Bob Robinson National Science Foundation · Stanford Stanford radar moved to Chatanika Chatanika...
Transcript of Bob Robinson National Science Foundation · Stanford Stanford radar moved to Chatanika Chatanika...
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Incoherent Scatter RadarsA brief history and a quiz
Bob RobinsonNational Science Foundation
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Bill Gordon conceives of incoherent
scatter
Arecibo built by DARPA
Jicamarcabuilt by
NBS
Millstone built by MIT Lincoln
Lab
EISCAT UHF radar
built
EISCAT VHF radar
Built
AMISR is built in Alaska
AMISR is built in Canada
EISCAT Svalbard
Radar built
1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005 2010
NSF support of Millstone Hill Radar
begins
NSF takes over
Chatanikafrom DNA
NSF takes over
Jicamarcafrom NOAA
A timeline of incoherent events
NSF takes over Arecibo
from DoD
DNA builds ISR at
Stanford
Stanford radar
moved to Chatanika
ChatanikaRadar moved to Greenland
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AO1962
JRO1963
MH1962
SRF1982
The NSF Incoherent Scatter Radar Chain-2006
Sondrestrom (SRF)
Millstone Hill (MH)
Arecibo (AO)
Jicamarca (JRO)
AO1962
JRO1963
MH1962
SRF1982
The NSF Incoherent Scatter Radar Chain-2007
Sondrestrom (SRF)
Millstone Hill (MH)
Arecibo (AO)
Jicamarca (JRO)
AMISR-Poker Flat
PFR 200
7
AO1962
JRO1963
MH1962
SRF1982
The NSF Incoherent Scatter Radar Chain-2008
Sondrestrom (SRF)
Millstone Hill (MH)
Arecibo (AO)
Jicamarca (JRO)
AMISR-Poker Flat
PFR 2007
RBR 2008
AMISR-Resolute Bay
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History of AMISR1989: Workshop to develop technical requirements for an
ISR in the Polar Cap1995: Polar Cap Observatory proposal submitted by SRI1996: PCO approved for funding by NSF1997: Removed from NSF budget by Congress1998: Second Workshop convened to discuss scientific
justification for a portable incoherent scatter; highest priority locations were Alaska and Arctic Canada
2000: SRI submits proposal to build the RelocatableAtmospheric Observatory
2002: Project rescoped and renamed AMISR2003: SRI proposal approved by the National Science
Board2004: Construction begins
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What is the highest altitude from which incoherent scatter returns have been detected?
One Earth Radius
The Heliopause The Crab Nebula
The Solar Corona
The Magnetotail
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• The director of the world’s largest solar radar facility (in 1965) located at El Campo, TX, and operated by MIT for NASA
• Had to average over one year
Who was Jesse James?
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How much did it cost to build the Arecibo Observatory?
• A. $2.5 Million• B. $10.0 Million• C. $18 Million• D. $100 Million plus tip• E. The annual budget of all the U. S.
incoherent scatter radars combined
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Arecibo History Quiz• Which young Arecibo scientist was
married at the Observatory swimming pool?
• Which famous daredevil allegedly rode a motorcycle up the catwalk to the telescope platform?
• Which adventurous spelunker discovered an underground connection between two large caves in Puerto Rico?
• Which prominent NSF program officer, while visiting the Sondrestrom Radar, asked, “Where is the antenna?”
• Which well-known space scientist had the windshield of his car shattered by a falling mango within a month after coming to Puerto Rico?
Richard Behnke
Richard Behnke
Richard Behnke
Richard Behnke
Robert Kerr
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What is a chupacabra?
An elusive, nocturnal,creature in Puerto Rico that attacks and kills goats by sucking their blood.
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The Arecibo Observatory has been featured in two movies. What other ISR
has been featured in a movie?
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Where do incoherent people like Sixto come from?
Kudeki(Illinois)
Balsley(U. of
Colorado)
Sahr(U. of
Washington)
Hysell(Cornell)
Fejer(Utah State)
GonzalezUrbina Chau Lind
Don Farley
Mik
e Kell
eyBill G
ordon
Booker
Appleton
MakelaNicolls
…
BehnkeCosterDjuth
Wickwar…
Rice U.
Cornell
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What famous cartoon dog appeared in a data plot from one of the incoherent scatter
radars?
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What is AMISR?• A very cheap person• The first incoherent scatter radar built by NSF• The first U. S. incoherent scatter radar built for
basic research• The first phased-array, solid-state incoherent
scatter radar• The first incoherent scatter radar with no moving
parts• The first relocatable incoherent scatter radar• The first reconfigurable incoherent scatter radar• All of the above
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AMISR at Poker Flat, AlaskaThe Poker Flat Incoherent Scatter Radar (PFISR)
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AMISR
AMISR “All-Sky” Mode
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The first 3-D image of the aurora
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What’s next?
400 tons of steel on the beach at Resolute BayThe Resolute Bay Incoherent Scatter Radar
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What is the future of ISR?
• Sondrestrom: DoD will decide to take it back and launch it on a satellite to search for Earth-colliding asteroids
• Millstone Hill: Will be purchased from MIT by the Disney corporation, which will turn it into a theme park
• Arecibo: Will be taken over by a local pharmaceutical company that discovers a rare “medicinal” herb flourishing under the dish in the presence of intense microwave radiation
• Jicamarca: Will be used by NASA to convince the nation that it has successfully landed astronauts on Mars and found a race of ill-tempered, four-legged beasts looking amazingly like llamas
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OR:• The existing chain of radars will continue to
grow with the blossoming of AMISR systems at other locations.
AO1962
JRO1963
MH1962
SRF1982
Sondrestrom (SRF)
Millstone Hill (MH)
Arecibo (AO)
Jicamarca (JRO)
AO1962
JRO1963
MH1962
SRF1982
The NSF Incoherent Scatter Radar Chain-2007
Sondrestrom (SRF)
Millstone Hill (MH)
Arecibo (AO)
Jicamarca (JRO)
AMISR-Poker Flat
PFR 200
7
AO1962
JRO1963
MH1962
SRF1982
PFR 2007
RBR 2008
• The global chain of ISRs will continue to grow
• ISRs of the future will be lower cost, with the ability to run routinely for many hours
• Each ISR site will include a cluster of advanced radiowave and optical instrumentation for comprehensive observations of the upper atmosphere
• The ISR network will be fully integrated, with smart, interactive, autonomous operation
• Barriers between ISRs will disappear, allowing users and students greater versatility, flexibility and ease in conducting experiments
• Most importantly, the next generation of radar users will be knowledgeable and skilled in all aspects of ISR operation and data analysis, leading to new discoveries and improved capabilities
Or:
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What does incoherent mean?
• Dictionary: Lacking coherence– Rambling, random, disconnected, incomprehensible
• Example 1: Incoherent scatter is the process by which radiowaves are randomly scattered by electrons in the ionosphere
• Example 2: This talk• Incoherent scatter, like this talk, depends on the
weak connection between its parts, and contains useful information when sufficiently sensitive detecting systems are applied
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Bonus Question• What is the most important aspect of incoherent
scatter radars that have kept them at the forefront of ionospheric and atmospheric research?
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The End