Ms. Hua Zhang Profile

Hua Zhang

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Publications (3)

Proceedings Article | 18 March 2024 Paper

Target anti-jamming acquisition method based on machine vision classification technology

Qiuping Hu, Yuanyuan Zhou, Yu Wang, Hua Zhang, Zili Tang

Proceedings Volume 13104, 131044H (2024) https://doi.org/10.1117/12.3023584

KEYWORDS: Target detection, Tunable filters, Target recognition, Image segmentation, Digital filtering, Image filtering, Linear filtering, Object detection, Decision trees, Target acquisition

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Proceedings Article | 10 May 2023 Paper

Consistency analysis method of optical multispectral imaging based on wake simulation

Qiuping Hu, Yu Wang, Hua Zhang, Bin Li, Biao Liu, Yuanyuan Zhou

Proceedings Volume 12554, 1255416 (2023) https://doi.org/10.1117/12.2652156

KEYWORDS: Rockets, Visible radiation, Image segmentation, Combustion, Multispectral imaging, Imaging systems, Computer simulations, Long wavelength infrared, Numerical simulations, Medium wave

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In the field of conventional weapon test and identification, optical measurement is often used to measure the exterior ballistic parameters of targets. With the variety of measuring equipment and measuring bands such as visible light/medium-wave/long-wave, the profile/shape and radiation/luminance distribution of the exhaust plume target imaging in the optical measurement system are great different, so that the target interpretation position changes greatly with the change of the exhaust plume .The variation of the plume depends on the flight state of the weapon system, inmost cases there is no prior data support, we judge by the experience of the surveyors, so this processing mode affects the credibility of the measurement data, especially in the case of high precision requirements such as characteristic parameter and miss distance processing. Aiming at the Consistency problem of multispectral imaging data of the exhaust plume target, using the inversion imaging method of fluid numerical simulation to characterize the multispectral imaging of the weapon system under various flight states, and theoretically evaluate the imaging deviation. Whether this method is feasible depends on accuracy of the wake simulation calculation meets the actual needs. For this reason, the wake combustion products and their components of a certain type of rocket are studied. Based on the plume component analysis, establish a plume directional radiation calculation model. Through the close acquisition of the visible light/ medium-wave/long-wave images in the initial stage of the rocket, the profile characteristic parameters are compared with the simulated radiation images obtained by numerical simulation. The results show that ,the main body of the exhaust plume edge error is located within ± 20%, and the comparison result in the core area of the exhaust plume is better than ±10%,so the profile data of the core area can be used as the reference for consistency analysis. This method breaks through the current situation of systematic error estimation based on experience in theory, and has high guiding significance for the evaluation of the processing accuracy of external ballistic test data.

Proceedings Article | 12 December 2018 Paper

Exhaust plume warning method based on modeling of infrared characteristics and motion features

Bin Li, Qiuping Hu, Gang Liu, Xin Wang, Hua Zhang

Proceedings Volume 10846, 1084633 (2018) https://doi.org/10.1117/12.2505651

KEYWORDS: Infrared radiation, Infrared imaging, Target detection, Infrared detectors, Missiles, Imaging systems, Image processing, Thermal modeling, Motion analysis, Target recognition

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