Coarse-to-Fine Image Matching-Based Footprint Camera Calibration of the GF-7 Satellite [PDF]
Sensors, 2021 The GF-7 satellite is China’s first high-resolution stereo mapping satellite that reaches sub-meter resolution, equipped with new-type payloads, such as an area array footprint camera that can achieve synchronization acquisition of laser spots.
Lirong Liu +5 more
doaj +7 more sources
On-Orbit Radiometric Performance of GF-7 Satellite Multispectral Imagery [PDF]
Remote Sensing, 2022 China’s first civilian, sub-meter, high-resolution stereo mapping satellite, GF-7, launched on 3 November 2019. Radiometric characterization of GF-7 multispectral imagery has been performed in this study. A relative radiometric accuracy evaluation of the
Hongzhao Tang +4 more
doaj +4 more sources
Accuracy Comparison and Assessment of DSM Derived from GFDM Satellite and GF-7 Satellite Imagery [PDF]
Remote Sensing, 2021 Digital Surface Model (DSM) derived from high resolution satellite imagery is important for various applications. GFDM is China’s first civil optical remote sensing satellite with multiple agile imaging modes and sub-meter resolution.
Xiaoyong Zhu +4 more
doaj +4 more sources
Influence of Atmospheric Scattering on the Accuracy of Laser Altimetry of the GF-7 Satellite and Corrections [PDF]
Remote Sensing, 2021 Satellite laser altimetry can obtain sub-meter or even centimeter-scale surface elevation data over large areas, but it is inevitably affected by scattering caused by clouds, aerosols, and other atmospheric particles.
Jiaqi Yao +7 more
doaj +4 more sources
On-Orbit Geometric Calibration and Accuracy Validation for Laser Footprint Cameras of GF-7 Satellite [PDF]
Remote Sensing, 2022 The Gaofen-7 (GF-7) satellite uses a two-beam laser altimetry system in which each beam is equipped with a laser footprint camera (LFC) to provide geometric processing of the laser footprint images that assist in optical image stereo mapping.
Jiyi Chen +6 more
doaj +3 more sources
DSM Quality Assessment of GF-7 Satellite [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information SciencesThe Gaofen-7 (GF-7) satellite was launched on November 3, 2019. It can achieve 1:10000 scale stereo mapping and serve the application needs of basic surveying and mapping, natural resources monitoring and geographic information resource construction ...
P. Tian +11 more
doaj +5 more sources
A Separate Calibration Method of Laser Pointing and Ranging for the GF-7 Satellite Laser That Does Not Require Field Detectors [PDF]
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 +5 more
doaj +3 more sources
Cloud detection of GF‐7 satellite laser footprint image [PDF]
IET Image Processing, 2021 In November 2019, the GaoFen‐7(GF‐7) satellite was equipped with China's first laser altimeter with full waveform recording capability, which obtains high‐precision long‐range three‐dimensional coordinates. The influence of clouds is noticeable for laser
Jiaqi Yao +6 more
doaj +2 more sources
KEY TECHNOLOGIES FOR 1:10,000 RAPID MAPPING BASED ON GF-7 SATELLITE [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023 In order to solve the problems of low efficiency, high cost and long cycle of the traditional 1:10000 basic geographic information data production method (aerial photography combined with field mapping), this paper proposes a 1:10000 rapid mapping method
J. W. Liu +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 +12 more
doaj +3 more sources