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Luxin Yan

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Proceedings Article | 30 October 2009 Paper

A framework of passive millimeter-wave imaging simulation for typical ground scenes

Luxin Yan, Sheng Zhong

Proceedings Volume 7494, 749409 (2009) https://doi.org/10.1117/12.833717

KEYWORDS: Passive millimeter wave sensors, Sensors, Scene simulation, Radiometry, Passive millimeter wave imaging, Atmospheric propagation, 3D modeling, Optical sensors, Visible radiation, Infrared imaging

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Passive millimeter-wave (PMMW) imaging offers advantages over visible and IR imaging in having better all weather performance. However the PMMW imaging sensors are state-of-the-art to date, sometimes it is required to predict and evaluate the performance of a PMMW sensor under a variety of weather, terrain and sensor operational conditions. The PMMW scene simulation is an efficient way. This paper proposes a framework of the PMMW simulation for ground scenes. Commercial scene modeling software, Multigen and Vega, are used to generate the multi-viewpoint and multi-scale description for natural ground scenes with visible images. The background and objects in the scene are classified based on perceptive color clusters and mapped with different materials. Further, the radiometric temperature images of the scene are calculated according to millimeter wave phenomenology: atmospheric propagation and emission including sky temperature, weather conditions, and physical temperature. Finally, the simulated output PMMW images are generated by applying the sensor characteristics such as the aperture size, data sample scheme and system noise. Tentative results show the simulation framework can provide reasonable scene's PMMW image with high fidelity.

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