[teqc] GLONAS SV ID 255 filter?

Lou Estey lou at unavco.org
Thu Jan 11 09:08:45 MST 2018


Isaac,

Did teqc generate the RINEX file with 'R255', as shown below?

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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

"If the universe is the answer, what is the question?"
                                                -- Leon Lederman
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On 11-Jan-18 09:04 AM, Isaac Hoyas Ester wrote:
> Hello,
> 
> I have been trying to find instructions on how to use TEQC to filter out GLONASS observations with slot ID 255, this may happen because the 
> Ublox receiver that I'm trying to convert raw data from may be able to decode data from a GLONASS SV before it can identify the SV. When 
> this occurs UBX-RXM-SFRBX messages will be issued with an svId of 255 to indicate "unknown".
> 
> Here you have a RINEX observation epoch example showing a GLONASS SV with slot ID 255:
> 
> 17 12 22 22 9 6.9940000 0 17G24G29G25G31G12G32R08R09G04G02R255R10
> R19R20G14R18R16
> 117546916.037 6 22368465.110 40.000 -3572.229
> 96793892.692 8 18419251.051 49.000 865.332
> 98761291.535 8 18793667.599 48.000 -530.120
> 108401382.976 7 20628091.097 44.000 2600.400
> 106915274.094 7 20345288.104 46.000 -2394.498
> 110635793.326 6 21053314.460 40.000 -2140.314
> 117523692.247 5 21946725.423 34.000 -1896.710
> 94773244.591 7 17748010.382 46.000 1014.036
> 114537730.343 5 21795793.846 34.000 2758.222
> 113756995.669 7 21647232.534 42.000 -1099.824
> 108373678.553 7 20316337.163 43.000 4082.983
> 111241066.317 6 20868543.848 36.000 3423.625
> 93974283.751 7 17567507.189 45.000 580.784
> 108749564.993 6 20336700.814 37.000 4121.685
> 108824714.448 6 20708650.009 40.000 -573.414
> 104444377.513 6 19565957.947 40.000 -3400.356
> 102423064.459 6 19173840.114 40.000 -2393.646
> 
> Many thanks for your support.
> 
> Best Regards
> 
> Isaac



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