[teqc] FCN of Glonass R17 satellite
lou at unavco.org
Wed Jan 23 13:05:20 MST 2008
Using a couple of MDB files supplied by Giovanni, I'm pretty sure I have
this fixed for both Leica MDB and Topcon TPS/Javad JPS formats. (Giovanni's
TPS file appeared to have other problems, i.e. most records had checksum
errors suggesting it had been collected or transferred incorrectly.)
> Dear Lou,
> I too see the same problem with LEICA MDB format.
> With TPS data
> I get different message.
> ! Warning ! Topcon TPS with possible non-standard message starting
> with [-]
> ! Warning ! Topcon TPS corrupted data or mis-partsing by teqc
> The TOPCON is from a TPSG3_A1 with firmware 3.2
> I only have receivers with firmware 3.2 so I cannot see if this is a
> new or earlier error message.
> Lou Estey wrote:
>> You'll have to send me a sample file or two so I can look at them. Send
>> the files to me, not the teqc list. If this is occurring with both Javad
>> JPS and Leica data (MDB format?), I'd need a sample of both.
>> 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
>>> we use teqc for converting javad and leica raw data files to rinex.
>>> Since glonass satellite R17 is up, we see in the glonass navigation
>>> file no R17 navigation messages due to the fact that teqc rejects all
>>> navigation messages with fcn (frequency channel number) out of the
>>> range of -7 to +24:
>>> ! Notice ! GLONASS: bad frequency #= 255 being rejected (min= -7,
>>> max= 24)
>>> ! Notice ! GLONASS: bad frequency #= 254 being rejected (min= -7,
>>> max= 24)
>>> When we use for example jps2rin, for R17 a fcn of 255 is reported,
>>> but is included in the navigation file.
>>> We have this effect with all data collecting software(s) we use for
>>> javad and also with raw mdb files directly downloaded from the leica
>>> We are now not sure, whether it is a problem related to teqc or the
>>> raw data format of the receivers.
>>> The newest teqc is used:
>>> 2.10 G: GLONASS NAV DATA RINEX
>>> VERSION / TYPE
>>> teqc 2007Jun25 root 20080123 00:24:06UTCPGM / RUN
>>> BY / DATE
>>> Linux 2.4.20-8|Pentium IV|gcc|Linux|486/DX+ COMMENT
>>> teqc 2007Jun25 root 20080122 01:00:00UTCCOMMENT
>>> 2008 1 22 1.201871782541D-06 CORR TO
>>> SYSTEM TIME
>>> 14 LEAP SECONDS
>>> END OF
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