On-orbit spatial calibration performance of Landsat 8 and 9 thermal infrared sensors

Sarah Eftekharzadeh; Brian N. Wenny; Kurtis J. Thome

doi:10.1117/12.2675861

20 October 2023 On-orbit spatial calibration performance of Landsat 8 and 9 thermal infrared sensors

Sarah Eftekharzadeh, Brian N. Wenny, Kurtis J. Thome

Proceedings Volume 12686, Infrared Remote Sensing and Instrumentation XXXI; 1268603 (2023) https://doi.org/10.1117/12.2675861
Event: SPIE Optical Engineering + Applications, 2023, San Diego, California, United States

Abstract

The Landsat program has consistently provided high quality Earth imagery for over five decades. The Thermal Infrared Sensor (TIRS) on Landsat 8 and on Landsat 9, launched in Feb 2013 and Sept 2021 respectively, are nearly identical 2-band (10.9 and 12 micron) push-broom sensors extending the legacy of Landsat thermal measurements. Both Landsat 8 TIRS and Landsat 9 TIRS were built at NASA Goddard Space Flight Center. The pre-launch testing of both TIRS characterized the radiometric, spectral and spatial performance using essentially the same calibration ground support equipment system as well as analysis methodologies and techniques. Landsat 9 TIRS benefited from lessons learned from the original Landsat 8 TIRS so overall has better performance. Once on-orbit, it is challenging to evaluate the spatial calibration performance of a sensor. One technique is to use ocean coastlines in desert regions as a high contrast edge target. This paper focuses on the spatial characterization assessment of both sensors while on-orbit in terms of edge spread function, point spread function and modulation transfer function. It is shown that both Landsat 8 TIRS and Landsat 9 TIRS demonstrate consistent spatial performance over their respective mission lifetime and no significant change from the prelaunch derived estimates.

Conference Presentation

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Sarah Eftekharzadeh, Brian N. Wenny, and Kurtis J. Thome "On-orbit spatial calibration performance of Landsat 8 and 9 thermal infrared sensors", Proc. SPIE 12686, Infrared Remote Sensing and Instrumentation XXXI, 1268603 (20 October 2023); https://doi.org/10.1117/12.2675861

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