long-wave infrared imaging spectroscopy from small satellite ......long-wave infrared imaging...
TRANSCRIPT
![Page 1: Long-wave infrared imaging spectroscopy from small satellite ......Long-wave infrared imaging spectroscopy from small satellite and UAV platforms Robert Wright, Paul Lucey, Sarah Crites,](https://reader033.vdocuments.mx/reader033/viewer/2022052814/60a005d336526b1b045d2038/html5/thumbnails/1.jpg)
Long-wave infrared imaging spectroscopy from small satellite and UAV platformsRobert Wright, Paul Lucey, Sarah Crites, Mark Wood, Harold Garbeil, Eric Pilger
Hawai'i Institute of Geophysics and Planetology, University of Hawai'i at Mānoa
![Page 2: Long-wave infrared imaging spectroscopy from small satellite ......Long-wave infrared imaging spectroscopy from small satellite and UAV platforms Robert Wright, Paul Lucey, Sarah Crites,](https://reader033.vdocuments.mx/reader033/viewer/2022052814/60a005d336526b1b045d2038/html5/thumbnails/2.jpg)
Overview• Thermal infrared (3-5 µm
and 8-14 µm) imagingspectroscopy allows you toquantify the chemicalcomposition of solid andgaseous targets remotely, aswell as their thermo-physical characteristics
• Imaging interferometry hasthe potential to characterizethese targets at highspectral resolution, withhigh signal-to-noise
• HIGP has active programsaimed at making suchremote sensing instrumentssmall enough, light enough,and with low enough powerrequirements, to be flownon micro-satellites and UAVs
Methane leak, Los Angeles Dust cloud, Iraq
HIGP-developed TIRCIS instrument
CH4SiO2
![Page 3: Long-wave infrared imaging spectroscopy from small satellite ......Long-wave infrared imaging spectroscopy from small satellite and UAV platforms Robert Wright, Paul Lucey, Sarah Crites,](https://reader033.vdocuments.mx/reader033/viewer/2022052814/60a005d336526b1b045d2038/html5/thumbnails/3.jpg)
• HIGP designs, builds and tests thermal infrared imaging spectrometers, with a focus on high spectral resolution and high sensitivity (signal-to-noise)
• In line with the growing importance of small satellites and UAV platforms, these instruments are designed to be compact, low mass, with modest power requirements
• To satisfy these (seemingly) mutually exclusive goals we have focused on two key technologies:
• Uncooled microbolometer detector arrays to detecting the light• An Interferometric approach to resolving the spectral composition of the light
Small-sat/UAV compatible sensors built at HIGP
Thermal Infrared Compact Imaging Spectrometer (TIRCIS)
Space Ultra-Compact Hyperspectral Imager (SUCHI)
Thermal Hyperspectral Imager (THI)
![Page 4: Long-wave infrared imaging spectroscopy from small satellite ......Long-wave infrared imaging spectroscopy from small satellite and UAV platforms Robert Wright, Paul Lucey, Sarah Crites,](https://reader033.vdocuments.mx/reader033/viewer/2022052814/60a005d336526b1b045d2038/html5/thumbnails/4.jpg)
Thermal Infra-Red Compact Imaging Spectrometer(TIRCIS)
• Funded by NASA (2014-2017)• Goal is to design, build and test a prototype
for a small-satellite compliant thermal infrared imaging spectrometer
• Advance from TRL 4 to TRL 6
![Page 5: Long-wave infrared imaging spectroscopy from small satellite ......Long-wave infrared imaging spectroscopy from small satellite and UAV platforms Robert Wright, Paul Lucey, Sarah Crites,](https://reader033.vdocuments.mx/reader033/viewer/2022052814/60a005d336526b1b045d2038/html5/thumbnails/5.jpg)
Calibration
Uncooled microbolometer
Fabry-Perot interferometer
Lenses
Spectral imaging using a Fabry-Perot interferometer
