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提出了一种利用多光束阵列在复杂散射信道中进行二维图案传输的理论模型。与传统多光束传输方案思路不同,该模型有效利用信道的强散射特性,使各光束充分扩散,在接收面形成交迭区域,成像光学系统在该区域内接收光信号并恢复各发射光束的空间位置信息,完成二维图案信息在空潜信道中的多通道传输。视在参数的引入使光束原本在两个不同折射率介质中的传输简化为仅在一种介质中传输的简单问题。实验采用直径为15 mm的微透镜阵列以及长为12.65 m的海水、大气信道来模拟实际信道中的强散射作用,结果表明该模型具有较好的可行性。
A theoretical model of two-dimensional pattern transmission in complex scattering channels using multi-beam arrays is proposed. Different from the traditional idea of multi-beam transmission scheme, this model effectively utilizes the strong scattering characteristic of the channel to make the beams fully diffuse and form an overlapping area on the receiving surface. The imaging optical system receives the optical signals in the area and restores the space of each emitting beam Location information, to complete the two-dimensional pattern information in the empty channel of multi-channel transmission. The introduction of the apparent parameter simplifies the transmission of the light beam originally in two different refractive index media to the simple problem of transmission in only one media. Experiments using a micro-lens array with a diameter of 15 mm and a seawater and atmospheric channel of 12.65 m in length to simulate the strong scattering in the actual channel show that the model is feasible.