Hyperspectral remote sensing sensors
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Hyperspectral remote sensing - Sensors. Contact: [email protected] Mirza Muhammad Waqar. Contents. Hyperspectral Instruments AVIRIS (Airborne Visible Infrared Imaging Spectrometer) CASI‐2 (Compact Airborne Spectrographic Imager‐2) Hyperion HyMap CASI.

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Hyperspectral remote sensing - Sensors

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Hyperspectral remote sensing sensors

Hyperspectral remote sensing - Sensors

Contact: [email protected]

Mirza Muhammad Waqar


Contents

Contents

  • Hyperspectral Instruments

    • AVIRIS (Airborne Visible Infrared Imaging Spectrometer)

    • CASI‐2 (Compact Airborne Spectrographic Imager‐2)

    • Hyperion

    • HyMap

    • CASI


Hyperspectral instruments

Hyperspectral Instruments

  • AVIRIS (Airborne Visible Infrared Imaging Spectrometer)

  • MODIS (Moderate Resolution Imaging Spectroradiometer)

  • CASI‐2 (Compact Airborne Spectrographic Imager‐2)

  • Hyperion

  • Daedelus Instruments

  • HyMap

  • CASI


Aviris airborne visible infrared imaging spectrometer

AVIRIS (Airborne Visible Infrared Imaging Spectrometer)

  • The Airborne Visible InfraRed Imaging Spectrometer (AVIRIS) was designed and built by the NASA Jet Propulsion Laboratory (JPL).

  • It is a whiskbroom scanner, and it flies on several airborne platforms. 

  • The swath and spatial resolution depend on the flying height and over-ground speed of the aircraft.


Hyperspectral remote sensing sensors

Cont…

  • On the NASA ER-2 jet at 20 km above MSL, AVIRIS covers an 11 km swath at 20 m GSD.

  • On a DeHaviland Twin Otter turboprop at 4 km AGL, AVIRIS covers a 2 km swath at 4 m GSD.

  • 224 contiguous spectral channels

  • Radiometric resolution: 12 bit


Hyperspectral remote sensing sensors

Note

  • AVIRIS is flown primarily for NASA-funded scientists and researchers. Graduate students can obtain small amounts of existing AVIRIS data at no cost.

  • http://aviris.jpl.nasa.gov/data/grad_research.html


Casi 2 compact airborne spectrographic imager 2

CASI-2 (Compact Airborne Spectrographic Imager-2)

  • The Compact Airborne Imaging Spectrometer (CASI) is built by ITRES Research Ltd., of Canada

  •  It can collect data in 14-bit format for 288 bands at 2.5 nm nomi

  • However, the overall spectral range is limited to 650 nm, which is adjustable anywhere between 400 nm (blue) and 1050 nm (near-IR).nal intervals.

  • GSD in the range of 25 cm - 1.5 m


Hyperion

Hyperion

  • The Hyperion hyperspectral imaging sensor flies on the NASA Earth Observing-1 (EO-1) spacecraft launched in late 2000.

  • Pushbroom technology gives Hyperion a longer target look time than a scanning radiometer, which helps to overcome the signal-to-noise problem.


Hyperspectral remote sensing sensors

Cont…


Leisa

LEISA


Hymap

HyMap

  • HyVista Corporation, of Sydney, Australia, commercially operates a 128-band whiskbroom hyperspectral scanner.

  •  It operates in the familiar spectral range of 400 - 2500 nm

    • but with a bandwidth of 15-20 nm rather than 10 as for AVIRIS and Hyperion

  •  It records data in 12 - 16 bit format. 

  • Spatial resolution range 3-10 m.


Applications of hyperspectral data

Applications of Hyperspectral Data

  • Atmosphere: water vapor, cloud properties, aerosols

  • Ecology: chlorophyll, leaf water, cellulose, pigments

  • Geology: mineral and soil types

  • Coastal waters: chlorophyll, phytoplankton, dissolved

  • Organic materials, suspended sediments, bathymetry

  • Snow/ice: snow cover fraction, grain size, melting

  • Biomass burning: subpixel temperatures, smoke

  • Commercial: mineral exploration, agriculture and forest production


Questions discussion

Questions & Discussion


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