Overview of the GF‐7 laser altimeter system mission

X Tang, J Xie, R Liu, G Huang, C Zhao… - Earth and Space …, 2020 - Wiley Online Library
Abstract The Gao Fen 7 (GF‐7) satellite is China's first submeter, high‐resolution Earth
observation and remote sensing satellite for natural resource monitoring, land surveying …

Design and data processing of China's first spaceborne laser altimeter system for earth observation: GaoFen-7

J Xie, G Huang, R Liu, C Zhao, J Dai… - IEEE Journal of …, 2020 - ieeexplore.ieee.org
The GaoFen-7 (GF-7) satellite, which was launched on November 3, 2019, is China's first
civilian submeter stereo mapping satellite. The satellite is equipped with the first laser …

A new terrain matching method for estimating laser pointing and ranging systematic biases for spaceborne photon-counting laser altimeters

P Zhao, S Li, Y Ma, X Liu, J Yang, D Yu - ISPRS Journal of Photogrammetry …, 2022 - Elsevier
Precisely estimating on-orbit laser ranging and pointing systematic bias plays a significant
role in obtaining high accuracy data product for spaceborne laser altimeters. Current terrain …

Integrating stereo images and laser altimetry points derived from the same satellite for high-accuracy stereo mapping

X Tang, P Zhou, L Guo, H Pan - Remote Sensing, 2023 - mdpi.com
At present, some mapping satellites, such as GaoFen-7 and ZiYuan3-03, are equipped with
both optical stereo cameras and laser altimeters that can synchronously obtain stereo …

The in-orbit calibration method based on terrain matching with pyramid-search for the spaceborne laser altimeter

X Tang, J Xie, X Gao, F Mo, W Feng… - IEEE Journal of Selected …, 2019 - ieeexplore.ieee.org
The pointing bias of the laser altimeter would change because of the launch vibration,
variations in the space environment or other factors, which is one of the most important …

Integrating stereo images and laser altimeter data of the ZY3-02 satellite for improved earth topographic modeling

G Zhang, K Xu, P Jia, X Hao, D Li - Remote Sensing, 2019 - mdpi.com
The positioning accuracy is critical for satellite-based topographic modeling in cases of
exterior orientation parameters with high uncertainty and scarce ground control data. The …

A separate calibration method of laser pointing and ranging for the GF-7 satellite laser that does not require field detectors

R Liu, J Xie, C Xu, J Zeng, F Mo, X Yang - Remote Sensing, 2022 - mdpi.com
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 …

Centroid Extraction of Laser Spots Captured by Infrared Detectors Combining Laser Footprint Images and Detector Observation Data

X Yang, J Xie, R Liu, F Mo, J Zeng - Remote Sensing, 2023 - mdpi.com
On-orbit geometric calibration of satellite-borne laser based on infrared detectors is the key
tool to ensure the elevation measurement accuracy, and the accuracy of on-orbit geometric …

Laser spot center location method for Chinese spaceborne GF-7 footprint camera

C Ren, J Xie, X Zhi, Y Yang, S Yang - Sensors, 2020 - mdpi.com
The Gaofen-7 (GF-7) satellite is equipped with two area array sensor footprint cameras to
capture the laser altimeter spot. In order to establish a direct correspondence between the …

A geometric calibration method without a field site of the GF-7 satellite laser relying on a surface mathematical model

J Xie, R Liu, X Tang, X Yang, J Zeng… - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
The GaoFen-7 (GF-7) satellite, which is used for Earth observations, is equipped with
China's first civil full-waveform laser altimeter. The geometric calibration of the GF-7 satellite …