![Page 6: Long-wave infrared imaging spectroscopy from small satellite ......Long-wave infrared imaging spectroscopy from small satellite and UAV platforms Robert Wright, Paul Lucey, Sarah Crites,](https://reader033.vdocuments.mx/reader033/viewer/2022052814/60a005d336526b1b045d2038/html5/thumbnails/6.jpg)
Interferometer
Uncooled microbolometer
Primary radiometric calibration
Secondary radiometric calibration
and flat-field correction
Lenses
Electronics
Structure
TIRCIS instrument design
![Page 7: Long-wave infrared imaging spectroscopy from small satellite ......Long-wave infrared imaging spectroscopy from small satellite and UAV platforms Robert Wright, Paul Lucey, Sarah Crites,](https://reader033.vdocuments.mx/reader033/viewer/2022052814/60a005d336526b1b045d2038/html5/thumbnails/7.jpg)
2.4 kg
0.2 kg
TIRCIS spatial resolution: 120 m ground resolution from 500 km
![Page 8: Long-wave infrared imaging spectroscopy from small satellite ......Long-wave infrared imaging spectroscopy from small satellite and UAV platforms Robert Wright, Paul Lucey, Sarah Crites,](https://reader033.vdocuments.mx/reader033/viewer/2022052814/60a005d336526b1b045d2038/html5/thumbnails/8.jpg)
i) Interferometer #1 = 44 cm-1 ~ 15 samples between 8-14 µmii) Interferometer #2 = 8.7 cm-1 ~60 samples between 8-14 µmiii) Interferometer #3 = 6.5 cm-1 ~90 samples between 8-14 µm
0.1 kg
TIRCIS spectral resolution: 15 to 90 wavebands between 8-14 µm
![Page 9: Long-wave infrared imaging spectroscopy from small satellite ......Long-wave infrared imaging spectroscopy from small satellite and UAV platforms Robert Wright, Paul Lucey, Sarah Crites,](https://reader033.vdocuments.mx/reader033/viewer/2022052814/60a005d336526b1b045d2038/html5/thumbnails/9.jpg)
Wedge angle equates to samples in the interferogram
5 mrad slope = 44 cm-1 15 mrad slope = 8.7 cm-1
![Page 10: Long-wave infrared imaging spectroscopy from small satellite ......Long-wave infrared imaging spectroscopy from small satellite and UAV platforms Robert Wright, Paul Lucey, Sarah Crites,](https://reader033.vdocuments.mx/reader033/viewer/2022052814/60a005d336526b1b045d2038/html5/thumbnails/10.jpg)
TIRCIS structure: stress and deformation
StressMaximum = 5000 psi (yield strength of material = 8000 psi)
DeformationMaximum displacement = 0.05 mm (primary calibrator) and 0.02
mm for optical elements (camera)
Mode shape 1: 222.98 Hz Mode shape 2: 352.48 Hz
ASD vs frequency for 55 kg micro-satellite(derived from NASA GEVS-SE, RevA, 1996)
![Page 11: Long-wave infrared imaging spectroscopy from small satellite ......Long-wave infrared imaging spectroscopy from small satellite and UAV platforms Robert Wright, Paul Lucey, Sarah Crites,](https://reader033.vdocuments.mx/reader033/viewer/2022052814/60a005d336526b1b045d2038/html5/thumbnails/11.jpg)
TIRCIS performance model: signal-to-noise predictions
![Page 12: Long-wave infrared imaging spectroscopy from small satellite ......Long-wave infrared imaging spectroscopy from small satellite and UAV platforms Robert Wright, Paul Lucey, Sarah Crites,](https://reader033.vdocuments.mx/reader033/viewer/2022052814/60a005d336526b1b045d2038/html5/thumbnails/12.jpg)
Two 8” aperture NIST-traceable blackbody calibration standards (-40 °C to 120 °C)
Instrument test facilities: blackbody standards
![Page 13: Long-wave infrared imaging spectroscopy from small satellite ......Long-wave infrared imaging spectroscopy from small satellite and UAV platforms Robert Wright, Paul Lucey, Sarah Crites,](https://reader033.vdocuments.mx/reader033/viewer/2022052814/60a005d336526b1b045d2038/html5/thumbnails/13.jpg)
Instrument test facilities: collimator/target projector
