Results 101 to 110 of about 40,312,078 (138)

A virtual coastal band-driven optimization-based bathymetric approach (VOBA) for optically shallow water with multispectral imagery

GIScience & Remote Sensing
Bathymetry mapping is important for detecting underwater topography. For optically shallow waters, the use of satellite-based high-spatial-resolution imagery (Such as Gaofen-2, Ziyuan-3, Worldview-2) and historical medium-spatial-resolution imagery ...
Yongming Liu, Shilin Tang, Bin Cao, Zhantang Xu, Xulong Liu, Kai Zeng, Yuye Huang, Wendi Zheng   +7 more
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FVC variation based on Landsat and GaoFen satellites.

FVC variation based on Landsat and GaoFen satellites.
Ziheng Song (14380161), Liping Sun (530970), Gang Liu (81776), Jie Fang (306330), Chuangang Gong (17789918), Fei Wang (19534), Jian Zhang (1682)   +6 more
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Automatic Ship Detection Based on RetinaNet Using Multi-Resolution Gaofen-3 Imagery

Remote Sensing, 2019
Independent of daylight and weather conditions, synthetic aperture radar (SAR) imagery is widely applied to detect ships in marine surveillance. The shapes of ships are multi-scale in SAR imagery due to multi-resolution imaging modes and their various ...
Yuanyuan Wang, Hong Zhang, Chao Wang
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Preliminary Coherence Assessment of Gaofen-3 SAR Data

IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium, 2018
Gaofen-3 (GF-3) is the only in-orbit civilian SAR satellite of China. The satellite is specially designed for ocean observation. The coherence is not exclusively considered during satellite designing phase. In this paper, we conduct the preliminary coherence assessment of GF-3 SAR data. Decoherence sources of GF-3 consists of seven components. Baseline
Tao Li 0004, Xinming Tang, Qianfu Chen, Xiaoming Gao, Xiang Zhang 0021, Li Guo   +5 more
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ScanSAR Radiometric Correction and Analysis of GaoFen-3

2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR), 2019
GaoFen-3(GF-3) is China's first multi-mode c-band radar imaging satellite launched on August 10, 2016. In order to meet the requirements for global ocean observing and wave detection, three wide swath modes were designed using Scan-beam synthetic aperture radar (ScanSAR) imaging mode, which are narrow scan, wide scan and global observation.
Lihua Zhong, Xiaolan Qiu, Bing Han, Yuxin Hu, Aiping Chen, Chibiao Ding   +5 more
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Polarimetric Channel Misregistration Evaluation for the GaoFen-3 QPSI Mode

IEEE Geoscience and Remote Sensing Letters, 2019
This letter presents two main contributions to the data quality assessment of China’s new GaoFen-3 radar satellite. First, we observed a half-pixel misregistration between the horizontal (H) and vertical (V) transmitting channels in the azimuth direction.
Lei Shi 0005, Pingxiang Li, Jie Yang 0040, Liangpei Zhang 0001, Xiaoli Ding 0001, Lingli Zhao   +5 more
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A Spaceborne SAR Calibration Simulator Based on Gaofen-3 Data

IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium, 2019
Synthetic Aperture Radar (SAR) is widely used in remote sensing field, especially for the acquisition of quantitative information about the earth’s environment. Calibration processing is critical for SAR image quantitative applications. This paper proposes a spaceborne SAR calibration simulator to describe the calibration process.
Rui Zhang 0100, Jianjun Huang 0006, Wei Yang 0004, Jie Chen 0009, Yamin Wang   +4 more
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Land Cover Semantic Segmentation of High-Resolution Gaofen-3 SAR Image

2021 IEEE International Geoscience and Remote Sensing Symposium IGARSS, 2021
Land cover classification with SAR images mainly focuses on the utilization of fully polarimetric SAR (PolSAR) images. This paper explores the potential of semantic segmentation of high-resolution single polarimetric (single-pol) SAR and PolSAR images, in particular tailored for the Gaofen-3 (GF-3) sensor. First of all, a unified SAR data preprocessing
Xianzheng Shi, Feng Xu 0001
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Mountainous Landslide Recognition Based on Gaofen-3 Polarimetric SAR Imagery

IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium, 2019
Full-polarimetric SAR image is very useful for the landslide monitoring especially in the well vegetation-covered mountainous region. GaoFen-3 (GF-3) is the first civil C-band fully polarimetric SAR satellite in China. In order to test the ability of GF-3 full-polarimetric SAR data on landslide monitoring, 2 cases of mountainous landslide in ...
Yi Ding, Ming Liu, Suju Li, Dan Jia, Lei Zhou, Bin Wu, Yani Wang   +6 more
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Preliminary Analgsis of Geometric Positioning Accuracy Based on Gaofen-3 Data

IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium, 2019
The GaoFen-3(GF-3) satellite is the first full-polarized synthetic aperture radar (SAR) imaging satellite of china, which was launched in August 2016. This paper obtained the geographic information based on the actual data from GF-3 satellite. Range-Doppler Model is used to process GF-3 data to verify the different between the position accuracy after ...
Mengfei Yu, Fei Li 0029, Yunkai Deng, Heng Zhang 0007, Weidong Yu, Robert Wang 0001   +5 more
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