逆合成孔径雷达系统建模与仿真

Modeling and Simulation of ISAR System

逆合成孔径雷达(ISAR)可以获得运动目标的高分辨图像,具有广阔的应用前景,然而ISAR研究面临着缺乏实验平台和数据支撑的困难。首先,介绍了ISAR成像原理;然后,按照ISAR成像流程,将仿真系统划分为引导信息、回波信号、信号处理、二维成像、宽带识别等模块,建立了各个模块所包含的数学模型与仿真模型;最后,设计了ISAR数学仿真系统的系统功能和模块交互结构,给出了系统实现。应用表明,该系统具有灵活的内部结构和较为通用的交互接口,有利于不同算法的内嵌,可以为ISAR技术研究提供仿真平台和仿真数据支撑。

Inverse Synthetic Aperture Radar （ISAR） is able to obtain high resolution image of moving target, which has fine application prospect. The lack of experiment platform and support data is the problem faced in the study on ISAR. In this paper, the ISAR imaging principle was introduced. Then, the simulation system was divided into the modules of guidance information, echo signal, signal processing,2D imaging, and wideband recognition etc according to ISAR imaging procedure, of which the mathematical models and simulation models were established. Finally, the system function and module interactions were designed for the ISAR simulation system. Application showed that the system has flexible structure and universal interacting interfaces, and is easy for embedding of various algorithms, which may provide a simulation platform and simulation data support for ISAR research.