research Laboratory                  Web: http://www.unb.ca/GGE/
 Dept. of Geodesy and Geomatics Engineering    Phone:    +1 506 453-5142
 University of New Brunswick                   Fax:      +1 506 453-4943
 Fredericton, N.B., Canada  E3B 5A3
     Fredericton?  Where's that?  See: http://www.city.fredericton.nb.ca/
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