近海面光学与微波波段大气折射率结构常数比较分析

Comparison of refractive index structure parameter for optical and microwane band

大气湍流的变化影响红外和雷达波的传输,红外波段和微波波段在近海面受大气湍流的影响不同。折射率结构常数表征大气湍流强度,本文对近海面大气环境下的光波段和雷达波段传输的湍流强度做了理论计算和仿真分析,结果表明,在近海面气象条件下,各种光波长湍流强度比较接近,且大于微波波段湍流强度;光波段和微波波段湍流强度都随气海温差增大而增强。

The transmission of infrared and microware is influenced by the intensity of atmospheric turbulence,while the turbulence is scaled with the refractive index structure parameter.The parameters are quite different for infrared and microware band.Refractive index calculation and simulation are made in this paper.Some useful conclusions are presented.Under the same situation,the refractive index structure parameter for optical band is much stronger the that for microwave band.Different wavelengths of the optical band have similar structure parameter.Difference exists but it′s small.