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Prelaunch Spectral Characterization of the Operational Land Imager-2The Landsat-9 satellite, launched in September 2021, carries the Operational Land Imager-2 (OLI-2) as one of its payloads. This instrument is a clone of the Landsat-8 OLI and its mission is to continue the operational land imaging of the Landsat program. The OLI-2 instrument is not significantly different from OLI though the instrument-level pre-launch spectral characterization process was much improved. The focal plane modules used on OLI-2 were manufactured as spares for OLI and much of the spectral characterization of the components was performed for OLI. However, while the spectral response of the fully assembled OLI was characterized by a double monochromator system, the OLI-2 spectral characterization made use of the Goddard Laser for Absolute Measurement of Radiance (GLAMR). GLAMR is a system of tunable lasers that cover 350–2500 nm which are fiber-coupled to a 30 in integrating sphere permanently monitored by NIST-traceable radiometers. GLAMR allowed the spectral characterization of every detector of the OLI-2 focal plane in nominal imaging conditions. The spectral performance of the OLI-2 was, in general, much better than requirements. The final relative spectral responses (RSRs) represent the best characterization any Landsat instrument spectral response. This paper will cover the results of the spectral characterization from the component-level to the instrument-level of the Landsat-9 OLI-2.
Document ID
20240002418
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
Julia A. Barsi
(Goddard Space Flight Center Greenbelt, United States)
Eric Donley
(Ball (United States) Broomfield, Colorado, United States)
Michelle Goldman
(Ball (United States) Broomfield, Colorado, United States)
Thomas Kampe
(Ball (United States) Broomfield, Colorado, United States)
Brian L. Markham
(Goddard Space Flight Center Greenbelt, United States)
Brendan McAndrew
(Goddard Space Flight Center Greenbelt, United States)
Joel McCorkel
(Goddard Space Flight Center Greenbelt, United States)
Eric Morland
(Ball (United States) Broomfield, Colorado, United States)
Jeffrey A. Pedelty
(Bay Engineering Innovation Greenbelt, United States)
James Pharr
(Northrop Grumman (United States) Falls Church, United States)
Michael R. Rodriguez
(Hexagon (United States) Madison, Alabama, United States)
Timothy M. Shuman
(Fibertek (United States) Herndon, Virginia, United States)
Cameron Stutheit
(Ball (United States) Broomfield, Colorado, United States)
Andrei B. Sushkov
(Genesis Engineering Solutions Lanham, Maryland, United States)
Date Acquired
February 26, 2024
Publication Date
March 11, 2024
Publication Information
Publication: Remote Sensing
Publisher: MDPI
Volume: 16
Issue: 6
Issue Publication Date: March 2, 2024
e-ISSN: 2072-4292
Subject Category
Earth Resources and Remote Sensing
Funding Number(s)
WBS: 372720.04.03.01
CONTRACT_GRANT: NNG16HS00C
CONTRACT_GRANT: SPEC5722
CONTRACT_GRANT: 80GSFC23CA048
CONTRACT_GRANT: 80GSFC20C0044
CONTRACT_GRANT: NNG10XA01C
CONTRACT_GRANT: 80GSFC21CA007
Distribution Limits
Public
Copyright
Portions of document may include copyright protected material.
Technical Review
Single Expert
Keywords
Landsat-9
OLI-2
GLAMR
spectral characterization
relative spectral response
tunable laser
calibration
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