[time-nuts] GPS PRN vs SV...??

Bruce Griffiths bruce.griffiths at xtra.co.nz
Sat Feb 9 18:14:43 EST 2008


Tom Van Baak wrote:
>>> Based on the first 2 lines of <http://celestrak.com/NORAD/elements/gps-ops.txt>
>>>
>>> GPS BIIA-10 (PRN 32)
>>> 1 20959U 90103A   ...
>>>       
>> It checks out. Thus, you should be looking at:
>>
>> http://www.heavens-above.com/orbitdisplay.asp?Session=kebgcpaanhagkcceebmhgcnb&satid=20959
>>
>> Tom, you don't have to duck on this pass. :)
>>
>> Cheers,
>> Magnus
>>     
>
> Good. This new, correct satid also means the ground tracks from
> heavens-above and from the Trimble Planning program now agree.
>
> Thanks,
> /tvb
>
>   
To have the Trimble Planning program plot PRN32 the health status for
PRN 32 in the YUMA almanac has to be edited from 063 to 000.
Its best to save it under a different name to avoid later confusion.
Also to have the almanac recognised as a yuma almanac by the Trimble
Planning program the file extension has to be changed from alm to yum.
The yuma file has an alm extension when downloaded from:
http://www.navcen.uscg.gov/gps/almanacs.htm

Bruce


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