[teqc] upcoming improvements to teqc's qc antenna position calculation

Geoffrey Blewitt gblewitt at unr.edu
Fri Mar 9 13:03:14 MST 2018


Lou

I agree with Richard, accounting for Earth rotation in the ECEF frame IS the Sagnac effect.  Its is also equivalent to computing in the ECI frame (like GIPSY does).

Just hope you are not counting this twice.

Thanks,

- Geoff

> On Mar 9, 2018, at 11:52 AM, Richard Langley <lang at unb.ca> wrote:
> 
> Lou:
> Aren't these the same thing? That is, in the Earth's rotating frame of reference (e.g. WGS 84), the Earth rotation correction IS the Sagnac effect.
> -- Richard
> 
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> 
> 
>> On Mar 9, 2018, at 2:41 PM, Lou Estey <lou at unavco.org> wrote:
>> 
>> - the relativistic Sagnac correction to each SV position calculation,
>> - accounting for the rotation of the Earth during the travel-time of signals
>>  from each SV to the antenna
> 
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