海底能見(jiàn)度測(cè)量方法的研究
[Abstract]:In this paper, the semiconductor laser is modulated. The modulated laser beam is divided into transmission beam and reflection beam by split-beam flattening. The transmitted beam is used as the probe beam and the reflected beam as the reference beam. At the same time, the scattering power of the probe beam at 35 擄angle in the forward scattering region and the power of the reference beam are measured, and the angular scattering coefficient is calculated by the ratio of the scattering power to the reference light power. When the laser output optical power fluctuates, the detection beam and the reference beam fluctuate synchronously, and the ratio of the scattering light power to the reference light power is not affected by the light source fluctuation. Using 2 渭 m quartz particles as the scattering source, the device was tested. The results show that the angular scattering coefficient is linear with the concentration of quartz particles, and the correlation coefficient is 0.99. Two-channel measurement can be used to measure underwater visibility.
【作者單位】: 江蘇大氣海洋光電探測(cè)重點(diǎn)實(shí)驗(yàn)室;江蘇省大氣環(huán)境與裝備技術(shù)協(xié)同創(chuàng)新中心;南京信息工程大學(xué)物理與光電工程學(xué)院;南京信息工程大學(xué)電子與信息工程學(xué)院;
【基金】:公益性(氣象)行業(yè)專項(xiàng)(GYHY201206037) 江蘇省科技支撐計(jì)劃資助項(xiàng)目(BE2010733)
【分類號(hào)】:P714;TN248
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