EOP Prediction Users
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W. Wooden, D. McCarthy, B. Luzum EOP EOP Prediction Prediction Users Users
description
EOP Prediction Users. W. Wooden, D. McCarthy, B. Luzum. User Information. Sources of Information Survey questionnaires Product usage Interactive feedback Future Expectations?. Operational System Engineers Academics Scientists. Who are the Users?. Positioning and Navigation. - PowerPoint PPT Presentation
Transcript of EOP Prediction Users
W. Wooden, D. McCarthy, B. Luzum
EOP EOP Prediction Prediction
UsersUsers
User InformationUser Information
Sources of InformationSources of Information Survey questionnairesSurvey questionnaires Product usageProduct usage Interactive feedbackInteractive feedback
Future Expectations?Future Expectations?
Who are the Users?Who are the Users?
Operational System Engineers
Academics Scientists
ScientificOperational
Why do they want predictions?Why do they want predictions?
Positioning
and
Navigation
Research
Pointing
Timekeeping
What do they want?What do they want?
Users’ ManualDataAccurateDependableUser friendly
DELIVER ON DEMAND
SOFTWARE With Test Data
It depends on the It depends on the applicationapplication
General Requirements
One unique set of IERS prediction products
Easily accessible User friendly Reliable Meets users’ needs for
Accuracy Update frequency Spacing Prediction interval Metadata
Accuracy?
>0.001"<0.001"
Operational and Scientific Users of Polar Motion Predictions
>0.000 1s<0.000 1s
Operational and Scientific Users of UT1-UTC Predictions
Prediction Length?
~ 30 days~ 1 year
Operational Users
~30 days~1 year
Scientific Users
Update Frequency?
weeklydaily
Operational Users
~30 days~1 year
Scientific Users
Spacing?
<1 day1 day>1day
Operational Users
Scientific Users
(Some also want analytical expressions)
<1 day1 day>1day
How do they want to receive predictions?
AnalyticalTables Operational Users
Scientific UsersAnalyticalTables
Future Users?Future Users?
Probably about the same Probably about the same mix of operational and mix of operational and scientific usersscientific users
Some “specialty” usersSome “specialty” users Real-time availabilityReal-time availability
Particularly UT1Particularly UT1 Order of magnitude Order of magnitude
improvement in improvement in accuracyaccuracy
New ProductsNew Products
