[time-nuts] surplus carrier phase measurement-capable receivers (was Thunderbolt firmware differences)

christopher hoover ch at murgatroid.com
Mon Jul 13 03:01:54 UTC 2009


> I wanted to have Heather make a RINEX file that could be submiited to OPUS-GIS to get a more precise antenna location.   The Tbolt does not support carrier phase measurements.  It does output doppler values.  
>
> The code phase (pseudorange) values that it outputs look to be VERY difficult to translate into normal pseudoranges.  You need to calculate the satellite positions from the almanac, etc to be able to use them.
>
> OPUS-GIS is still in alpha testing mode.  I don't know what observable you need to have it post process the data.
>   
What typically-available surplus receivers do carrier phase 
measurements[1]?   I'm close to putting up a choke ring antenna I scored 
off of the surplus market on the roof -- I don't think the wife is going 
to let me build a proper monument in the yard.  :-)     Hence, I, too, 
am interested in getting a precise antenna fix.   I 'spose I could hire 
a surveyor, but that's cheating. 

-ch

[1]. I did enough work w/surplus SuperStar receivers that I convinced 
myself I could flash the carrier phase-capable software onto the board, 
but that's stealing.  I am interested in receivers where I can  get 
legitimate access to carrier phase measurements.




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