[teqc] G00 appearing in RINEX from Trimble NetR9 .T02 files

Lou Estey lou at unavco.org
Thu May 27 19:57:23 MDT 2010


hi Simon,

A NetR9, eh?  Well, a .t02 from a NetR9 is probably the same as from
a NetR8, but there are always fun, new things with new receivers and
their firmware.  Best to send me (not entire the teqc list) the .t02
file and I'll take a look at the .tgd file that I get from it.  (Fun
to be at the bleeding edge, right?)

cheers,
--lou

> I'm hoping someone can help with some G00 records that are appearing in 
> a RINEX files....
> 
>  From a Trimble NetR9 (firmware 4.15) .T02 data file I used the 
> following to create a RINEX file
> 
> runpkr00 -g -d  T02file TGDfile
> 
> and then with teqc (v 2010Mar17)
> 
> teqc -week $gpsweek -tr d  -O.obs "C1L1S1P1C2L2S2P2" -O.int 30 -O.rt 
> "Trimble    NetR9" TGDfile > RNXfile
> 
> The issue I'm having is that for some epochs the last vehicle number is 
> being interpreted as "G00" (and there are no related observables for G00 
> included in the RINEX file)
> 
> eg:
>  10  5 24  0  0  0.0000000  0 18R15G27R24G10G20G12G04G17R23R13R08G02
>                                 R14G09G28R07R17G00
> [after this would follow 17 sets of observables]
> 
> In the above example G00 should have been R01 (I think...), however it 
> is not always R01 that gets misinterpreted, but it is always the last SV 
> in the list and I've only seen it happen to GLONASS vehicles (Rxx).
> 
> As an added complication; interestingly for some epochs I will get a 
> message like:
>  "! Notice ! duplicate SV R17 @ 2010 May 24 00:12:30.000 being 
> eliminated (input = R9T11440.10.tgd)"
> When this happens the final SV is not interpreted at all.
> 
> This gives, for example:
>  10  5 24  0 12 30.0000000  0 16R15G27R24G10G20G12G04G17R23R13R08G02
>                                 R14G09G28R17
> 
> When I believe it should be:
>  10  5 24  0 12 30.0000000  0 17R15G27R24G10G20G12G04G17R23R13R08G02
>                                 R14G09G28R17R01
> 
> 
> Phew!
> 
> Any ideas?  I'm presuming the T02 files are the same as a T02 from a NetR8?
> 
> Thanks in advance,
> 
> Simon
> 
> 
> ------------------------------------------------
> Simon Edwards
> Geodetic Specialist
> GNS Science - Te Pu Ao,
> 1 Fairway Drive, PO Box 30368, Lower Hutt, New Zealand
> +64 4 570 4744
> s.edwards at gns.cri.nz    
> www.geonet.org.nz
> www.gns.cri.nz
> 
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