Dr. Jianhua Li Profile

Dr. Jianhua Li

Ph.D Student at Natl Key Lab of Science and Techn Space Microwave

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Publications (15)

Proceedings Article | 20 November 2024 Presentation + Paper

Modeling of atmospheric radiative transfer with polarization effects using scattering phase matrix

Mengfan Zou, Jianhua Li, Xiaojian Xu, Xiaoyu He

Proceedings Volume 13193, 131930J (2024) https://doi.org/10.1117/12.3030986

KEYWORDS: Atmospheric particles, Polarization, Aerosols, Scattering, Atmospheric modeling, Radiative transfer, Matrices, Mie scattering, Rayleigh scattering, Transmittance

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Solar radiation will be scattered by atmospheric molecules and aerosol particles when it transfers through the Earth atmosphere. The scattered radiance with different polarization state can be used to characterize atmospheric components. Based on the BHU-ATM presented in our previous work, an atmospheric radiative transfer model considering the polarization effects is developed in this paper, in which the parameter discretization method is used. To this end, the radiative transfer equation is adapted into the Stokes vector form, while the impacts of atmospheric molecules and aerosols on the polarization state of the scattered radiance are represented by means of the scattering phase matrix. The Curtis-Godson approximation and the two-stream approximation are used to obtain the analytical solution of the adapted radiative transfer equation. As the precise calculation of the scattering phase matrix varying with the scattering angle and the radiant wavelength is inefficient for the calculation of spectral path radiance, a novel aspect of this work is the efficient computation of the scattering phase matrix through a two-dimensional interpolation method, significantly reducing computational complexity while maintaining accuracy across a broad range of angles and wavelengths. The simulation results of the atmospheric transmittance, the spectral radiance and the degree of polarization (DOP) for an arbitrarily selected transfer path are given. As it can be seen, in the spectrum from the visible through the near infrared (VNIR), the polarization modeling showed a maximum transmittance difference of 0.0007 and a spectral radiance difference of 0.3W/m²/μm/sr. The DOP varied significantly, with a difference of up to 0.12 between urban and ocean aerosols. The developed polarization model can improve aerosol component identification in satellite-based remote sensing applications, aiding in more accurate air quality monitoring and enhancing climate models that account for aerosol scattering effects.

Proceedings Article | 23 January 2023 Paper

Centroid and grayscale reconstruction algorithm for infrared point targets

Jianhua Li, Feng Xue, Han Zhang, Lu Gao, Jiaqi Liu

Proceedings Volume 12557, 1255727 (2023) https://doi.org/10.1117/12.2651982

KEYWORDS: Target detection, Sensors, Reconstruction algorithms, Infrared radiation, Infrared detectors, Signal detection, Point spread functions

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Proceedings Article | 23 January 2023 Paper

Space target optic radiation flux simulation

Zhang Han, Li Jianhua

Proceedings Volume 12557, 125572A (2023) https://doi.org/10.1117/12.2652028

KEYWORDS: Solar radiation, Solar radiation models, Heat flux, Sun, Spherical lenses, Reflection, Radiation effects, Data modeling, Optical simulations, Black bodies

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Proceedings Article | 24 November 2021 Paper

Estimation method of infrared detection range for reentry target based on signal-to-clutter ratio

Zihui Zhu, Wenlin Cai, Jianhua Li, Xia Ai, Lu Gao, Jiaqi Liu

Proceedings Volume 12061, 120610D (2021) https://doi.org/10.1117/12.2602874

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Proceedings Article | 24 November 2021 Paper

The method for predicting laser interference image in infrared detection system

Qian Zhao, Ming-hao Wang, Jian-hua Li, Chen-xin Sun, Yi-zhong Fang

Proceedings Volume 12061, 120611S (2021) https://doi.org/10.1117/12.2607063

KEYWORDS: Sensors, Infrared detectors, Optical simulations, Black bodies, Infrared sensors, Infrared detection, Thermal modeling, Diffraction, Gaussian beams, Image sensors

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Proceedings Article | 5 November 2020 Paper

