On-Orbit Characterization of S-NPP VIIRS Transmission Functions

McIntire, Jeff; Moyer, David; Efremova, Boryana; Oudrari, Hassan; Xiong, Xiaoxiong

doi:10.1109/tgrs.2014.2358935

Cited by 39 publications

(19 citation statements)

References 12 publications

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“…As part of good practice, spacecraft maneuvers are being performed to verify and update key parameters. At the beginning of the mission yaw maneuver was performed to validate and update the transmission of the SD and SDSM screen [23]. Roll maneuvers are performed on nearly monthly-basis for lunar observations for independent validation of RSB calibration using the SD and SDSM.…”

Section: Analysis Of the Viirs Calibration Algorithm And Si Traceabilitymentioning

confidence: 99%

Comparison of the Calibration Algorithms and SI Traceability of MODIS, VIIRS, GOES, and GOES-R ABI Sensors

et al. 2016

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Abstract:The radiometric calibration equations for the thermal emissive bands (TEB) and the reflective solar bands (RSB) measurements of the earth scenes by the polar satellite sensors, (Terra and Aqua) MODIS and Suomi NPP (VIIRS), and geostationary sensors, GOES Imager and the GOES-R Advanced Baseline Imager (ABI) are analyzed towards calibration algorithm harmonization on the basis of SI traceability which is one of the goals of the NOAA National Calibration Center (NCC). One of the overarching goals of NCC is to provide knowledge base on the NOAA operational satellite sensors and recommend best practices for achieving SI traceability for the radiance measurements on-orbit. As such, the calibration methodologies of these satellite optical sensors are reviewed in light of the recommended practice for radiometric calibration at the National Institute of Standards and Technology (NIST). The equivalence of some of the spectral bands in these sensors for their end products is presented. The operational and calibration features of the sensors for on-orbit observation of radiance are also compared in tabular form. This review is also to serve as a quick cross reference to researchers and analysts on how the observed signals from these sensors in space are converted to radiances.

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Section: Analysis Of the Viirs Calibration Algorithm And Si Traceabilitymentioning

confidence: 99%

Comparison of the Calibration Algorithms and SI Traceability of MODIS, VIIRS, GOES, and GOES-R ABI Sensors

et al. 2016

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show abstract

“…Figure 3 is a schematic diagram for the VIIRS SD/SDSM calibration. The BRF of the SD was measured prelaunch and validated on-orbit using the measurements with yaw maneuvers [9,15,16,32]. The on-orbit degradation of the SD BRF is tracked by an SDSM [6][7][8].…”

Section: Sd and Sdsm Calibrationmentioning

confidence: 99%

“…To prevent saturation of the RSB, a screen is placed in the front of the SD port to reduce the intensity of the sunlight. The transmittance of the screen, described by a vignetting function (VF), was also characterized prelaunch and validated on-orbit using the yaw measurements [15,16,33]. For on-orbit calibration, the SD is fully illuminated only in a short window of time in each orbit when the satellite crosses the terminator from the nightside to the dayside of the Earth and only the measurements in this short full-illumination interval can be used to derive the RSB calibration coefficients, or F-factors [3][4][5].…”

Section: Sd and Sdsm Calibrationmentioning

confidence: 99%

“…The solar declination and azimuth angles in the instrument coordinate system are usually selected to describe the incident direction. As mentioned previously, the BRF and VF were measured prelaunch [32,33] and their incident direction dependence was validated on-orbit using the on-orbit measurements from the planned yaw maneuvers [9,15,16]. Errors in the obtained BRF or VF induce seasonal oscillations in the derived F-factors, as seen in early literatures [3,4].…”

Section: Sd and Sdsm Calibrationmentioning

confidence: 99%

“…Figure 1 is a schematic diagram for VIIRS and its on-board calibrators [13]. VIIRS views the The accuracy of the RSB calibration using the SD strongly depends on that of the bidirectional reflectance factor (BRF) of the SD and that of the vignetting function (VF) of the screen placed in the front of the SD port, through which the SD is illuminated by the Sun [15,16]. The BRF changes on-orbit with time due to the degradation of the SD caused by solar exposure.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

VIIRS Reflective Solar Bands Calibration Progress and Its Impact on Ocean Color Products

Sun

Wang

2016

Remote Sensing

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Abstract:The radiometric calibration for the reflective solar bands (RSB) of the Visible Infrared Imaging Radiometer Suite (VIIRS) on board the Suomi National Polar-orbiting Partnership (SNPP) platform has reached a mature stage after four years since its launch. The characterization of the vignetting effect of the attenuation screens, the bidirectional reflectance factor of the solar diffuser, the degradation performance of the solar diffuser, and the calibration coefficient of the RSB have all been made robust. Additional investigations into the time-dependent out-of-band relative spectral response and the solar diffuser degradation non-uniformity effect have led to newer insights. In particular, it has been demonstrated that the solar diffuser (SD) degradation non-uniformity effect induces long-term bias in the SD-calibration result. A mitigation approach, the so-called Hybrid Method, incorporating lunar-based calibration results, successfully restores the calibration to achievẽ 0.2% level accuracy. The successfully calibrated RSB data record significantly impacts the ocean color products, whose stringent requirements are especially sensitive to calibration accuracy, and helps the ocean color products to reach maturity.

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On-orbit NOAA-20 VIIRS solar diffuser bidirectional reflectance distribution function and screen transmittance characterization using yaw manoeuvres and regular on-orbit SDSM data

Choi

Shao

Blonski

et al. 2020

International Journal of Remote Sensing

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On-Orbit Characterization of S-NPP VIIRS Transmission Functions

Cited by 39 publications

References 12 publications

Comparison of the Calibration Algorithms and SI Traceability of MODIS, VIIRS, GOES, and GOES-R ABI Sensors

Comparison of the Calibration Algorithms and SI Traceability of MODIS, VIIRS, GOES, and GOES-R ABI Sensors

VIIRS Reflective Solar Bands Calibration Progress and Its Impact on Ocean Color Products

On-orbit NOAA-20 VIIRS solar diffuser bidirectional reflectance distribution function and screen transmittance characterization using yaw manoeuvres and regular on-orbit SDSM data

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