基于光电协同的雷达实时信号处理技术

Real-Time Radar Signal Processing Based on Optics-Electronics Cooperative Information Processing

随着雷达系统在通道数量、带宽和分辨率上的不断提升,对于数据处理能力和处理速度提出更高的要求。在一些特定的应用场合,体积、功耗等也是数据处理机设计时需要考虑的重要因素。单纯依靠数字技术的雷达信号处理模式已经或者即将暴露出在运算能力、运算速度和功耗等方面的局限性。本文立足于新型信息处理理论和方法的研究,提出了光电协同信息处理技术。该技术将光学复杂运算与电子学逻辑控制相结合,利用空间光学信息处理完成高密度、海量数据的算术运算,利用电子学处理完成传输控制、逻辑运算等操作。光电协同处理具有高速并行的处理特点,而且处理主要依靠光学无源器件,功耗极低。最后给出了光电协同信息处理技术在合成孔径雷达成像处理和阵列雷达波束形成处理上应用的实例。

With the increase of the number of channels, bandwidth and resolution, it makes greater de- mands on data handling capacity and speed. In some specific applications, the volume and power con- sumption are important factors to consider when designing a data processor. The radar signal processing mode, which relies solely on digital technology, has exposed limitations in computing power, computing speed and power consumption. Based on the research of new information processing theory and method, this paper puts forward the optics-electronics cooperative information processing. The technology com- bines optical computing operations with electronic logic control, utilizes the spatial optical information pro- cessing to complete the high-density and massive data arithmetic operations, and applies the electronic process- ing to the transmission control, logic operations and other operations. Photoelectric co-processing has high- speed parallel processing characteristics and the processing relies heavily on optical passive devices with very low power consumption. This paper provides the examples of applications about the optics-electronics cooperative information processing in synthetic aperture radar image formation and array radar beamforming.