Results 21 to 30 of about 270,336 (291)

Radiometric Cross-Calibration of GF-1 PMS Sensor with a New BRDF Model

Remote Sensing, 2019
On-orbit radiometric calibration of a space-borne sensor is of great importance for quantitative remote sensing applications. Cross-calibration is a common method with high calibration accuracy, and the core and emphasis of this method is to select the ...
Qiyue Liu, Tao Yu, Hailiang Gao
doaj   +3 more sources

Radiometric Cross-Calibration of GF-4 PMS Sensor Based on Assimilation of Landsat-8 OLI Images

Remote Sensing, 2017
Earth observation data obtained from remote sensors must undergo radiometric calibration before use in quantitative applications. However, the large view angles of the panchromatic multispectral sensor (PMS) aboard the GF-4 satellite pose challenges for ...
Yepei Chen, Kaimin Sun, Deren Li, Ting Bai, Chengquan Huang   +4 more
doaj   +3 more sources

Reusable cross-calibration workflows

, 2019
At the talk presented on International Astrophysical Consortium of High Energy Calibration (IACHEC) meeting I describe a concept and a prototype of reusable cross-calibration workflows for inter-calibration of astrophysical experimentation. I suggest to define and allow a dynamically composed unit tests for data and data analysis, establishing a ...
Volodymyr Savchenko (4951027), Volodymyr Savchenko   +1 more
openaire   +2 more sources

Concept of a Satellite Cross-Calibration Radiometer for In-Orbit Calibration of Commercial Optical Satellites

Remote Sensing
The satellite Earth observation (EO) sector is burgeoning with hundreds of commercial satellites being launched each year, delivering a rich source of data that could be exploited for societal benefit.
Medhavy Thankappan, Jon Christopherson, Simon Cantrell, Robert Ryan, Mary Pagnutti, Courtney Bright, Denis Naughton, Kathryn Ruslander, Lan-Wei Wang, David Hudson, Jerad Shaw, Shankar Nag Ramaseri Chandra, Cody Anderson   +12 more
doaj   +2 more sources

SAR Radiometric Cross-Calibration Based on Multiple Pseudoinvariant Calibration Sites With Extensive Backscattering Coefficient Range

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Synthetic aperture radar (SAR) radiometric cross-calibration achieves the calibration of uncalibrated satellites by employing calibrated satellites to illuminate the same ground targets.
Yongsheng Zhou, Xiang Chen, Qiang Yin, Fei Ma, Fan Zhang   +4 more
doaj   +2 more sources

Radiometric Cross-Calibration of Hyperspectral Microsatellites Using Spectral Homogeneity Factor

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
On-orbit radiometric calibration is essential for the quantitative use of hyperspectral satellite and sensor monitoring, but its frequency is constrained by available calibration sites, especially for microsatellites with limited imaging capabilities. To
Siqing Zhang, Keyi Rao, Zhaocong Wu, Shaoju Wang, Zhixiong Dai, Ruixin Fang, Kexin Wang   +6 more
doaj   +2 more sources

Calibration of spaceborne polarimetric SAR data using a genetic alogrithm [PDF]

, 2009
Calibration method for spaceborne polarimetric SAR data using a genetic algorithm is discussed in this paper. Recently some satellites which have polarimetric synthetic aperture radar were launched, and the polarimetric data analysis techniques are being
Toshifumi Moriyama, Moriyama, Toshifumi
core   +1 more source

Polarimetric calibration strategy for long-duration imaging with a ground-based SAR [PDF]

, 2005
The Ground-Based Synthetic Aperture Radar (GB-SAR) facility in the UK provides high-resolution, fully polarimetrically calibrated L- through X-band SAR imagery, principally of targets of remote sensing interest such as soils and vegetation.
Morrison, Keith, Cookmartin, Geoff, J C Bennett, Bennett, J. C., Race, A., Quegan, Shaun, K. Morrison, A. Race, G. Cookmartin, S. Quegan   +9 more
core   +1 more source

Absolute point dose measurement of stereotactic radiotherapy plan for ultra-small tumors

Fushe yanjiu yu fushe gongyi xuebao, 2021
A real-time ion-chamber cross-calibration method was proposed to achieve accurate absolute point dose measurements to plan stereotactic radiotherapy (SRT) for ultra-small volume tumors.
CHEN Yuanhua, LU Zhongjie
doaj   +1 more source

Radiometric Cross-Calibration of Tiangong-2 MWI Visible/NIR Channels over Aquatic Environments using MODIS

Remote Sensing, 2018
The Moderate-Resolution Wide-Wavelength Imager (MWI), onboard the Tiangong-2 (TG-2) Space Lab, is an experimental satellite sensor designed for the next-generation Chinese ocean color satellites.
Qu Zhou, Liqiao Tian, Jian Li, Qingjun Song, Wenkai Li   +4 more
doaj   +1 more source