Søgeresultater - Qijin Han

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  1. 1
    Bayesian Denoising Algorithm for Low SNR Photon-Counting Lidar Data via Probabilistic Parameter Optimization Based on Signal and Noise Distribution

    Bayesian Denoising Algorithm for Low SNR Photon-Counting Lidar Data via Probabilistic Parameter Optimization Based on Signal and Noise Distribution af Qi Liu, Jian Yang, Yue Ma, Wenbo Yu, Qijin Han, Zhibiao Zhou, Song Li

    Udgivet 2025-06-01

    The Ice, Cloud, and land Elevation Satellite-2 has provided unprecedented global surface elevation measurements through photon-counting Lidar (Light detection and ranging), yet its low signal-to-noise ratio (SNR) poses significant challenges for denoising algorithms. Existing methods, relying on fix...

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    A Terrain-Constrained Cross-Correlation Matching Method for Laser Footprint Geolocation

    A Terrain-Constrained Cross-Correlation Matching Method for Laser Footprint Geolocation af Sihan Zhou, Pufan Zhao, Jian Yang, Qijin Han, Yue Ma, Hui Zhou, Song Li

    Udgivet 2025-07-01

    The full-waveform spaceborne laser altimeter improves footprint geolocation accuracy through waveform matching, providing critical data for on-orbit calibration. However, in areas with significant topographic variations or complex surface characteristics, traditional waveform matching methods based...

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