面向全光雷达信号处理的基本光运算理论和方法研究

The microwave photonics technique is used for the signal generation and transmission in photonics-based radar system, its echo signal is processed by digital signal processor. Real-time signal processing is important for some radar applications, but its implementation is determined by the digital processing capabilities. Optical processing provides inherent parallel computing capabilities with ultra-fast speed, its processing speed is determined by the propagation distance of the light beam regardless of the data volume. Optical processing is applied to generate synthetic aperture radar images. Considering the requirements of the photonics-based radar system, this study focuses on the signal processing by using the optical approaches based on microwave photonics and information optics. The theory and the methods of the optical computing oriented towards optical signal processing for photonics-based radar is studied, it is helpful for understanding optics microwave interactions. The research contents consist of the processing model considering the relationship between the electronic and optical processing, the theory and methods of the optical computing, and performance analysis with both the simulation experiments and the verification experiments with optical devices. This study provides a novel and promising approach for real-time radar signal processing, and also provides the theoretical basis of optical signal processing and photonics-based radar system design.

全光雷达利用微波光子学技术实现信号产生和信号发射等功能，回波数据经光采样后由数字技术来完成信号处理，尚未实现全光信号处理。另一方面，实时信号处理对于特定的雷达应用至关重要，但其实现受数字器件处理能力的制约。全光信号处理具有快速并行的特点，处理速度仅与光束传播距离有关而与数据量无关，且合成孔径雷达成像已成功实现了全光处理。因此，课题申请人拟以全光雷达为背景，利用微波光子学和信息光学理论对其全光信号处理问题进行研究，探索面向全光雷达信号处理的光运算理论和方法，对阐明全光信号处理机制和揭示电光对偶处理规律有重要意义。本课题研究全光雷达电光对偶信号处理模型，以及信号处理中的基本光运算理论和方法，同时利用仿真实验和全实物验证实验对光运算的实现方法进行性能分析。通过本课题的研究为雷达信号实时处理提供新的技术思路，为全光信号处理技术和全光雷达系统设计奠定理论基础。

全光雷达利用微波光子学技术实现信号产生和信号发射等功能，回波数据经光采样后由数字技术来完成信号处理，尚未实现全光信号处理。另一方面，实时信号处理对于特定的雷达应用至关重要，但其实现受数字器件处理能力的制约。全光信号处理具有快速并行的特点，处理速度仅与光束传播距离有关而与数据量无关。.本项目以全光雷达为背景，利用微波光子学和信息光学理论对其全光信号处理问题进行研究，探索面向全光雷达信号处理的光运算理论和方法，对阐明全光信号处理机制和揭示电光对偶处理规律有重要意义。本项目研究内容包括：全光雷达电光对偶信号处理模型，基本光运算及信号处理的方法和分析，基本光运算及信号处理的原理验证和性能分析。通过基础理论研究，本项目完成上述研究内容，并对基本光运算、雷达信号处理等进行试验验证。通过本课题的研究为雷达信号实时处理提供新的技术思路，为全光信号处理技术和全光雷达系统设计奠定理论基础。