The water sound speed and temperature can be calculated by measuring Brillouin scattering frequency shift.
借助测量水体布里渊散射的频移，可得到水体声速或温度。
In this paper, the step frequency response equation of optical-region radar target is firstly established by using theories of multiple scattering centers and local resonance.
本文首先根据多散射中心理论与局部谐振原理，建立了雷达目标在光学区阶梯频率波形激励下的响应方程。
Based on the multi scattering center theory, the frequency model describing electromagnetic scattering characteristics of target is developed.
首先从目标多散射中心理论出发，推演了描述目标散射特性的频域散射数学模型。
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