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OPUS- fewer than 3 satellites

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lanceboyle93101
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Living on an island, I run into this alot.?ÿ As I understand, to generate a solution, the work site must be within a triangle formed by OPUS stations (CORS?)

We have a number of CORS stations but our work sites are not typically within a triangle formed by CORS stations.

Is their a workaround in OPUS I'm not seeing ??ÿ Thanks for your comments in advance.

FILE: 28650141.20o OP1579306255809

?ÿ6029?ÿ?ÿ After the single baseline analysis, fewer than 3 useable

?ÿ6029?ÿ?ÿ reference stations remain. Aborting.

?ÿ6029


 
Posted : January 17, 2020 6:26 pm
GaryG
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Under options you pick CORS sites to use.

?ÿ

?ÿ


 
Posted : January 17, 2020 7:09 pm
spledeus
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UFCORS and PP software. Download and process on your own.?ÿ Years ago i had bad geometry and the nearest CORS was 45 to 60 miles away.?ÿ I had some 8 hour sets that came out ok but not great.?ÿ It was back when MTS gave away static (now Leica network) and I could process through TopCon Tools.?ÿ Then I bought some old sokkias and setup a base on my roof.


 
Posted : January 17, 2020 7:19 pm
bill93
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OPUS isn't good at giving the most relevant and informative error message.?ÿ I've seen this message when I submitted too soon, before the CORS data had all become available on the NGS computers, so if you do have more CORS in the region it may work later.

I didn't think OPUS-S required the point to be within a triangle of CORS.?ÿ OPUS-RS did originally require it to be within the polygon of CORS, but they relaxed that by 50 km.


 
Posted : January 17, 2020 7:20 pm
lanceboyle93101
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@bill93

THE OBS FILE WAS FROM wED. 1/15. i WAS THINKING 36 HR WOULD BE ENOUGH. THANKS FOR TIP.


 
Posted : January 18, 2020 1:19 am

bill93
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That usually would be enough, but it isn't the hours after observation directly that counts. I found it best to wait until about 1 PM eastern time on the day after the Greenwich day of the last observation in the file.

So if you take data after 2 pm on the 15th in Hawaii that's 16th UTC. You have to wait until the end of the 16th UTC plus time for the data to be processed.?ÿ I wouldn't expect all the data to be ready until maybe 7 or 8 am of the 17th in HI. Occasionally later.


 
Posted : January 18, 2020 7:40 am
loyal
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Posted by: @bill93

That usually would be enough, but it isn't the hours after observation directly that counts. I found it best to wait until about 1 PM eastern time on the day after the Greenwich day of the last observation in the file.

So if you take data after 2 pm on the 15th in Hawaii that's 16th UTC. You have to wait until the end of the 16th UTC plus time for the data to be processed.?ÿ I wouldn't expect all the data to be ready until maybe 7 or 8 am of the 17th in HI. Occasionally later.

That was my suspicion as well.

Loyal?ÿ


 
Posted : January 18, 2020 12:17 pm