Modeling And Simulation For Polarized Hyperspectral Imaging Process

The Polarized Hyperspectral remote sensing combines Hyperspectral remote sensing and polarization. And Hyperspectral has the abundant spectral and spatial information, so these make Hyperspectral win favors on some domains, such as remote sensing and medicine etc. And polarization has a significant advantage on the low reflectivity's target and the vegetation coverage, so it also obtains the widespread attention. In this paper, we set up the Polarized Hyperspectral simulation model and analyze leading factors that affect the polarization of target. Therefore, it points out the orientation of application for Polarized Hyperspectral remote sensing and makes an interpretation of spaceborne POLDER sensor data features.To make the research successful, the typical targets's spectrμm, and polarization's origin, and the imaging model's characteristics are investigated. Moreover, we illustrating the role of bidirectional reflectance which greatly influences the spectrμm and polarization.The Polairzed hyperspectral simulation lies on reflectivity model, which includes traditional spectral reflectivity model and polarized reflectivity model. Spectral reflectivity model describes the change in the magnitude's intensity, but the polarized reflectivity model describes the change in the distribution of the magnitude. There are substantive outcomes about spectral reflectivity model, so polarized reflectivity model is mostly analyzed. Polarized reflectivity model contains the physical model and the semi-empirical model, and the former has the strong pertinency, and the latter has wide applicability. The physical models are used during the simulation. Meanwhile, the semi-empirical models are further analyzed too.We put forword to the model of Polarized Hyperspectral simulation based on the original Hyperspectral simulation. Whereas the polaized radiance which is from incident skylight reflected by the targer is of great difficulty. Because the incident skylight are from all directions and has unpolarized mul-scattering light and polarized Rayleith scattering light. In the paper, we realize the skylight model according to the theoretical analysis. The results show the polarized reflectance may be negative when the incident light is Rayleigh scattering light, which explains the spaceborne POLDER's data. Furtherover, the simulation results of soil and vegetation reflectance model are consistent with the POLDER's data.