空潜信道中基于多光束阵列的二维图案传输

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。

2D Pattern Transfer Based on Multi-Beam Array in Air-Water Channel

A novel optical communication scheme of 2D pattern transfer model based on multi-beam array in complex channel is proposed. The model makes full use of the strong scattering of channel.Spreading of the beams produces an overlapping area at the receiver plane.The reconstruction of the initial 2D pattern spatial position information can be performed by an imaging optics system within the area.The introduction of apparent parameters reduces the complex beam propagation inside two kinds of mediums to a brief propagation only inside air medium,which simplifies the theoretical analysis.A proof-of-concept experiment employs a micro lens array each diameter of which is 15 mm and sea water and atmosphere channel with length of 12.65 m to simulate the strong scattering in real case.The results indicate good feasibility of the proposed model.