Effect of solar stray light on imaging quality of infrared detection system

Jianhua Li, Qian Zhao, Lian Xue, Zhenghong Liu, Lu Gao, Jiaqi Liu

Proceedings Volume 11563, 115630A (2020) https://doi.org/10.1117/12.2579541

KEYWORDS: Stray light, Sensors, Imaging systems, Infrared detection, Infrared radiation, Photons, Black bodies, Transmittance, Stray light analysis

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Proceedings Article | 31 January 2020 Paper

Image analysis for the fault diagnosis in a rocket engine failure

Jianhua Li, Xin Liu, Hongjie Li, Ziwen Yu, Zhifeng Li, Jiaqi Liu

Proceedings Volume 11427, 1142709 (2020) https://doi.org/10.1117/12.2548972

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Proceedings Article | 24 October 2017 Paper

Algorithm based on wavelet transform applied in the Space Infrared Image

Qian Zhao, Zhenhong Niu, Xin Liu, Wenlin Cai, Zhifeng Li, Jianhua Li, Feng Xue

Proceedings Volume 10462, 104624A (2017) https://doi.org/10.1117/12.2285506

KEYWORDS: Infrared imaging, Nonuniformity corrections

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Proceedings Article | 24 October 2017 Paper

Method for reducing the degradation effects of EMI wire grid on the optic performance

Zhifeng Li, Zhenhong Niu, Jianhua Li, Qian Zhao, Xin Liu, Jiaqi Liu

Proceedings Volume 10462, 1046216 (2017) https://doi.org/10.1117/12.2283274

KEYWORDS: Electromagnetic coupling, Image restoration

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Proceedings Article | 24 October 2017 Paper

Design of cryogenic area blackbody in vacuum chamber

Lian Xue, Hua Nan, Jianhua Li, Xiaoli Fan, Xin Zou

Proceedings Volume 10462, 104623Y (2017) https://doi.org/10.1117/12.2285327

KEYWORDS: Black bodies, Cryogenics, Infrared radiation, Calibration

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Proceedings Article | 24 October 2017 Paper

Miniaturized star tracker for micro spacecraft with high angular rate

Jianhua Li, Zhifeng Li, Zhenhong Niu, Jiaqi Liu

Proceedings Volume 10463, 1046311 (2017) https://doi.org/10.1117/12.2283271

KEYWORDS: Space operations

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Proceedings Article | 25 September 2013 Paper

Crosstalk analysis of multilayer collinear volume holographic data storage

Jinqiu Liu, Liangcai Cao, Chengmingyue Li, Jianhua Li, Qingsheng He, Guofan Jin

Proceedings Volume 8847, 88470D (2013) https://doi.org/10.1117/12.2026508

KEYWORDS: Holography, Data storage, Signal to noise ratio, 3D image reconstruction, Multiplexing, Spatial light modulators, Modulation, Holograms, Volume holography, Sensors

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Proceedings Article | 15 October 2012 Paper

Image reconstruction model for the collinear holographic data storage system

Jianhua Li, Liangcai Cao, Qingsheng He, Guofan Jin

Proceedings Volume 8420, 84200E (2012) https://doi.org/10.1117/12.977340

KEYWORDS: 3D image reconstruction, Image restoration, Data modeling, Image quality, Holographic data storage systems, Optics manufacturing, Holography, Optical testing, Current controlled current source, Data storage

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Proceedings Article | 15 October 2012 Paper

Collinear holographic data storage system in LiNbO3 crystal

Jianhua Li, Liangcai Cao, Qingsheng He, Guofan Jin

Proceedings Volume 8497, 849708 (2012) https://doi.org/10.1117/12.929232

KEYWORDS: Crystals, Spatial light modulators, Holography, Signal processing, Holograms, Polarization, Laser crystals, Diffraction, Digital micromirror devices, Dielectrics

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Proceedings Article | 2 December 2010 Paper

Wavelength and defocus margins of the collinear holographic storage system

Jianhua Li, Liangcai Cao, Huarong Gu, Xiaodi Tan, Qingsheng He, Guofan Jin

Proceedings Volume 7851, 785115 (2010) https://doi.org/10.1117/12.870349

KEYWORDS: Holography, Diffraction, Sensors, Point spread functions, Holograms, Spatial light modulators, Optical simulations, Data storage, Modulation, Holographic data storage systems

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Showing 5 of 15 publications

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