Custom VSWIR atmospheric correction with topographic compensation

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Method synopsis

A custom atmospheric correction procedure for VSWIR hyperspectral data that uses ACORN-6LX software with 200-meter processing kernels incorporating local topography and view-angle geometry to account for variable flight conditions within each flightline.

Synthesized from method descriptions across 1 paper using this protocol.

Procedure as described in the canonical source

Steps below were extracted from the paper that introduces this protocol — Integrating airborne remote sensing and field campaigns for ecology and Earth system science (2020), Methods in Ecology. Implementations in other papers (listed below) may differ.

1. VSWIR data atmospheric correction
   Atmospherically corrected radiance data to generate estimates of apparent reflectance spectra using Atmospheric CORrection Now (ACORN-6LX) software package, which uses MODTRAN lookup tables and estimates of atmospheric and surface water derived from wavelengths in 950 and 1150 nm regions. Utilized custom method that calculated reflectance in 200 m kernels with all local topography and view-angle geometry information, effectively accounting for variable flight conditions within each line.
   Quantities: 200 m processing kernels, 950 and 1150 nm wavelength regions usedDuration: Post-flight data processingConditions: Accounting for variable flight conditions and topographic effects
   Equipment: ACORN-6LX software, MODTRAN lookup tables

Typical Equipment

• ACORN-6LX software
• MODTRAN lookup tables

Output Measurements

• atmospherically corrected reflectance spectra
• water vapor estimates
• surface liquid water content

Papers Using This Protocol (1)

Species Studied With This Protocol

Places Where Used