Results 11 to 20 of about 75,657 (271)

Forest terrain and canopy height estimation using stereo images and spaceborne LiDAR data from GF-7 satellite

Geo-spatial Information Science, 2023
Accurate estimation of forest terrain and canopy height is crucial for timely understanding of forest growth. Gao Fen-7 (GF-7) Satellite is China’s first sub-meter-level three-dimensional (3D) mapping satellite for civilian use, which was equipped with a
Liming Du, Yong Pang, Wenjian Ni, Xiaojun Liang, Zengyuan Li, Juan Suarez, Wei Wei   +6 more
doaj   +3 more sources

A Separate Calibration Method of Laser Pointing and Ranging for the GF-7 Satellite Laser That Does Not Require Field Detectors

Remote Sensing, 2022
Satellite laser altimeters have been widely used in the surveying, mapping, forestry, and polar regions and by other industries due to their excellent elevation measurement accuracy.
Ren Liu, Junfeng Xie, Chaopeng Xu, Junze Zeng, Fan Mo, Xiaomeng Yang   +5 more
doaj   +3 more sources

Registration and Combined Adjustment for the Laser Altimetry Data and High-Resolution Optical Stereo Images of the GF-7 Satellite

Remote Sensing, 2022
The GF-7 satellite is China’s first civil sub-meter resolution stereo mapping satellite, aiming at 1:10,000-scale mapping. To achieve this goal, apart from the stereo optical cameras that reach sub-meter resolution, the GF-7 satellite is equipped with a ...
Jiyi Chen, Xinming Tang, Yucai Xue, Guoyuan Li, Xiaoqing Zhou, Liuru Hu, Shuaitai Zhang   +6 more
doaj   +3 more sources

Recognizing Urban Functional Zones by GF-7 Satellite Stereo Imagery and POI Data

Applied Sciences, 2023
The identification of urban functional zones (UFZs) is crucial for urban planning and optimizing industrial layout. Fusing remote sensing images and social perception data is an effective way to identify UFZs.
Zhenhui Sun, Peihang Li, Dongchuan Wang, Qingyan Meng, Yunxiao Sun, Weifeng Zhai   +5 more
doaj   +3 more sources

PRELIMINARY QUALITY ANALYSIS OF GF-7 SATELLITE LASER ALTIMETER FULL WAVEFORM DATA [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
The full-waveform data is the core data of GaoFen-7 (GF-7) satellite laser altimeter, and evaluation of waveform data quality is an important step and premise for satellite laser altimetry and quality control.
G. Li, G. Li, G. Li, J. Guo, J. Guo, X. Tang, X. Tang, F. Ye, Z. Zuo, Z. Zuo, Z. Liu, J. Chen, Y. Xue   +12 more
doaj   +4 more sources

Study on the Application of Water Resource Management Based on GF-7 Stereo Mapping Satellite [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
GF-7 satellite was successfully launched on 3 Nov 2019. The two-line stereo camera can effectively obtain 20 km-width panchromatic stereo images with resolution better than 0.8m and 3.2m-resolution multispectral images. Through the composite mapping mode
K. Liu, L. Liu, Z. Luo, Y. Gan
doaj   +4 more sources

Satellite Laser Altimetry Data-Supported High-Accuracy Mapping of GF-7 Stereo Images

Remote Sensing, 2022
GaoFen 7 (GF-7) is China’s first submeter high-resolution stereo mapping satellite with dual-linear-array cameras and a laser altimeter system onboard for high-precision mapping.
Changru Liu, Ximin Cui, Li Guo, Ling Wu, Xinming Tang, Shuhan Liu, Debao Yuan, Xia Wang   +7 more
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On-Orbit Performance of the GF-7 Satellite Laser Altimetry System from 2020 to 2024 [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
The Gaofen-7 (GF-7) satellite represents China's first civil satellite equipped with a full waveform laser altimeter. This study aims to evaluate its on-orbit performance by analyzing the transmitting and receiving systems through the examination of ...
J. Peng, G. Li, G. Li, J. Chen, A. Guo
doaj   +4 more sources

Cloud Detection and Centroid Extraction of Laser Footprint Image of GF-7 Satellite Laser Altimetry [PDF]

Journal of Geodesy and Geoinformation Science, 2021
The laser altimeter loaded on the GaoFen-7(GF-7) satellite is designed to record the full waveform data and footprint image, which can obtain high-precision elevation control points for stereo image.
Jiaqi YAO,Guoyuan LI,Jiyi CHEN,Genghua HUANG,Xiongdan YANG,Shuaitai ZHANG
doaj   +3 more sources

Research on key factors of satellite laser pointing calibration based on terrain matching: a case of GF-7 satellite

Geocarto International
The satellite laser geometry calibration method based on terrain matching (terrain matching calibration) has been extensively employed in satellite laser geometry calibration for its simplicity and lack of need for ground probes.
Chaopeng Xu, Junfeng Xie, Fan Mo, Ren Liu, Xiaomeng Yang   +4 more
doaj   +3 more sources