Name
Abstract | ||
|---|---|---|
The Suomi National Polar-orbiting Partnership Visible Infrared Imaging Radiometer Suite (S-NPP VIIRS) instrument contains a visible imaging band designed to produce imagery during both daytime and nighttime, which is called the day-night band (DNB). The DNB is a three-gain-stage backside-illuminated charge-coupled device (CCD) with four detector arrays that aggregate the individual CCD pixels into 32 different aggregation modes across scan, yielding imagery with a roughly constant horizontal sampling interval. The highest gain stage is over 100 000 times more sensitive than the lowest gain stage; the combination of the three gain stages allows for imagery with radiances ranging from 10-10 to 10-2 W · cm-2 · sr-1. The initial DNB on-orbit calibration relies on monthly sensor special operations. This offline calibration approach results in discrete calibration and the loss of some science data. In this paper, we will present a new calibration method based solely on VIIRS onboard calibrators (OBCs). The calibrator data collected on the nighttime side of an orbit are used to determine the dark offset and the data collected over the daytime side of the orbit, and the day-night terminators are used to compute the cross-stage gain ratios. The results showed that the dark offset and the gain ratio derived from the initial method could be biased up to ten digital numbers (DN) and 12%, respectively, due to nighttime airglow and Earth scene stray light. The calibration is also continuous as calibrator data are recorded for each scan. Because no special operation and offline analysis are required, this method was approved for VIIRS operational implementation to improve the DNB radiometric calibration and sensor on-orbit operations. |
Year | DOI | Venue |
|---|---|---|
2015 | 10.1109/TGRS.2014.2321835 | IEEE T. Geoscience and Remote Sensing |
Keywords | DocType | Volume |
suomi-npp viirs day-night band on-orbit radiometric calibration method,S-NPP VIIRS instrument,DNB radiometric calibration,radiometry,geophysical techniques,dark offset,geophysical equipment,offline analysis,day–night band (DNB),Calibration,calibration,special operation,DNB,detector array,science data loss,nighttime,cross-stage gain ratio computation,nighttime image,Visible Infrared Imaging Radiometer Suite,Suomi National Polar-orbiting Partnership,day–night band (dnb),viirs operational implementation,day-night terminator,three-gain-stage backside-illuminated charge-coupled device,radiance range imagery,earth scene stray light,optical sensor,monthly sensor special operation,dnb,dnb radiometric calibration,lowest gain stage,satellite,discrete calibration,suomi national polar-orbiting partnership,initial dnb on-orbit calibration,aggregation mode,VIIRS onboard calibrators,viirs onboard calibrators,Suomi-NPP VIIRS day-night band on-orbit radiometric calibration method,nighttime airglow,day???night band (DNB),Visible Infrared Imaging Radiometer Suite (VIIRS),s-npp viirs instrument,daytime image,calibrator data,highest gain stage,OBC,horizontal sampling interval,sensor on-orbit operation,charge-coupled devices,offline calibration approach,Earth scene stray light,calibration method,orbit nighttime side,visible infrared imaging radiometer suite,individual ccd pixel,initial DNB on-orbit calibration,ten digital number biased,dark offset determination,obc,day???night band (dnb),individual CCD pixel,visible imaging band design,visible infrared imaging radiometer suite (viirs),VIIRS operational implementation,orbit daytime side | Journal | 53 |
Issue | ISSN | Citations |
1 | 0196-2892 | 7 |
PageRank | References | Authors |
0.95 | 0 | 5 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Shihyan Lee | 1 | 32 | 8.44 |
| Jeffrey McIntire | 2 | 31 | 8.38 |
| Hassan Oudrari | 3 | 38 | 12.13 |
| Thomas Schwarting | 4 | 22 | 5.37 |
| Xiaoxiong Xiong | 5 | 427 | 123.62 |