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Infrared Remote Sensing.
Paul Lucey heads the HIGP team that has developed hyperspectral thermal
infrared imagers for use in lithologic mapping. These instruments fly
either on a helicopter or a light aircraft, and have been used to map
different soil and rock types in Hawaii and the mainland. A new instrument
is also in the planning stage, potentially for flight on the International
Space Station. The science objective for this new instrument is the
routine observation of coral reefs around the world. Coral is a sensitive
indicator of water quality and temperature, so that a global coral
monitoring program will provide much information on global climate change.
processes that operated in magma chambers on the Moon.
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CEROS Synthetic Aperture Sonar.
The HMRG engineering team,
led by Mark Rognstad, with industry
partner Raytheon Systems and funding from the Center of Excellence for Research
in Ocean Science (CEROS) is developing a
synthetic aperture sonar system. It is designed to combine bottom penetrating
12 kHz sound with the enhanced resolution of synthetic aperture signal processing. Towed behind a ship, it has demonstrated the capability of imaging objects buried as much as a meter deep in sand, over a swath extending 20 meters away from the tow vehicle. Potential applications include marine archeology and unexploded ordinance detection.
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HAWAII MR1/MR2.
The HIGP Acoustic Wide Angle Imaging Instrument, Mapping Researcher 1
(HAWAII MR1),
also built by HMRG , is the first seafloor mapping sonar to implement all digital signal processing. The photograph depicts one of the MR1 digital signal processor/programmable gate array boards, sitting on top of the box of boards that it functionally replaced from the first generation SeaMARC II sonar. It has been used extensively for geophysical mapping, communications cable surveying, fisheries research, and locating the WW2 aircraft carrier USS Yorktown. An improved version known as MR2, with the capability of beam steering and shaping,
as well as transmit pulse encoding, is now under construction.
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FLYSPEC.
FLYSPEC is a UV correlation spectrometer developed by Keith Horton. This portable instrument is being used as an on-site tool for locating sources of volcanic emissions, mapping SO2 concentration levels from volcanic plumes, and as a ground-truth correlation tool for remote sensing systems.
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For more information on instrument development at HIGP contact:
Keith Horton,
Paul Lucey,
Mark Rognstad, and
Shiv Sharma.
Text and images courtesy Mark Rognstad, Peter Mouginis-Mark, and HIGP.
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