Research on Optical Communication Channels in Complex Ocean Environments

The intricate nature of ocean environments, particularly the presence of oceanic turbulence, poses significant challenges to underwater optical communication systems. Existing studies rarely address the combined effects of absorption, scattering, and turbulence, and no unified function currently exists to accurately fit the Channel Impulse Response(CIR) curves under such complex conditions. To bridge this gap, this paper proposes a high-precision channel model to simulate composite ocean environments. Furthermore, to overcome the absence of closed-form expressions for CIR in these scenarios, we introduce a novel curve-fitting method based on composite exponential functions. Theoretical analysis validates the rationality and robustness of the proposed approach.