Hyperion L1Gst, Zigzag spectral profile after Radiometric

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Last Post 07 Feb 2017 01:03 AM by anon

Hyperion L1Gst, Zigzag spectral profile after Radiometric Calibration

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anon

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07 Feb 2017 01:03 AM
Hyperion L1Gst geotiff file showing Zigzag spectral profile in optical and NIR range after Radiometric Calibration. Though before calibration the profile shows normal curve. how to correct it?

MariM

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07 Feb 2017 08:55 AM
What version of ENVI are you using? Are you able to open the Hyperion data using the _mtl.txt? There is some overlap in hyperion bands and it may be that what you are seeing is the overlapping bands. I believe this behavior was improved in ENVI 5.4.

Deleted User

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08 Feb 2017 12:22 PM
Dear, I am using ENVI 5.2. It can open _MTL_L1GST.TXT easily. overlap occurs at about 500-800 nm wavelength region only. please help me.

MariM

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09 Feb 2017 10:01 AM
Do you have access to a newer version of ENVI? I am not seeing this behavior in the latest version. I was able to use radiometric correction on a Hyperion L1T image and the resulting spectra look reasonable.

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