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Global Motions and GPSVEL Working Group
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(Slide Presentation)
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Geoffrey Blewitt
University of Nevada, Reno
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GPSVEL
Scientific Objectives
Practical Objectives
Requirements
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GPSVEL
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GPS global velocity synthesis
Unified GPS solution
global networks
regional networks
campaigns
Objectives
scientific - improved quality of solution
practical - improved documentation and access
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Scientific Objectives
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Improved quality of solution
unified reference frame
rigorous approach - improved interpretation
combination analysis - improved precision
stochastic modelling
variance component estimation - improved precision
outlier detection - improved reliability & precision
realistic covariance matrix - improved interpretation
general improvement
working group experience & discussion
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Practical Objectives
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Improved documentation and access
standard procedures and formats
SINEX solution files
station configuration history verification
one stop shopping
tools for partial solutions - in space or time?
web interface?
benchmarking
“standard solution” for future comparison & use
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Requirements
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Data
IGS
Dense regional networks
Campaigns
Expertise
GPS analysis
Solution synthesis - internal QA
Velocity modelling - external QA
Effort
Distributed processing- SINEX versus RINEX
Element of dedicated effort required at UNAVCO Facility level
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unavco.org