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Adaptive Atmospheric Light Estimation for Dehazing via a Novel Decoupled Scattering Model with Neutral-Pixel and Visual-Depth Priors. [PDF]

J Imaging
Zhu Z, Zhang X.
europepmc   +1 more source

A primer on sleep neuroscience for psychiatry. [PDF]

NPP Digit Psychiatry Neurosci
Saletin JM, Righi GR.
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S-NPP VIIRS calibration and performance update

2016 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2016
The first VIIRS instrument has successfully operated for more than 4 years on-board the Suomi-National Polar-orbiting Partnership (S-NPP) spacecraft. The sensor data records (SDR) derived from VIIRS on-orbit observations have been used to produce many environment data records (EDR), enabling a wide range of applications by the users from operational ...
Xiaoxiong Xiong, Changyong Cao, Zhipeng Wang 0001, Ning Lei, Kwo-Fu Chiang, Slawomir Blonski, James J. Butler 0001   +6 more
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An overview of S-NPP VIIRS lunar calibration

2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2015
The S-NPP VIIRS has operated for more than 3.5 years since its launch in October 2011. The VIIRS reflective solar bands (RSB) calibration is performed by an on-board solar diffuser (SD) and a solar diffuser stability monitor (SDSM). In addition, lunar observations have been used to monitor the RSB on-orbit calibration stability. Since launch, more than
Xiaoxiong Xiong, Jon Fulbright, Zhipeng Wang 0001, James J. Butler 0001   +3 more
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On-Orbit Characterization of S-NPP VIIRS Transmission Functions

IEEE Transactions on Geoscience and Remote Sensing, 2015
The Suomi National Polar-orbiting Partnership (S-NPP) spacecraft executed a series of yaw maneuvers on February 15 and 16, 2012. Data collected during these maneuvers were used to characterize the transmission functions of the Visible Infrared Imager Radiometer Suite (VIIRS) instrument solar diffuser (SD) and solar diffuser stability monitor (SDSM ...
Jeffrey McIntire, David Moyer, Boryana Efremova, Hassan Oudrari, Xiaoxiong Xiong   +4 more
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Realistic Covariance Generation for the S-NPP Spacecraft

SpaceOps 2016 Conference, 2016
We present several different methods for generating realistic predictive covariance, including Monte-Carlo simulations and more direct linear methods which require the addition of process noise. The Monte-Carlo simulation starts with an epoch uncertainty sample basis and propagates each trial to a time of interest in the future. The variance-covariance
Shiju Nair, Matt Duncan, Joshua Wysack, Chris Kilzer, Garland L. Dixon, Robert Harpold, James Winsley, Anthony Galvan, Travis Lechtenberg   +8 more
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Prelaunch Radiometric Characterization and Calibration of the S-NPP VIIRS Sensor

IEEE Transactions on Geoscience and Remote Sensing, 2015
The Visible Infrared Imaging Radiometer Suite (VIIRS) is a key instrument onboard the Suomi National Polar-orbiting Partnership (S-NPP) spacecraft that was launched on October 28, 2011. VIIRS is designed to provide top of the atmosphere radiometric measurements and imaging of the entire planet Earth twice daily. It is a wide-swath (3040 km) cross-track
Hassan Oudrari, Jeffrey McIntire, Xiaoxiong Xiong, James J. Butler 0001, Shihyan Lee, Ning Lei, Thomas Schwarting, Junqiang Sun   +7 more
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Prediction of S-NPP VIIRS DNB stray light correction

Earth Observing Systems XXII, 2017
The VIIRS Day-Night-Band (DNB) is a panchromatic band with three gain stages used for delivering imagery under conditions ranging from daylight to low light nighttime scenes. Early in the S-NPP mission a gray haze was observed in some nighttime DNB imagery with the cause determined to be stray light contamination.
Chengbo Sun, Thomas Schwarting, Hongda Chen 0003, Kwo-Fu Chiang, Xiaoxiong Xiong   +4 more
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Prediction of S-NPP VIIRS DNB gains and dark offsets

Earth Observing Systems XXII, 2017
We describe the methodology for predicting the S-NPP VIIRS Day-Night-Band (DNB) detector gains and dark offsets. During the first 5 years of operation, the DNB has shown recognizable patterns in these calibration parameters. These patterns can be decomposed into two distinctive components: degradation and oscillation. We fit the historical data using a
Chengbo Sun, Thomas Schwarting, Hongda Chen 0003, Kwo-Fu Chiang, Xiaoxiong Xiong   +4 more
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Comparison of S-NPP VIIRS and PLEIADES lunar observations

SPIE Proceedings, 2015
The first VIIRS instrument was launched on-board the S-NPP satellite in October 2011. It has a total of 15 reflective solar bands (RSB), which include a day-night band (DNB). The VIIRS RSB are calibrated each orbit by an on-board solar diffuser and regularly scheduled lunar observations.
Xiaoxiong Xiong, Sophie Lachérade, Ouahid Aznay, Bertrand Fougnie, Jon Fulbright, Zhipeng Wang   +5 more
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