Based on one-dimensional photonic crystals (1D PCs), we studied an innovative multispectral compatible stealth material for visible light, infrared, and 1.06-μm laser. The fabricated PCs had advantages of different colors, low emissivity in the atmospheric windows, and low reflectance at 1.06-μm waveband. According to some relevant experiments, the prepared films possessed colors of yellow, green, and blue, which could be used to simulate the color of the desert, woodland, and ocean, respectively. The infrared stealth performance of films showed that the thermal radiation in the atmospheric windows of 3 to 5 μm and 8 to 14 μm could be reduced effectively. In addition, the films’ reflectance spectra measured by spectrometer indicate that the reflectance at 1.06 μm is below 20%, which, in practice, could enormously reduce the echo power of incident lasers.
KEYWORDS: Solar cells, Infrared radiation, Solar radiation, Solar radiation models, Sun, Solar energy, Temperature metrology, Atmospheric modeling, Thermal modeling
The infrared characteristics of the target is very important for target recognition. The infrared radiation characteristics are different between damaged solar panel and normal working solar panel. It is the characteristic position for the solar panels’ nondestructive fault testing. In this paper, the temperature model of solar panels is established, and the numerical calculation is carried out. The calculated results and the measured data matching well verify the correctness of the calculation model. The results also show that the temperature of solar panels which are damaged are higher than the temperature of those who are normal working. On the basis of the temperature calculation, the infrared radiation characteristics of solar panels are calculated .The result shows also that the infrared radiation intensity of those damaged solar panels are higher than the normal working solar panels. This provides the theoretical support for the infrared nondestructive testing of solar panels.
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