[IGSSTATION-2977]: Re: [IGSSTATION-2975]: Re: NIST primary receiver

[Robert Khachikyan]

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IGS Station Mail          08 Apr 08:42:45 PDT 2009      Message Number 2977
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Author: Robert Khachikyan

Jim,

We have noted the latency issue. The bug has been identified to be 
outside of the IGS Central Bureau.
Proper steps have been taken to remedy the problem as soon as possible.

Best Regards,
--Robert Khachikyan
IGS Central Bureau

Jim.Ray wrote:
> ****************************************************************************** 
>
> IGS Station Mail          07 Apr 12:29:08 PDT 2009      Message Number 
> 2975
> ****************************************************************************** 
>
>
> Author: Jim Ray
>
> To amplify on Marc's message, the level of cycle slips for
> NISU is more than an order of magnitude greater than for
> NIST -- see plots at:
>
> http://igscb.jpl.nasa.gov/network/site/nisu.html
> http://igscb.jpl.nasa.gov/network/site/nist.html
>
> In fact, the NISU cycle slips are high enough to suggest
> some problem with the hardware there (or snow covering the
> antenna).  Both MP1 and MP2 are on the high side too.
>
> I would suggest to plan to decommission this site in the
> near future.
>
> On the down side, though, the data delivery latencies for
> both stations are excessive (for the past ~40 d) and really
> should be reduced (assuming the IGS CB plots are correct).
>
> Also, both are registered with M type ("marker") DOMES
> numbers whereas they both use the antenna ARPs as physical
> reference points.  It is too late to correct this now, but
> please request S type ("system") DOMES numbers for such
> points in the future.
>
>
>
> Marc Weiss wrote:
>> ****************************************************************************** 
>>
>> IGS Station Mail          07 Apr 12:08:43 PDT 2009      Message 
>> Number 2974
>> ****************************************************************************** 
>>
>>
>> Author: Marc Weiss
>> Subject: NIST primary receiver
>>
>> Dear Colleagues,
>>
>> The station named NIST is a newer station in the IGS that is intended 
>> to be the primary station of NIST in Boulder.  This uses newer (and 
>> apparently better) equipment than our older station NISU.  Several 
>> analysis centers are still using the data from NISU instead of those 
>> from NIST.  Please consider using the data from NIST.
>>
>> Best Regards,
>> Marc Weiss
>>
>>
>>
>> ____________________________________________________________________
>> Marc A. Weiss, Ph.D.                                    Phone:  
>> 303/497-3261
>> NIST Time and Frequency Division                FAX:     303/497-6461
>> MS 847.5, 325 Broadway
>> Boulder, CO  80305-3328
>> ____________________________________________________________________