Collimator, target projector (with spectral calibration capability)
![Page 14: Long-wave infrared imaging spectroscopy from small satellite ......Long-wave infrared imaging spectroscopy from small satellite and UAV platforms Robert Wright, Paul Lucey, Sarah Crites,](https://reader033.vdocuments.mx/reader033/viewer/2022052814/60a005d336526b1b045d2038/html5/thumbnails/14.jpg)
Instrument test facilities: high resolution FTIR spectrometer
Design and Prototypes Model 102 FTIR spectrometer• 4 cm-1 spectral resolution• 2-14 µm spectral range
![Page 15: Long-wave infrared imaging spectroscopy from small satellite ......Long-wave infrared imaging spectroscopy from small satellite and UAV platforms Robert Wright, Paul Lucey, Sarah Crites,](https://reader033.vdocuments.mx/reader033/viewer/2022052814/60a005d336526b1b045d2038/html5/thumbnails/15.jpg)
![Page 16: Long-wave infrared imaging spectroscopy from small satellite ......Long-wave infrared imaging spectroscopy from small satellite and UAV platforms Robert Wright, Paul Lucey, Sarah Crites,](https://reader033.vdocuments.mx/reader033/viewer/2022052814/60a005d336526b1b045d2038/html5/thumbnails/16.jpg)
120 m GRE from 500 km60 channels (8-14 µm)SNR ~200-400:1Mass = 5 kgPeak power = 20 WDimensions = 28 cm × 36 cm × 56 cm
TIRCIS instrument summary
![Page 17: Long-wave infrared imaging spectroscopy from small satellite ......Long-wave infrared imaging spectroscopy from small satellite and UAV platforms Robert Wright, Paul Lucey, Sarah Crites,](https://reader033.vdocuments.mx/reader033/viewer/2022052814/60a005d336526b1b045d2038/html5/thumbnails/17.jpg)
Space Ultra-Compact Hyperspectral Imager (SUCHI)
• Design funded by NASA (2010-2014)• Goal was to design, build and test a flight
unit for a thermal infrared imaging spectrometer, as the primary payload for the ORS-4 mission
![Page 18: Long-wave infrared imaging spectroscopy from small satellite ......Long-wave infrared imaging spectroscopy from small satellite and UAV platforms Robert Wright, Paul Lucey, Sarah Crites,](https://reader033.vdocuments.mx/reader033/viewer/2022052814/60a005d336526b1b045d2038/html5/thumbnails/18.jpg)
SUCHI instrument design
![Page 19: Long-wave infrared imaging spectroscopy from small satellite ......Long-wave infrared imaging spectroscopy from small satellite and UAV platforms Robert Wright, Paul Lucey, Sarah Crites,](https://reader033.vdocuments.mx/reader033/viewer/2022052814/60a005d336526b1b045d2038/html5/thumbnails/19.jpg)
Onboard calibration shutters
![Page 20: Long-wave infrared imaging spectroscopy from small satellite ......Long-wave infrared imaging spectroscopy from small satellite and UAV platforms Robert Wright, Paul Lucey, Sarah Crites,](https://reader033.vdocuments.mx/reader033/viewer/2022052814/60a005d336526b1b045d2038/html5/thumbnails/20.jpg)
Sealed vessel houses non-space-qualified components
![Page 21: Long-wave infrared imaging spectroscopy from small satellite ......Long-wave infrared imaging spectroscopy from small satellite and UAV platforms Robert Wright, Paul Lucey, Sarah Crites,](https://reader033.vdocuments.mx/reader033/viewer/2022052814/60a005d336526b1b045d2038/html5/thumbnails/21.jpg)
SUCHI electronics, designed and fabricated in house
![Page 22: Long-wave infrared imaging spectroscopy from small satellite ......Long-wave infrared imaging spectroscopy from small satellite and UAV platforms Robert Wright, Paul Lucey, Sarah Crites,](https://reader033.vdocuments.mx/reader033/viewer/2022052814/60a005d336526b1b045d2038/html5/thumbnails/22.jpg)
SUCHI in the cleanrooms
