[teqc] Query

Robert Khachikyan robertk at jpl.nasa.gov
Fri Oct 5 16:24:28 MDT 2018


Hi Rui,

Our solutions use ITRF14 from 2002 onwards. I will ensure the correct 
heading is provided. Thank you.


Just a FYI to the mailing list, if anyone has any APPS related 
questions/concerns, drop us an email at appshelp at gdgps.net and we'll 
gladly respond each inquiry. Thank you.

Best Regards,
--Robert



On 10/4/18 1:19 PM, Rui Fernandes wrote:
>
> Dear Rob,
>
>     The header of the summary file using the APPS shows that the 
> solution is still in ITRF08. So, it is already in ITRF14? Since when?
>
>
>     Thanks,
>
>         Rui
>
>
> On 04/10/18 19:22, Robert Khachikyan wrote:
>> My wishful thinking resulted in a typo for ITRF "18".
>>
>> I should clarify that most JPL clocks and orbits are available in ITRF14.
>>
>> Apologies for the confusion.
>>
>> Regards,
>> --Robert
>>
>>
>> On 10/04/2018 10:19 AM, Robert Khachikyan wrote:
>>> Dear Javier,
>>>
>>> The JPL clocks and orbits are now mostly available for ITRF18. 
>>> However, this is data driven.
>>>
>>> What date range of your data you are PPP-ing?
>>>
>>> Regards,
>>> --Robert
>>>
>>>
>>> On 10/04/2018 09:37 AM, Javier Jovani Mendez Ramirez wrote:
>>>>
>>>> Good morning from
>>>>
>>>>
>>>> Engineers is that I have the following doubt and I ask the favor if 
>>>> you can explain me,
>>>>
>>>>
>>>> It turns out that by construction I like to send Rinex files of 
>>>> positioning that we do to two centers that provide a service called 
>>>> PPP - Precise Point Positioning. These centers are the natural 
>>>> resources office of Canada and the JPL laboratory of NASA.
>>>>
>>>>
>>>> I do this to compare the coordinates thrown by these centers with 
>>>> the coordinates that give me the adjustments using as a base, the 
>>>> stations of continuous operation of the IGAC
>>>>
>>>>
>>>> I did this because, from my analysis, the coordinates were 
>>>> "compatible", that is, they were all referred to the same reference 
>>>> system, ITRF08 measurement time
>>>>
>>>>
>>>> From a time here, when I send a rinex file to NASA, he reports me 
>>>> the coordinates in ITRF 08 measurement time, when I send them to 
>>>> the Canadian office he sends them to me in ITRF14 measurement time 
>>>> and when I download the certifications of IGAC's continuous 
>>>> operation stations are given in ITRF14.
>>>>
>>>>
>>>> The doubt that assails me is. What is the reference system that 
>>>> uses the GPS system by default? How do I change the reference 
>>>> system of the GPS system? Are the ITRF updates taken automatically 
>>>> by the GPS system?
>>>>
>>>>
>>>> I will be very grateful for the collaboration you can give me
>>>>
>>>>
>>>> Sincerely
>>>>
>>>>
>>>> Javier Méndez
>>>>
>>>> Bogota Colombia
>>>>
>>>>
>>>>
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>>>
>>>
>>>
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>>
>>
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> -- 
>
>
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