Landsat 9 OLI 2 focal plane subsystem: design, performance, and status

Kevin J. Malone; Ronald J. Schrein; M. Scott Bradley; Ronda Irwin; Barry Berdanier; Eric Donley

doi:10.1117/12.2273058

5 September 2017 Landsat 9 OLI 2 focal plane subsystem: design, performance, and status

Kevin J. Malone, Ronald J. Schrein, M. Scott Bradley, Ronda Irwin, Barry Berdanier, Eric Donley

Proceedings Volume 10402, Earth Observing Systems XXII; 1040206 (2017) https://doi.org/10.1117/12.2273058
Event: SPIE Optical Engineering + Applications, 2017, San Diego, California, United States

Abstract

The Landsat 9 mission will continue the legacy of Earth remote sensing that started in 1972. The Operational Land Imager 2 (OLI 2) is one of two instruments on the Landsat 9 satellite. The OLI 2 instrument is essentially a copy of the OLI instrument flying on Landsat 8. A key element of the OLI 2 instrument is the focal plane subsystem, or FPS, which consists of the focal plane array (FPA), the focal plane electronics (FPE) box, and low-thermal conductivity cables. This paper presents design details of the OLI 2 FPS. The FPA contains 14 critically-aligned focal plane modules (FPM). Each module contains 6 visible/near-IR (VNIR) detector arrays and three short-wave infrared (SWIR) arrays. A complex multi-spectral optical filter is contained in each module. Redundant pixels for each array provide exceptional operability. Spare detector modules from OLI were recharacterized after six years of storage. Radiometric test results are presented and compared with data recorded in 2010. Thermal, optical, mechanical and structural features of the FPA will be described. Special attention is paid to the thermal design of the FPA since thermal stability is crucial to ensuring low-noise and low-drift operation of the detectors which operate at -63°C. The OLI 2 FPE provides power, timing, and control to the focal plane modules. It also digitizes the video data and formats it for the solid-state recorder. Design improvements to the FPA-FPE cables will be discussed and characterization data will be presented. The paper will conclude with the status of the flight hardware assembly and testing.

Conference Presentation

Citation Download Citation

Kevin J. Malone, Ronald J. Schrein, M. Scott Bradley, Ronda Irwin, Barry Berdanier, and Eric Donley "Landsat 9 OLI 2 focal plane subsystem: design, performance, and status", Proc. SPIE 10402, Earth Observing Systems XXII, 1040206 (5 September 2017); https://doi.org/10.1117/12.2273058

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available