On-Orbit Radiometric Performance of the Landsat 8 Thermal Infrared Sensor
"> Figure 1
<p>NEdL for all detectors in each band calculated from OBC data at a temperature of 300 K. The requirement limits of 0.059 and 0.049 <span class="html-italic">W</span><span class="html-italic">/m</span><sup>2</sup><span class="html-italic">/sr</span><span class="html-italic">/µm</span> for band10 and band11, respectively, are indicated on the graph.</p> "> Figure 2
<p>NEdT for all detectors in each band calculated from OBC data at a temperature of 300 K. The requirement limit of 0.4 K is indicated on the graph.</p> "> Figure 3
<p>Best and worst case coherent noise over all detectors for band10 (<b>top</b>) and band11 (<b>bottom</b>). The red solid line represents the worst case coherent noise and the green solid line represents the best case noise. The solid black line represents the artifact baseline (via Equation (1)). The upper two dotted lines are the noise-floor-adjusted <span class="html-italic">visibility</span> thresholds for the best case (green) and the worst case (red). The lower two dotted lines are the noise-floor-adjusted <span class="html-italic">invisibility</span> thresholds for the best case (green) and the worst case (red).</p> "> Figure 4
<p>Standard deviation for all detectors in the dark band in terms of counts over continuous 36 minutes of image collection.</p> "> Figure 5
<p>Average counts for the entire dark band over continuous 36 minutes of image collection (151,200 frames).</p> "> Figure 6
<p>The variation of radiance (1<span class="html-italic">σ</span>) in both bands while viewing deep space continuously for 36 minutes of image collection. The approximate change in brightness temperature is shown on the right hand axis.</p> "> Figure 7
<p>The variation of radiance (1<span class="html-italic">σ</span>) in both bands while viewing the OBC at a temperature of 270 K continuously for 36 minutes of image collection. The approximate variation in brightness temperature is shown on the right hand axis.</p> "> Figure 8
<p>The minimum and maximum variation of the band10 (<b>top</b>) and band11 (<b>bottom</b>) background response of 18 space collects over 1.5 orbits expressed as a difference in radiance from the mean. The approximate change in brightness temperature is shown on the right hand axis.</p> "> Figure 9
<p>Variation from the average background signal for both bands as a function of WRS row. Orbital day is approximately rows 1–124 while orbital night is approximately rows 125–248. The effect is correlated with the temperature of the SSM structure assembly. An increase in structure temperature produces a higher optical background signal that is detected on the focal plane.</p> "> Figure 10
<p>The minimum and maximum variation of the band10 (<b>top</b>) and band11 (<b>bottom</b>) response of 18 OBC collects over 1.5 orbits expressed as a difference in radiance from the mean. The approximate change in brightness temperature is shown on the right hand axis.</p> "> Figure 11
<p>The average instrument response of band10 (<b>top</b>) and band11 (<b>bottom</b>) to the OBC at a set point temperature of 295 K over the course of one year. The discontinuities are due to factors such as temperature fluctuations of the OBC, suspension of imaging activities, and day/night fluctuations in background signal levels. In general there is a 0.2% per year trend in band10 and a 0.1% per year trend in band11.</p> "> Figure 12
<p>TIRS band11 image of Path/Row 173/41 (14 August 2013) in the Red Sea. The image data from the three focal plane arrays is evident due to banding in the across track direction.</p> ">
Abstract
:1. Introduction
1.1. Instrument Overview
1.2. Radiometric Calibration
2. Instrument On-Orbit Performance
2.1. Noise
2.1.1. Noise Equivalent Change in Radiance/Temperature
Source Temperature | Band 10 | Band 11 | |||
---|---|---|---|---|---|
Measured | Requirement Limit | Measured | Requirement Limit | ||
240 K * | 0.0054 | 0.059 | 0.0053 | 0.049 | |
270 K | 0.0062 | 0.059 | 0.0058 | 0.049 | |
300 K | 0.0070 | 0.059 | 0.0064 | 0.049 | |
320 K | 0.0075 | 0.059 | 0.0072 | 0.049 |
Source
Temperature | Band 10 | Band 11 | |||
---|---|---|---|---|---|
Measured | Requirement Limit | Measured | Requirement Limit | ||
240 K * | 0.074 | 0.80 | 0.078 | 0.71 | |
270 K | 0.057 | 0.56 | 0.060 | 0.53 | |
300 K | 0.049 | 0.40 | 0.052 | 0.40 | |
320 K | 0.045 | 0.35 | 0.051 | 0.35 |
2.1.2. Coherent Noise
2.2. Stability
2.2.1. Dark Band Variation over 36 Min
2.2.2. Background Variation over 36 Minutes
2.2.3. OBC Signal Variation over 36 Minutes
2.2.4. Orbital Stability
2.2.5. Long Term Stability and Trends
2.3. Uniformity
2.4. Absolute Radiometric Response
3. Summary
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Montanaro, M.; Levy, R.; Markham, B. On-Orbit Radiometric Performance of the Landsat 8 Thermal Infrared Sensor. Remote Sens. 2014, 6, 11753-11769. https://doi.org/10.3390/rs61211753
Montanaro M, Levy R, Markham B. On-Orbit Radiometric Performance of the Landsat 8 Thermal Infrared Sensor. Remote Sensing. 2014; 6(12):11753-11769. https://doi.org/10.3390/rs61211753
Chicago/Turabian StyleMontanaro, Matthew, Raviv Levy, and Brian Markham. 2014. "On-Orbit Radiometric Performance of the Landsat 8 Thermal Infrared Sensor" Remote Sensing 6, no. 12: 11753-11769. https://doi.org/10.3390/rs61211753