Results 41 to 50 of about 1,017 (151)

Radiation Cross Calibration Based on GF-1 Side Swing Angle [PDF]

, 2019
Radiation cross-calibration is an effective method to check and verify the accuracy and stability of sensor measurements. Satellites with high radiation accuracy are used to calibrate satellites with low radiation accuracy.
Chuanyang Tian, Hai Huan, John J. Qu, Wen Shao, Yong Xie, Zui Tao   +5 more
core   +2 more sources

Automatic Caption Generation for Aerial Images: A Survey [PDF]

, 2023
Aerial images have attracted attention from researcher community since long time. Generating a caption for an aerial image describing its content in comprehensive way is less studied but important task as it has applications in agriculture, defence ...
Kharate, Gajanan K., Mondhe, Parag Jayant, Satone, Manisha P.   +2 more
core   +2 more sources

Wave retrieval from quad-polarized Chinese Gaofen-3 SAR image using an improved tilt modulation transfer function

Geo-spatial Information Science
An accurate Modulation Transfer Function (MTF) is essential for Synthetic Aperture Radar (SAR) wave spectra retrieval. This study aimed to investigate the performance of a quad-polarized wave retrieval algorithm based on fully polarimetric SAR image data
Weizeng Shao, Yuyi Hu, Xingwei Jiang, Youguang Zhang   +3 more
doaj   +1 more source

Large-scale Land Cover Classification in GaoFen-2 Satellite Imagery

, 2018
Many significant applications need land cover information of remote sensing images that are acquired from different areas and times, such as change detection and disaster monitoring.
Lu, Qikai, Tong, Xin-Yi, Xia, Gui-Song, Zhang, Liangpei   +3 more
core   +1 more source

Artificial Neural Networks and Evolutionary Computation in Remote Sensing [PDF]

, 2021
Artificial neural networks (ANNs) and evolutionary computation methods have been successfully applied in remote sensing applications since they offer unique advantages for the analysis of remotely-sensed images.

core   +1 more source

Integration of GF2 Optical, GF3 SAR, and UAV Data for Estimating Aboveground Biomass of China’s Largest Artificially Planted Mangroves

Remote Sensing, 2020
Accurate methods to estimate the aboveground biomass (AGB) of mangroves are required to monitor the subtle changes over time and assess their carbon sequestration. The AGB of forests is a function of canopy-related information (canopy density, vegetation
Yuanhui Zhu, Kai Liu, Soe W. Myint, Zhenyu Du, Yubin Li, Jingjing Cao, Lin Liu, Zhifeng Wu   +7 more
doaj   +1 more source

Semi-Empirical Algorithm for Wind Speed Retrieval from Gaofen-3 Quad-Polarization Strip Mode SAR Data [PDF]

, 2020
Synthetic aperture radar (SAR) is a suitable tool to obtain reliable wind retrievals with high spatial resolution. The geophysical model function (GMF), which is widely employed for wind speed retrieval from SAR data, describes the relationship between ...
Marino, Armando, Shao, Weizeng, Sun, Jian, Yuan, Xinzhe, Zhu, Shuai   +4 more
core   +1 more source

Improvement of Gaofen-3 Absolute Positioning Accuracy Based on Cross-Calibration

Sensors, 2017
The Chinese Gaofen-3 (GF-3) mission was launched in August 2016, equipped with a full polarimetric synthetic aperture radar (SAR) sensor in the C-band, with a resolution of up to 1 m.
Mingjun Deng, Guo Zhang, Ruishan Zhao, Shaoning Li, Jiansong Li   +4 more
doaj   +1 more source

Geometric Evaluation of Gaofen-7 Stereo Data [PDF]

, 2023
China's first sub-metre stereo satellite, GaoFen-7, was launched on 7 November 2019. One of the main criteria for a stereo mapping satellite is the geometric accuracy of the images.
d'Angelo, Pablo, Tian, Jiaojiao
core  

GIS and SWMM‐Integrated Multi‐Indicator Fuzzy Assessment for Urban Flood Risk in Chengdu

Journal of Flood Risk Management, Volume 19, Issue 1, March 2026.
ABSTRACT Effective assessment of urban flood risk is essential for decision‐making under mixed and uncertain information conditions. This study proposes a multi‐indicator hesitant fuzzy assessment framework integrating hazard, exposure, and vulnerability.
Mingxia Lu, Ting Ni, Jiuping Xu
wiley   +1 more source