Author

Nijia Qian

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Review Open access Sep 2026

Generalized Matérn Process for GNSS Coordinate Series Noise Modeling

GNSS coordinate series noise modeling is essential for reliable geophysical signal estimation and uncertainty assessment. The generalized Gauss–Markov (GGM) noise model and the Matérn process (MP) noise model are widely used to describe low-frequency spectral flattening in GNSS coordinate series, but they differ in the...

Yue-Yang Huan, Guo-Bin Chang, Lei Peng et al. · Remote Sensing · 0 citations

Review Open access Aug 2026

Dual-Module Bench-Line Extraction and Surface-Object Segmentation from UAV LiDAR Point Clouds in Open-Pit Mines Using Neighborhood Geometric Analysis and an Enhanced PointNet++ Network

Open-pit mines contain rapidly changing terrain, discontinuous bench structures, and mixed artificial–natural objects, which complicate automated three-dimensional mapping. This study presents a dual-module workflow for UAV LiDAR point clouds. Module A characterizes local geometry using normal and curvature descriptors...

Shanfeng Ge, Ni-Jia Qian, Jing-Xiang Gao et al. · Applied Sciences · 0 citations