Results 11 to 20 of about 133,514 (345)

Extracting accurate terrain in vegetated areas from ICESat-2 data

International Journal of Applied Earth Observations and Geoinformation, 2023
The uncertainty of ICESat-2 terrain accuracy, especially in vegetated areas, limits its scientific application, and there is barely any comprehensive modeling evaluation for this uncertainty.
Binbin Li, Huan Xie, Xiaohua Tong, Shijie Liu, Qi Xu, Yuan Sun   +5 more
doaj   +1 more source

A Combined Deconvolution and Gaussian Decomposition Approach for Overlapped Peak Position Extraction From Large-Footprint Satellite Laser Altimeter Waveforms

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
In satellite laser altimetry, it is a challenging task to accurately extract peak positions from full waveforms due to the overlapped or weak peaks within the large laser footprints, which substantially affects the subsequent applications.
Zhijie Zhang, Huan Xie, Xiaohua Tong, Hanwei Zhang, Hong Tang, Binbin Li, Di Wu, Xiaolong Hao, Shijie Liu, Xiong Xu, Sicong Liu, Peng Chen, Yongjiu Feng, Chao Wang, Yanmin Jin   +14 more
doaj   +1 more source

Reducing spatial autocorrelation in the dynamic simulation of urban growth using eigenvector spatial filtering

International Journal of Applied Earth Observations and Geoinformation, 2021
In cellular automata (CA) based modeling of dynamic urban growth, non-spatial statistical approaches are usually affected by spatial autocorrelation and fail to describe the spatially non-stationary relationships between urban growth and its drivers. The
Xinlei Yan, Yongjiu Feng, Xiaohua Tong, Pengshuo Li, Yilun Zhou, Peiqi Wu, Huan Xie, Yanming Jin, Peng Chen, Shijie Liu, Xiong Xv, Sicong Liu, Chao Wang   +12 more
doaj   +1 more source

Cloud Atlas: High-Contrast Time-Resolved Observations of Planetary-Mass Companions [PDF]

, 2019
Directly-imaged planetary-mass companions offer unique opportunities in atmospheric studies of exoplanets. They share characteristics of both brown dwarfs and transiting exoplanets, therefore, are critical for connecting atmospheric characterizations for
Apai, Dániel, Bedin, Luigi R., Burgasser, Adam J., Cowan, Nicolas B., karalidi, Theodora, Lew, Ben W. P., Lowrance, Patrick J., Manjavacas, Elena, Marley, Mark S., Metchev, Stanimir, Miels-Páez, Paulo A., Radigan, Jacqueline, Schneider, Glenn, Zhou, Yifan   +13 more
core   +4 more sources

Criss-cross mapping BD+30 3639: a new kinematic analysis technique [PDF]

, 2010
We present a new analysis of kinematic data of the young planetary nebula BD+30 3639. The data include spectroscopic long-slit and internal proper motion measurements.
Bachiller, Bryce, Guerrero, Kastner, Li, Nico Koning, O'Dell, Shupe, Steffen, Steffen, Steffen, Steffen, Wolfgang Steffen   +12 more
core   +2 more sources

Refined Composite Multiscale Fluctuation Dispersion Entropy and Supervised Manifold Mapping for Planetary Gearbox Fault Diagnosis

Machines, 2023
A novel fault diagnosis scheme was developed to address the difficulty of feature extraction for planetary gearboxes using refined composite multiscale fluctuation dispersion entropy (RCMFDE) and supervised manifold mapping. The RCMFDE was first utilized
Haocheng Su, Zhenya Wang, Yuxiang Cai, Jiaxin Ding, Xinglong Wang, Ligang Yao   +5 more
doaj   +1 more source

A Semantic View on Planetary Mapping—Investigating Limitations and Knowledge Modeling through Contextualization and Composition

Remote Sensing, 2023
The concept of planetary mapping constitutes different activities within different contexts. Much like the field of cartography, it is an amalgamation of science, techniques, and artistic disciplines.
Stephan van Gasselt, Andrea Nass
doaj   +1 more source

A Comparison and Review of Surface Detection Methods Using MBL, MABEL, and ICESat-2 Photon-Counting Laser Altimetry Data

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
The Ice, Cloud, and Land Elevation Satellite-2 (ICESat-2) was launched on September 15, 2018. It is the first photon-counting laser altimeter satellite, which is of great significance for the research into laser altimetry.
Huan Xie, Qi Xu, Dan Ye, Jianghao Jia, Yuan Sun, Peiqi Huang, Ming Li, Shijie Liu, Feng Xie, Xiaolong Hao, Xiaohua Tong   +10 more
doaj   +1 more source

Automated Global Feature Analyzer - A Driver for Tier-Scalable Reconnaissance [PDF]

, 2008
For the purposes of space flight, reconnaissance field geologists have trained to become astronauts. However, the initial forays to Mars and other planetary bodies have been done by purely robotic craft.
Baker, Victor R., Datta, Ankur, Dohm, James M., Fink, Wolfgang, Furfaro, Roberto, Jobling, Farrah M., Kargel, Jeffrey S., Schulze-Makuch, Dirk, Tarbell, Mark A.   +8 more
core   +1 more source

Shape Reconstruction and Rotation Axis Estimation of Small Bodies Based on Structure-from-Motion [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Shape reconstruction and rotation axis estimation of small bodies essential for both engineering applications and scientific investigations. This paper presents a Structure-from-Motion-based (SFM) method for small body shape reconstruction and rotation ...
H. Xie, Y. Wang, X. Yan, M. Yang, Y. Wang, X. Tong   +5 more
doaj   +1 more source