![Page 23: Long-wave infrared imaging spectroscopy from small satellite ......Long-wave infrared imaging spectroscopy from small satellite and UAV platforms Robert Wright, Paul Lucey, Sarah Crites,](https://reader033.vdocuments.mx/reader033/viewer/2022052814/60a005d336526b1b045d2038/html5/thumbnails/23.jpg)
SUCHI undergoing vibration testing
![Page 24: Long-wave infrared imaging spectroscopy from small satellite ......Long-wave infrared imaging spectroscopy from small satellite and UAV platforms Robert Wright, Paul Lucey, Sarah Crites,](https://reader033.vdocuments.mx/reader033/viewer/2022052814/60a005d336526b1b045d2038/html5/thumbnails/24.jpg)
Thermal-Vacuum test chamber
![Page 25: Long-wave infrared imaging spectroscopy from small satellite ......Long-wave infrared imaging spectroscopy from small satellite and UAV platforms Robert Wright, Paul Lucey, Sarah Crites,](https://reader033.vdocuments.mx/reader033/viewer/2022052814/60a005d336526b1b045d2038/html5/thumbnails/25.jpg)
SUCHI undergoing T-VAC testing
![Page 26: Long-wave infrared imaging spectroscopy from small satellite ......Long-wave infrared imaging spectroscopy from small satellite and UAV platforms Robert Wright, Paul Lucey, Sarah Crites,](https://reader033.vdocuments.mx/reader033/viewer/2022052814/60a005d336526b1b045d2038/html5/thumbnails/26.jpg)
SUCHI instrument summary
250 m GRE from 500 km20 channels (8-14 µm)SNR ~200-400:1Mass = 10 kgPeak power = 7 WDimensions = 10 cm × 11 cm × 36 cm
![Page 27: Long-wave infrared imaging spectroscopy from small satellite ......Long-wave infrared imaging spectroscopy from small satellite and UAV platforms Robert Wright, Paul Lucey, Sarah Crites,](https://reader033.vdocuments.mx/reader033/viewer/2022052814/60a005d336526b1b045d2038/html5/thumbnails/27.jpg)
SUCHI was launched onboard ORS-4 in October 2015
![Page 28: Long-wave infrared imaging spectroscopy from small satellite ......Long-wave infrared imaging spectroscopy from small satellite and UAV platforms Robert Wright, Paul Lucey, Sarah Crites,](https://reader033.vdocuments.mx/reader033/viewer/2022052814/60a005d336526b1b045d2038/html5/thumbnails/28.jpg)
Thermal Hyperspectral Imager (THI)
![Page 29: Long-wave infrared imaging spectroscopy from small satellite ......Long-wave infrared imaging spectroscopy from small satellite and UAV platforms Robert Wright, Paul Lucey, Sarah Crites,](https://reader033.vdocuments.mx/reader033/viewer/2022052814/60a005d336526b1b045d2038/html5/thumbnails/29.jpg)
Calibrated gas measurements with THI
![Page 30: Long-wave infrared imaging spectroscopy from small satellite ......Long-wave infrared imaging spectroscopy from small satellite and UAV platforms Robert Wright, Paul Lucey, Sarah Crites,](https://reader033.vdocuments.mx/reader033/viewer/2022052814/60a005d336526b1b045d2038/html5/thumbnails/30.jpg)
Field gas measurements with THI
![Page 31: Long-wave infrared imaging spectroscopy from small satellite ......Long-wave infrared imaging spectroscopy from small satellite and UAV platforms Robert Wright, Paul Lucey, Sarah Crites,](https://reader033.vdocuments.mx/reader033/viewer/2022052814/60a005d336526b1b045d2038/html5/thumbnails/31.jpg)
• HIGP designs, builds and tests thermal infrared imaging spectrometers, with a focus on high spectral resolution and high sensitivity (signal-to-noise)
• In line with the growing importance of small satellites and UAV platforms, these instruments are designed to be compact, low mass, and with modest power requirements
• HIGP has facilities to design, fabricate and test the instruments in house
Thermal Infrared Compact Imaging Spectrometer (TIRCIS)
Space Ultra-Compact Hyperspectral Imager (SUCHI)
Thermal Hyperspectral Imager (THI)
Summary