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Remote Sensing Pedagogy and The Wilheit Curve. College of Engineering Department of Atmospheric, Oceanic & Space Sciences. Chris Ruf University of Michigan, Ann Arbor. IGARSS 2011 Vancouver BC, CANADA 26 July 2011. Motivation. - PowerPoint PPT Presentation
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Remote Sensing Pedagogy and The Wilheit Curve
Chris Ruf
University of Michigan, Ann Arbor
College of EngineeringDepartment of Atmospheric, Oceanic & Space
Sciences
IGARSS 2011Vancouver BC, CANADA
26 July 2011
26 July 11
Ruf, The Wilheit Curve, IGARSS 2011 / 9
Motivation
• Teaching remote sensing, and thinking about how it works in general, can be facilitated by explaining and understanding a few critical things…– The Forward Model: How sensor observations are related to
geophysical parameters– The Sensitivity: How the observations respond to changes in
geophysical parameters of interest (e.g. dTB/dWindspeed)– The Sensor Design: How the sensitivity varies with the type
of observation (e.g. dTB/dWindspeed vs. freq,pol’z,θi)– The Inversion Algorithm: To unscramble the forward model
and estimate geophysical parameters from the observations, choose sensor channels with dissimilar sensitivities
26 July 11
Ruf, The Wilheit Curve, IGARSS 2011 / 9
Statement of Problem
• How does one capture both the dependence of the observations on the geophysical parameters and the interdependence of that dependence, from one sensor channel to the next?
• Answer suggested in Wilheit, T. T.: A model for the microwave emissivity
of the ocean's surface as a function of wind speed. IEEE Trans. Geoscience Electronics, GE-17, 244-249, 1979.
26 July 11
Ruf, The Wilheit Curve, IGARSS 2011 / 9
The Paper
26 July 11
Ruf, The Wilheit Curve, IGARSS 2011 / 9
The Wilheit Curves
26 July 11
Ruf, The Wilheit Curve, IGARSS 2011 / 9
Using the Curves as a Guide for Sensor Design
High clouds, moderate vapor
High vapor, moderate clouds
moderate vapor, moderate clouds
High wind, moderate SST
High SST, moderate wind
26 July 11
Ruf, The Wilheit Curve, IGARSS 2011 / 9
Are There Equivalent “Wilheit Curves” For Other Design Problems?
• Example: How best to staff a remote sensing research project?
• Project Requirements– Definition of scientific problem– Execution of the project– Obtaining funding, interaction with users, community
outreach
• Parameterize the staff members and identify the sensitivity of the requirements to each type of staff
26 July 11
Ruf, The Wilheit Curve, IGARSS 2011 / 9
Wilheit Curves forThe Human Touch in Project Staffing
DIPLOMATICTACTLESS NORMAL
Community Engagement (funding, outreach, etc.)
Definition ofProblem
ProjectExecution
26 July 11
Ruf, The Wilheit Curve, IGARSS 2011 / 9
Optimized Staffing
• Obtaining funding, interaction with users, community outreach (highly tactful)– Chooses words carefully, thinks before talks, has some familiarity with the
problem
– e.g. Headquarters Program Manager• Execution of the project (moderately tactful)
– Clear and succinct communication skills, follows instructions well
– e.g. Engineering Support Team• Definition of the scientific problem (tactless)
– Understands the science, speaks their mind, has general disregard for others
– Any suggestions from the audience?