Xiaopeng Li

State-Space Kalman Smoothing of Airborne Gravity Data with Colored Noise

Xiaopeng Li

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Exploiting Full Flight Trajectories in Airborne Gravimetry: From Simulation to Real-World Validation

Xiaopeng Li

Airborne gravimetry plays a critical role in local gravity field determination but remains costly and operationally constrained. In current practice, gravity data collected during takeoff, landing, and turning (collectively referred to as preparing time) are routinely discarded due to sensor degradation under …

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High Frame Rate ViSAR Based on OAM Beams: Imaging Model and Imaging Algorithm

Xiaopeng Li, Liying Xu, Yongfei Mao, Weisong Li et autres

High frame rate imaging of synthetic aperture radar (SAR), also known as video SAR (ViSAR), has attracted extensive research in recent years. When ViSAR system parameters are fixed, there is a technical trade-off between high frame rates and high resolution. In traditional …

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ATAD3A deficiency induces oxidative eustress via the complex I reverse electron transport

Jiao Meng, Xiaopeng Li, Minyi Hu, Shilong Li et autres

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A lightweight rockfall detection method in complex environments based on receptive field and attention mechanism: REGM-YOLO

Hui Chen, Lu Zhang, Shuaixing Yan, Xiaopeng Li et autres

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Stepwise Guided Policy Optimization: Coloring your Incorrect Reasoning in GRPO

Peter Qi Chen, Xiaopeng Li, Ziniu Li, Xi Chen et autres

Reinforcement learning (RL) has proven effective in strengthening the reasoning capabilities of large language models (LLMs). A widely adopted method, Group Relative Policy Optimization (GRPO), has shown strong empirical results in training recent reasoning models, but it fails to update the policy …

Development, Calibration, and validation of a Novel nonlinear Car-Following Model: Multivariate piecewise linear approach for adaptive cruise control vehicles

Ke Ma, Haotian Shi, Chenyuan Ma, Zhitong Huang et autres

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Quantile-based scenario generation for automated vehicle safety evaluation

Hang Zhou, Chengyuan Ma, Ke Ma, Xiaopeng Li

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A Novel Deep Unfolding Network for Multi-Band SAR Sparse Imaging and Autofocusing

Xiaopeng Li, Mengyang Zhan, Yiheng Liang, Yinwei Li et autres

The sparse imaging network of synthetic aperture radar (SAR) is usually designed end to end and has a limited adaptability to radar systems of different bands. Meanwhile, the implementation of the sparse imaging algorithm depends on the sparsity of the target scene …

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Research on the temporal and spatial variation characteristics of drought in the Hexi Corridor region based on TVDI

Xiaopeng Li, Kang Li

This study is based on Landsat 8 data from 2013 to 2023. By fitting Land Surface Temperature (LST) and Normalized Difference Vegetation Index (NDVI) data, we constructed the NDVI-LST feature space to obtain Temperature-Vegetation Drought Index (TVDI) data for the Hexi Corridor …

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Unlocked Potentials in Airborne Gravimetry

Xiaopeng Li

Recent advancements in geodesy have highlighted the dynamic interplay between theory, science, engineering, technology, and practice-oriented services. The continuous evolution of geodetic science has led to significant progress in both traditional geodetic challenges and emerging issues, often driven by innovations in instrumentation …

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Ce Single Atom with Cascaded Self‐Circulating Enzyme‐Like Activities and Photothermal Activities for Cancer Therapy

Jialiang Guo, Mengdie Jin, Yongkang Huang, Leilei Yin et autres

Abstract Specific regulation of the tumor microenvironment (TME) is a potential strategy for tumor therapy. Although many TME‐responsive nanozymes have been developed for tumor therapy, the limited substrates affect the therapeutic effect. In this study, cerium single‐atom nanozymes (Ce SAs) are prepared …

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