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HyTES: Thermal Imaging Spectrometer DevelopmentThe Jet Propulsion Laboratory has developed the Hyperspectral Thermal Emission Spectrometer (HyTES). It is an airborne pushbroom imaging spectrometer based on the Dyson optical configuration. First low altitude test flights are scheduled for later this year. HyTES uses a compact 7.5-12 micrometer m hyperspectral grating spectrometer in combination with a Quantum Well Infrared Photodetector (QWIP) and grating based spectrometer. The Dyson design allows for a very compact and optically fast system (F/1.6). Cooling requirements are minimized due to the single monolithic prism-like grating design. The configuration has the potential to be the optimal science-grade imaging spectroscopy solution for high altitude, lighter-than-air (HAA, LTA) vehicles and unmanned aerial vehicles (UAV) due to its small form factor and relatively low power requirements. The QWIP sensor allows for optimum spatial and spectral uniformity and provides adequate responsivity which allows for near 100mK noise equivalent temperature difference (NEDT) operation across the LWIR passband. The QWIP's repeatability and uniformity will be helpful for data integrity since currently an onboard calibrator is not planned. A calibration will be done before and after eight hour flights to gage any inconsistencies. This has been demonstrated with lab testing. Further test results show adequate NEDT, linearity as well as applicable earth science emissivity target results (Silicates, water) measured in direct sunlight.
Document ID
20120005568
Acquisition Source
Jet Propulsion Laboratory
Document Type
Conference Paper
Authors
Johnson, William R.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Hook, Simon J.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Mouroulis, Pantazis
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Wilson, Daniel W.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Gunapala, Sarath D.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Realmuto, Vincent
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Lamborn, Andy
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Paine, Chris
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Mumolo, Jason M.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Eng, Bjorn T.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 25, 2013
Publication Date
March 7, 2011
Subject Category
Instrumentation And Photography
Meeting Information
Meeting: IEEE Aerospace Conference
Location: Big Sky, MT
Country: United States
Start Date: March 5, 2011
End Date: March 12, 2011
Sponsors: Institute of Electrical and Electronics Engineers
Distribution Limits
Public
Copyright
Other
Keywords
remote sensing
imaging spectrometers

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