摘要
雷达回波信号模拟是雷达系统研制的重要组成部分,通过分析对比三种信号模拟方法各自的特点,根据实际工程背景选择了一种最适合的宽带雷达回波信号模拟器设计方法。该设计方法基于FPGA+AD9957结构,文中首先以固定点目标为例分析了ISAR信号目标回波的特点,然后根据相应的回波信号特点介绍了模拟器的设计思路及模块构成并阐述了基于AD9957的宽带信号生成方式。经实验证明,该回波信号模拟器具有输出带宽大和产生复杂信号的能力,满足工程技术指标要求。
Radar echo signal simulation is an important part of radar system design. Through analysis and comparison of three signal simulation methods, this paper proposes a wideband radar echo simulator best suitable for practical implementation. The method is based on FPGA and AD9957. Firstly, the paper analyzes the signal characteristic of ISAR（Inverse Synthetic Aperture Radar） echo of fixed-point target, and then introduces the idea of designing the simulator and its components. After that, it introduces how to generate wideband signal using AD9957. It proves that the simulator is capable of generating wideband and complex radar signal and meeting the engineering requirements.
出处
《雷达科学与技术》
2010年第2期125-128,共4页
Radar Science and Technology
