TU4.L10 - FROM A REAL PENCIL TO A SYNTHETIC BROOM: THE PAST, PRESENT AND FUTURE OF HIRAD
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Transcript of TU4.L10 - FROM A REAL PENCIL TO A SYNTHETIC BROOM: THE PAST, PRESENT AND FUTURE OF HIRAD
From a Real PencilFrom a Real Pencilto a Synthetic Broom:to a Synthetic Broom:
The Past, Present and Future of HIRADThe Past, Present and Future of HIRADChris Ruf
Space Physics Research LaboratoryAOSS Dept.
University of Michigan
and a large team of collaborators at NASA Marshall, the University of Central Florida,
the University of Michigan, and the NOAA Hurricane Research Division
IGARSS 2010Honolulu, HI USA
26-30 July 2010
Univ. of Michigan
Univ. of Alabama/Huntsville
Univ. of Central Florida
NASA
NOAA
The Prehistoric PastThe Prehistoric Past
The Stepped Frequency Microwave Radiometer (SFMR)
27 July '10 Ruf, HIRAD Past, Present, Future; IGARSS 2010 pg 3
NOAA Hurricane Research Division NOAA Hurricane Research Division Stepped Frequency Microwave RadiometerStepped Frequency Microwave Radiometer
Horn Antenna SFMR electronics
SFMR wing pod
SFMR on NOAA WP3D Aircraft
Wide band (4.6 - 7.2 GHz) receiver
27 July '10 Ruf, HIRAD Past, Present, Future; IGARSS 2010 pg 4
Brightness Temperature Spectra for SFMR Hurricane Katrina Overpass
Freq
Tapp
27 July '10 Ruf, HIRAD Past, Present, Future; IGARSS 2010 pg 5
Retrieved Wind Speed & Rain Ratefor SFMR Katrina Overpass
Wind Speed
Rain Rate
27 July '10 Ruf, HIRAD Past, Present, Future; IGARSS 2010 pg 6
Jones et al., Science, vol. 214, 1981.
27 July '10 Ruf, HIRAD Past, Present, Future; IGARSS 2010 pg 7
Jones et al., Science, vol. 214, 1981.
The Recent PastThe Recent Past
Birth of the HIRAD Project
27 July '10 Ruf, HIRAD Past, Present, Future; IGARSS 2010 pg 9
Timeline for the Hurricane Imaging Radiometer (HIRAD)
• Phase 1 (2001) NASA Langley IRAD project “Design Study of a Synthetic Thinned Aperture Radiometer for Hurricane Impact Prediction”– NASA Project Manager: Jimmy Johnson
– Science Lead Investigator: Linwood Jones
Jones, W.L., J. Zec, J.W. Johnson, C. S. Ruf and M.C. Bailey, “A Feasibility Study for a Wide-Swath, High Resolution, Airborne Microwave Radiometer for Operational Hurricane Measurements,” Proc. of the 56th Interdepartmental Hurricane Conference, New Orleans, LA, 2002.
27 July '10 Ruf, HIRAD Past, Present, Future; IGARSS 2010 pg 10
Timeline for the Hurricane Imaging Radiometer (HIRAD)
• Phase 2 (2003) NASA Langley IRAD project develops multi-frequency stacked patch microstrip array– NASA Project Manager: Jimmy Johnson
– Science Lead Investigator: Linwood Jones
– Antenna Design Engineer: M.C. Bailey
Jones, W.L., J.W. Johnson, C. S. Ruf and M.C. Bailey, “Hurricane Imaging Microwave Radiometer for Operational Satellite Hurricane Measurements,” presented at 58th Interdepartmental Hurricane Conference, Charleston, SC, 2004.
27 July '10 Ruf, HIRAD Past, Present, Future; IGARSS 2010 pg 11
Timeline for the Hurricane Imaging Radiometer (HIRAD)
• Phase 3 (2006) NASA Marshall/UAH IRAD project begins airborne HIRAD development– NASA Project Lead: Robbie Hood
– HIRAD liaison to NASA: Linwood Jones
• Phase 4 (2008) NOAA SBIR develops multi-frequency correlating receivers for airborne HIRAD– Receiver Supplier: ProSensing, Inc.(also SFMR supplier)
– HIRAD liaison to NOAA: Linwood Jones
• Phase 5 (2010) Aircraft I&T and test flights• Phase 6 (2010 – …) Science campaigns
27 July '10 Ruf, HIRAD Past, Present, Future; IGARSS 2010 pg 12
Interferometer as Spatial Frequency Filter
Fourier Synthesis Synthetic Aperture Fourier Synthesis Synthetic Aperture Measurement ConceptMeasurement Concept
2*
1 SS
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HIRAD Instrument Design Summary
• Antenna – Multi-resonant planar microstrip patch array
• Receivers– Correlating interferometer pairs with stepped frequency LO
heritage from SFMR
27 July '10 Ruf, HIRAD Past, Present, Future; IGARSS 2010 pg 14
HIRAD Planar Antenna Array
• 10 active rows of 16-element multi-resonant patch antennas
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HIRAD Functional Block Diagram
The PresentThe Present
HIRAD System Integration and Test
and
First Engineering Test Flights
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Interference Pattern Measurementsto Derive Imaging Impulse Response
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April 2010 Anechoic Chamber Results
5 GHz Element and Interference Patterns
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5 GHz Synthesized Antenna Patternsat -60 deg, nadir, +60 deg
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Nadir Mainbeams of all 4 Synthesized Antenna Patterns
nadir HPBW4 GHz 3.2 deg5 GHz 2.6 deg6 GHz 2.4 deg6.6 GHz 2.3 deg
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HIRAD Integration on WB-57 March 2010
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HIRAD WB-57 flights on 9 and 11 Mar 2010
11 Mar flight
9 Mar flight
First look
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9 Mar 2010 HIRAD WB-57 flightTB @ 5 GHz during coastal crossing
flight line
The FutureThe Future
HIRAD participation inGenesis and Rapid Intensification Process (GRIP)
(Fall 2010)and
Airborne Venture-class mission “Hurricane and Severe Storm Sentinel”, Scott Braun (PI)
(2011-2016)
27 July '10 Ruf, HIRAD Past, Present, Future; IGARSS 2010 pg 25
The moral of the story is…
“Patience, perseverance
and knowing the right people
make projects happen”
Thanks, Linwood!