[teqc] GLONAS SV ID 255 filter?

Moore, Angelyn W (335N) Angelyn.W.Moore at jpl.nasa.gov
Wed Jan 31 12:23:20 MST 2018

Have plowed this ground before.



On 1/31/18 11:01 AM, Robert Khachikyan wrote:
> Hi Lou,
> This may be in the same umbrella of reports, but I have a similar 
> situation when trying to remove a GLONASS satellite that is not within 
> the range 1-24.
> For instance, IGS station RAMO's daily 30-second RINEX file 
> ramo3600.17o.Z downloaded from CDDIS has R26 observed. When issuing 
> 'teqc -R' to remove all GLONASS satellites, teqc throws an error of 
> invalid slot number.
> When removing it exclusively, "teqc -R26 -R", this works as expected.
> If your fix will cover this report, I'll wait. Otherwise, is it 
> possible for teqc not to do any quality checks on constellations when 
> my intent is to remove them altogether?
> Thanks,
> --Robert
> On 01/12/2018 07:49 AM, Lou Estey wrote:
>> hi Isaac,
>> I'll try to get a fix to you as soon as possible for this.  (Now that 
>> I know that
>> u-blox firmware might put invalid SV IDs into UBX RMX-RAWX, I'm not 
>> going to trust
>> any ID value without validating it for the given constellation, so 
>> the general fix
>> needed in the two functions for reading UBX RMX-RAWX is going to 
>> require a little
>> thought).
>> Your use of teqc with UBX on this base station will probably provide 
>> pretty robust
>> testing.  Just report anything else from teqc's parsing of UBX from 
>> it that doesn't
>> seem right.
>> cheers,
>> --lou
>> On 12-Jan-18 08:33 AM, Isaac Hoyas Ester wrote:
>>> Hi Lou,
>>> That sounds great, if for whatever reason, now or in the future, you 
>>> need ublox raw data let me know, I have a permanent base station 
>>> (Ublox NEO-M8T receiver) so I can provide access to large quantities 
>>> of ubx formatted files (1Hz by now).
>>> Isaac
>>> A 12.01.2018 04:20 PM, Lou Estey escrigué:
>>>> My plan is to skip all SV information for any SV id in UBX RMX-RAWX 
>>>> messages
>>>> which is outside of the accepted norm for that constellation, i.e. 
>>>> any such
>>>> case would automatically be filtered out.  Up to this point, from 
>>>> limited
>>>> teqc-user feedback on UBX RMX-RAWX, there had not been any case of 
>>>> SV ids
>>>> outside of the accepted norm for any constellation.
>>>> --lou
>>>> On 12-Jan-18 08:11 AM, Isaac Hoyas Ester wrote:
>>>>> Hi Lou, Excelent, I will certainly follow the instructions you are 
>>>>> providing in the previous post and see how everything works out (I 
>>>>> also have to check what happens with RTKLib behaviour) May I ask 
>>>>> what rationale are you planning to implement in TEQC regarding 
>>>>> R255s observations, personally I would like the option to 
>>>>> completely eliminate (filter out) all those instances given the 
>>>>> fact (please correct me if I'm wrong) there is no way to reliably 
>>>>> assign a "proper" (is it 1 to 24?) slot number to those 
>>>>> observations and this seems to be causing post processing issues 
>>>>> within RTKLib Many thanks Isaac --- 
>>>>> ===================================== Isaac Hoyas Ester Rokubun 
>>>>> S.L. MediaTIC Bldg, 2nd floor Roc Boronat 117 08018 Barcelona. 
>>>>> Spain http://www.rokubun.cat e-mail:isaac.hoyas.ester at rokubun.cat 
>>>>> <mailto:isaac.hoyas.ester at rokubun.cat> phone:+34 935 511 490 
>>>>> skype:isaac_h_e. =====================================
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