The characteristics of space targets are the basis of detecting and identifying space targets. The size, shape and material of the space target are closely related to its scattering characteristics. Starting with the three typical influencing factors of dimensional accuracy, shape and material, this paper designed a typical simple body and assembly model with 15% dimensional accuracy, different shapes and different materials, and analyzed the influence of dimensional accuracy, shape and material on scattering characteristics according to the calculation results of the model's omnidirectional luminosity. The research results show that, when the size deviation is less than 15%, it has little effect on the scattering characteristics of the target. When the size is equivalent, the influence of different shapes on the scattering characteristics of the target is not significant, and the surface material has the greatest influence on the scattering characteristics of the target.
Aiming at the serious non-uniformity of infrared hyperspectral data, a non-uniformity correction method based on spectral channel is proposed.This method not only corrects the non-uniformity of each spectral channel image, but also corrects the non-uniformity between spectral channels. By comparing the traditional two-point correction method with the proposed method in this paper, it shows that the method proposed in this paper can not only effectively remove the non-uniformity of each spectral image, but also retain the original spectral curve characteristics of the target, which verifies the effectiveness of the proposed method in this paper.
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