VIIRS day/night band (DNB) stray light characterization and correction

Mills, Stephen P.; Weiss, Stephanie C.; Liang, Cunren

doi:10.1117/12.2023107

Cited by 120 publications

(109 citation statements)

References 4 publications

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“…Stray light occurs at mid-to-high latitudes and the affected zone reaches its maximum latitudinal extent at the summer solstice. While there is a stray light correction (Mills, Weiss, and Liang 2013), the correction leaves residual features that would propagate into the annual product. To avoid inclusion of potentially under-or-over corrected data, we exclude stray light contaminated data from the annual composites.…”

Section: Stray Light Datamentioning

confidence: 99%

VIIRS night-time lights

Elvidge

Baugh

Zhizhin³

et al. 2017

International Journal of Remote Sensing

683

405

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The Visible Infrared Imaging Radiometer Suite (VIIRS) Day/Night Band (DNB) collects global low-light imaging data that have significant improvements over comparable data collected for 40 years by the DMSP Operational Linescan System. One of the prominent features of DNB data is the detection of electric lighting present on the Earth's surface. Most of these lights are from human settlements. VIIRS collects source data that could be used to generate monthly and annual science grade global radiance maps of human settlements with electric lighting. There are a substantial number of steps involved in producing a product that has been cleaned to exclude background noise, solar and lunar contamination, data degraded by cloud cover, and features unrelated to electric lighting (e.g. fires, flares, volcanoes). This article describes the algorithms developed for the production of high-quality global VIIRS night-time lights. There is a broad base of science users for VIIRS night-time lights products, ranging from land-use scientists, urban geographers, ecologists, carbon modellers, astronomers, demographers, economists, and social scientists. ARTICLE HISTORY

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Section: Stray Light Datamentioning

confidence: 99%

VIIRS night-time lights

Elvidge

Baugh

Zhizhin³

et al. 2017

International Journal of Remote Sensing

683

405

View full text Add to dashboard Cite

show abstract

“…In areas where the stray light correction is applied (over approximately the lower two thirds of the image) there are significant residual nonuniformities that were not corrected by the stray light correction. These nonuniformities are likely at least partly due to changes in the stray light between the time that the correction tables were determined and when they were applied [1,10,22]. There is also striping in the upper third of the image similar to what appears in Figure 1.…”

Section: Observations For Nighttime Scenesmentioning

confidence: 81%

“…Both the BB and SV are predominantly stray light [5,15,22], so this method is based on the assumption that stray light illuminates the HGA, HGB, MGS and LGS sections of the CCD focal plane array equally. This assumption will be discussed later in the paper.…”

Section: Dnb Rsb Automatic Calibration Processmentioning

confidence: 99%

“…The DNB stray light correction works very well in removing the effects of stray light, but it is not perfect [1,10,22]. There are at least four shortfalls to this method:…”

Section: Residual Uncorrected Stray Light In the Earth-viewmentioning

confidence: 99%

“…The stray light cannot be characterized for scenes with twilight illumination, so correction in these areas are estimated either through extrapolation [22] or by setting it to a constant based on the solar zenith angle [10]. Neither of these estimates are perfect, and so this results in residual over/under-correction.…”

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confidence: 99%

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VIIRS Day/Night Band—Correcting Striping and Nonuniformity over a Very Large Dynamic Range

Mills¹,

Miller

2016

J. Imaging

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Abstract:The Suomi National Polar-orbiting (NPP) Visible Infrared Imaging Radiometer Suite (VIIRS) Day-Night Band (DNB) measures visible and near-infrared light extending over seven orders of magnitude of dynamic range. This makes radiometric calibration difficult. We have observed that DNB imagery has striping, banding and other nonuniformities-day or night. We identified the causes as stray light, nonlinearity, detector crosstalk, hysteresis and mirror-side variation. We found that these affect both Earth-view and calibration signals. These present an obstacle to interpretation by users of DNB products. Because of the nonlinearity we chose the histogram matching destriping technique which we found is successful for daytime, twilight and nighttime scenes. Because of the very large dynamic range of the DNB, we needed to add special processes to the histogram matching to destripe all scenes, especially imagery in the twilight regions where scene illumination changes rapidly over short distances. We show that destriping aids image analysts, and makes it possible for advanced automated cloud typing algorithms. Manual or automatic identification of other features, including polar ice and gravity waves in the upper atmosphere are also discussed. In consideration of the large volume of data produced 24 h a day by the VIIRS DNB, we present methods for reducing processing time.

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Suomi NPP VIIRS day‐night band on‐orbit performance

et al. 2013

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[1] The Suomi National Polar-Orbiting Partnership (NPP) launched on 28 October 2011 hosts the Visible Infrared Imaging Radiometer Suite (VIIRS) sensor. The VIIRS sensor includes a day-night band (DNB) that covers almost 7 orders of magnitude in its dynamic range from full sunlit scenes to lunar-illuminated clouds. The DNB is panchromatic and covers the wavelengths from 500 nm to 900 nm. Since launch, extensive effort has gone into its characterization. We have shown that the DNB is performing extremely well, meeting most of its specifications with some minor exceedances. The DNB characteristics evaluated include the following: sampling and resolution across the swath, geolocation uncertainty, radiometric sensitivity, radiometric uncertainty, and stray light. The only significant deviation from specification involves the stray light specification. On-orbit, the characterization shows that the DNB suffers stray light level on the order of 100% L min or 3 × 10 À9 W•cm À2 •sr À1 . After algorithmic correction, the residual radiometric error was reduced to approximately 4.5 × 10 À10 W•cm À2 •sr À1 .

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VIIRS day/night band (DNB) stray light characterization and correction

Cited by 120 publications

References 4 publications

VIIRS night-time lights

VIIRS night-time lights

VIIRS Day/Night Band—Correcting Striping and Nonuniformity over a Very Large Dynamic Range

Suomi NPP VIIRS day‐night band on‐orbit performance

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