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根据激光大气传输特性及衍射理论,提出一种对阵列探测器中相邻探测单元测量值之间进行插值的新方法——“高斯”插值法,并且对该方法获得的远场光强分布与“马赛克”及“线性”插值方法获得的光强分布进行了比较。结果表明:当焦平面处83.9%和63.2%环围能量半径上具有相同的探测单元时,“高斯”插值方法比其他两种方法复原的光强分布更为接近原始光斑的光强分布,其中“马赛克”方法复原的光强分布与原始的光强分布相比偏差较大。另外,从光斑大小考虑,“高斯”插值法也能够较好地复原出远场的空间光强分布。
According to the transmission characteristics of laser and the theory of diffraction, a new method called “Gaussian” interpolation method is proposed to interpolate the measured values of adjacent detection units in the array detector, and the far-field intensity The distribution is compared with that obtained by the “mosaic” and “linear” interpolation methods. The results show that the light intensity distribution of the Gaussian interpolation method is more similar to that of the other two methods when the same detection unit is located on the energy radius of 83.9% and 63.2% of the focal plane. , In which the light intensity distribution recovered by the “mosaic” method is greatly deviated from the original light intensity distribution. In addition, from the spot size, “Gaussian ” interpolation method can also better recover the far-field spatial light intensity distribution.