Results 21 to 30 of about 1,820 (246)

High Accuracy Solar Diffuser BRDF Measurement for On-Board Calibration in the Solar Reflective Band

Remote Sensing, 2023
In the solar reflective band, an on-board calibration method based on a solar diffuser (SD) can realize full aperture, full field of view, and end-to-end absolute radiometric calibration of optical remote sensors. The SD’s bidirectional reflectance distribution function (BRDF) is a key parameter that affects the accuracy of the on-board calibration ...
Zhiyuan Zhang, Hongyao Chen, Wenxin Huang, Xiaobing Zheng, Liming Zhang   +4 more
openaire   +2 more sources

Mission-Long Recalibrated Science Quality Suomi NPP VIIRS Radiometric Dataset Using Advanced Algorithms for Time Series Studies

Remote Sensing, 2021
Suomi NPP has been successfully operating since its launch on 28 October 2011. As one of the major payloads, along with microwave and infrared sounders (Advanced Technology Microwave Sounder (ATMS), Cross-track Infrared Sounder (CrIS)), and ozone mapping/
Changyong Cao, Bin Zhang, Xi Shao, Wenhui Wang, Sirish Uprety, Taeyoung Choi, Slawomir Blonski, Yalong Gu, Yan Bai, Lin Lin, Satya Kalluri   +10 more
doaj   +1 more source

Crosstalk Effect in SNPP VIIRS

Remote Sensing, 2017
An investigation has been carried out to examine the crosstalk contamination in the Visible Infrared Imaging Radiometer Suite (VIIRS) onboard the Suomi National Polar-orbiting Partnership (SNPP) spacecraft.
Junqiang Sun, Menghua Wang
doaj   +1 more source

Initial Stability Assessment of S-NPP VIIRS Reflective Solar Band Calibration Using Invariant Desert and Deep Convective Cloud Targets

Remote Sensing, 2014
The latest CERES FM-5 instrument launched onboard the S-NPP spacecraft will use the VIIRS visible radiances from the NASA Land Product Evaluation and Analysis Tool Elements (PEATE) product for retrieving the cloud properties associated with its TOA flux ...
Rajendra Bhatt, David R. Doelling, Aisheng Wu, Xiaoxiong (Jack) Xiong, Benjamin R. Scarino, Conor O. Haney, Arun Gopalan   +6 more
doaj   +1 more source

Sidewall Profile Dependent Nanostructured Ultrathin Solar Cells With Enhanced Light Trapping Capabilities

IEEE Photonics Journal, 2020
Theoretical studies of ultra-thin silicon solar cells with cylindrical, conical and parabolic surface nanostructures inherited from natural self-assembled anodic alumina oxide (NSA-AAO) were performed by finite-difference time-domain (FDTD) method.
Tangyou Sun, Jie Tu, Le Cao, Tao Fu, Qi Li, Fabi Zhang, Gongli Xiao, Yonghe Chen, Haiou Li, Xingpeng Liu, Zhiqiang Yu, Yue Li, Wenning Zhao   +12 more
doaj   +1 more source

Early Radiometric Assessment of NOAA-21 Visible Infrared Imaging Radiometer Suite Reflective Solar Bands Using Vicarious Techniques

Remote Sensing
The VIIRS instrument on the JPSS-2 (renamed NOAA-21 upon reaching orbit) spacecraft was launched in November 2022, making it the third sensor in the VIIRS series, following those onboard the SNPP and NOAA-20 spacecrafts, which are operating nominally. As
Aisheng Wu, Xiaoxiong Xiong, Qiaozhen Mu, Amit Angal, Rajendra Bhatt, Yolanda Shea   +5 more
doaj   +1 more source

A method for monitoring solar diffuser’s bidirectional reflectance distribution function degradation in geostationary orbit

European Journal of Remote Sensing, 2020
The advanced geosynchronous radiation imager (AGRI) is a geostationary sensor whose reflective solar band is calibrated by a solar diffuser (SD). The SD bidirectional reflectance distribution function (BRDF) degrades over time in the space environment ...
Wei Wang, Li-Ming Zhang, Weiwei Xu, Xiao-Long Si, Wen-Xin Huang   +4 more
doaj   +1 more source

Time-dependent response versus scan angle for MODIS reflective solar bands [PDF]

SPIE Proceedings, 2009
The MODIS instrument is currently operated onboard NASA's Terra and Aqua spacecrafts, launched in December 1999 and May 2002, respectively. MODIS has 36 spectral bands, among which 20 are the Reflective Solar Bands (RSB), covering a spectral range from 0.41 to 2.2 microns.
Junqiang Sun, Xiaoxiong Xiong, Amit Angal, Hongda Chen 0003, Aisheng Wu, Xu Geng   +5 more
openaire   +1 more source

Evaluation of NOAA-20 VIIRS Reflective Solar Bands Early On-Orbit Performance Using Daily Deep Convective Clouds Recent Improvements

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
The visible infrared imaging radiometer suite (VIIRS) onboard the National Oceanic and Atmospheric Administration - 20 (NOAA-20) satellite was successfully launched in November 2017.
Wenhui Wang, Changyong Cao
doaj   +1 more source

Methodology Development for Calibration Assessment Using Quasi‐Deep Convective Clouds With Application to Aqua MODIS TEB

Earth and Space Science, 2020
Deep convective clouds (DCC) are identified by using a combination of brightness temperature (BT) and visible reflectance thresholds. Moreover, it is common practice to use daytime DCC measurements for the calibration assessment of reflective solar and ...
Tiejun Chang, Xiaoxiong Xiong, Ashish Shrestha, Carlos Perez Diaz   +3 more
doaj   +1 more source