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遥感技术可区分水温和含盐度效应。本文所提出的可见激光/外差接收器可以遥测海面下的水温和含盐度。它的工作原理基于声波引起的光的声/光散射。水分子的热运动产生高频声波,它通过布里渊散射机理与光相互作用。被水散射的单色激光产生的频移与散射空间的温度和含盐度成比例。频移的范围为兆赫～千兆赫,处于外差
Remote sensing technology distinguishes water temperature from salinity effects. The proposed laser / heterodyne receiver proposed in this paper can remotely measure the temperature and salinity of the sea surface. Its working principle is based on acoustic / light-induced sound / light scattering of sound waves. The thermal motion of water molecules produces high-frequency sound waves that interact with light through the Brillouin scattering mechanism. The frequency shift produced by the monochromatic laser light scattering is proportional to the temperature and salinity of the scattering space. The range of frequency shift is megahertz to gigahertz, which is in heterodyne