Results 221 to 230 of about 21,118,339 (275)

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
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +2 more sources

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
openaire   +1 more source

Comparison of ATMS Striping Noise Between NOAA-20 and S-NPP

IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium, 2018
The S-NPP ATMS channels have across-track striping noise, which can see explicitly in all channels from pitch maneuver observations and upper air temperature-sounding channels by the NWP O-B fields. Such a striping noise is also seen in NWP O-B fields of upper air temperature sounding channels from ATMS onboard NOAA-20.
Xiaolei Zou, Xiaoxu Tian
openaire   +2 more sources

S-NPP VIIRS instrument telemetry and calibration data trend study

SPIE Proceedings, 2015
The Suomi National Polar Orbiting Partnership (S-NPP) Visible Infrared Imaging Radiometer Suite (VIIRS) employs a large number of temperature and voltage sensors (telemetry points) to monitor instrument health and performance. We have collected data and built tools to study telemetry and calibration parameters trends. The telemetry points are organized
Ziping Frank Sun, Frank J. De Luccia, Jason C. Cardema, Gabriel Moy   +3 more
openaire   +1 more source

Lunar Calibration and Performance for S-NPP VIIRS Reflective Solar Bands

IEEE Transactions on Geoscience and Remote Sensing, 2016
The Suomi National Polar-orbiting Partnership (S-NPP) Visible Infrared Imaging Radiometer Suite (VIIRS) has successfully operated for more than three years since its launch in October 2011. Fifteen of the 22 VIIRS spectral bands are in the reflective solar spectral region, covering wavelengths from 0.41 to 2.3 $\mu\mbox{m}$ .
Xiaoxiong Xiong, Junqiang Sun, Jon Fulbright, Zhipeng Wang 0001, James J. Butler 0001   +4 more
openaire   +2 more sources

Monitoring surface type changes with S-NPP/JPSS VIIRS observations

2017 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2017
Accurate representation of currently actual land surface types at regional to global scales is critical for land surface parameterization in numerical weather, climate, hydrological and ecological models. Depending on the time scale, monitoring land surface type changes is also increasingly important for natural disaster assessment and natural ...
Xiwu Zhan, Rui Zhang, Panshi Wang, Chengquan Huang, Ivan Csiszar, Lihang Zhou, Fuzhong Weng   +6 more
openaire   +2 more sources