Open AccessThe AVIRIS-4 Airborne Imaging Spectrometer
Author(s) -
Andreas Hueni,
Sven Geier,
Marius Vogtli,
Jesse LaHaye,
Josquin Rosset,
Dominic Berger,
Luc J. Sierro,
Laurent V. Jospin,
David R. Thompson,
Daniel Schlapfer,
Robert O. Green,
Teddy Loeliger,
Jan Skaloud,
Michael E. Schaepman
Publication year - 2025
Publication title -
ieee geoscience and remote sensing letters
Language(s) - English
Resource type - Magazines
SCImago Journal Rank - 1.372
H-Index - 114
eISSN - 1558-0571
pISSN - 1545-598X
DOI - 10.1109/lgrs.2025.3572349
Subject(s) - geoscience , power, energy and industry applications , communication, networking and broadcast technologies , components, circuits, devices and systems , computing and processing , signal processing and analysis
The Airborne Visible/Infrared Imaging Spectrometer-4 (AVIRIS-4) represents the next generation in the series of airborne imaging spectrometers built by NASA JPL. Commissioned by the Swiss ARES research consortium, AVIRIS-4 is geared towards delivering cutting-edge imaging spectroscopy data for scientific and practical applications as a replacement for its predecessor APEX. AVIRIS-4 is based on a Dyson-type imaging spectrometer design, also employed by NASA-operated AVIRIS-3 and EMIT, and integrates a scaled two-mirror telescope housed in a compact vacuum vessel. This enables airborne measurements in unpressurized aircraft at altitudes ranging from 500 m to 7620 m, achieving image resolutions between 0.3 and 4.5 m with a field of view of 40.2° in 1241 spatial pixels. AVIRIS-4 surpasses previous state-of-the-art sensor heads in signal-to-noise ratio performance and features a spectral range of 375 to 2504 nm and 7.4 nm spectral sampling. The operation, data capture and mission control hardware as well as the calibration and data processing software is developed by UZH, EPFL, and ZHAW. This paper outlines the design and calibration strategies implemented in AVIRIS-4’s development and highlights its performance during its first year of operation in 2024.