光场非等距双向传播的实时信号处理系统  

Real-time signal processing system for non-equidistant two-way propagation of light field

作　　者：袁敏[1] 曹妍[1] 王媛媛[1] YUAN Min;CAO Yan;WANG Yuanyuan(School of Information Engineering,Yancheng Institute of Technology,Yancheng Jiangsu 224051,China)

机构地区：[1]盐城工学院信息工程学院,江苏盐城224051

出　　处：《激光杂志》2021年第4期192-196,共5页Laser Journal

基　　金：江苏省省科技厅科技支撑计划项目(No.BY2016065-09)。

摘　　要：为解决传统实时信号处理系统存在的处理精度较低,传输时延较长等问题,提出一种光场非等距双向传播的实时信号处理系统。在原始瑞利范围基础上,将光束传播区域进行分类,根据创建的空间直角坐标系,获取非等距双向传播步长的更新条件;将DSP与FPGA进行融合,设计硬件整体框架的核心部分,实现硬件的正常运行;利用双路信号获取完整信号幅度信息与相位信息;依据相控阵列天线运行理论,获取阵内相位差值与区域接收通道决定性因素,对通道接收信号表达式进行架构,依据正交信号与相位差的相位补偿,获取相应输出信号矩阵,采用加权因子计算得出最终实时信号处理结果。仿真结果表明:采用所提系统处理实时信号的精度高达98%,且处理后的实时信号传输时延较短,具有一定可行性。In order to solve the problems of low processing accuracy and long transmission delay existing in the traditional real-time signal processing system,a real-time signal processing system with non-equidistant two-way propagation of the optical field is proposed.Based on the original Rayleigh range,the beam propagation area is classified.The updated conditions of unequal bidirectional propagation step length are obtained according to the spatial rectangular coordinate system created.The DSP and FPGA are integrated to design the core part of the overall hardware framework to realize the hardware’s regular operation.The complete signal amplitude information and phase information are obtained using the two-way signal,while the phased array antenna is used to obtain the complete signal amplitude information and phase information.According to the orthogonal signal and phase difference phase compensation,the corresponding output signal matrix is acquired.We receive the final real-time signal processing result from the weighting factor calculation,which shows that the accuracy of real-time signal processing by the proposed system is up to 98%,and the real-time signal transmission delay after processing is short,which is feasible.

关 键 词：光场非等距 双向传播 实时信号 处理系统 更新条件 双路信号 

分 类 号：TN393[电子电信—物理电子学]