动态可重构的宽带数字信道化射频存储技术

A Study on Dynamic Reconfigurable Broadband Digital Channelized RF Storage Technology

在当前的宽带雷达电子战和雷达射频半实物仿真系统应用中,有源干扰信号和雷达目标回波信号的模拟主要通过宽带数字射频存储器(DRFM)实现。随着雷达瞬时工作带宽和捷变频范围越来越大,由此带来的DRFM实时处理和数据传输能力一定程度上也遇到了瓶颈。文中提出一种新型宽带DRFM系统的设计方法和架构。该方法采用实时动态复系数滤波技术,实现了在现有硬件技术水平上,对超宽带雷达信号的实时动态存储;同时,结合启发式蚁群算法,利用动态可重构架构,实现了对超宽带雷达信号的高精度复现,并通过仿真和实验验证了文中方法的有效性。

In the current application of wideband radar electronic warfare and radar RF hardware-in-the-loop simulation systems,the simulation of active jamming signals and radar target echo signals is mainly realized by wideband digital radio frequency storage technology(DRFM).As the radar′s instantaneous operating bandwidth and agile frequency range become larger,the resulting real-time processing and data transmission capabilities of DRFM have also encountered a bottleneck to a certain extent.To this end,this paper proposes a design method and architecture of a new broadband DRFM system.This method uses real-time dynamic complex coefficient filtering technology to achieve real-time dynamic storage of ultra-wideband radar signals based on existing limited hardware platforms.At the same time,combined with a heuristic ant colony algorithm,using a dynamic reconfigurable architecture,High-precision reproduction of UWB radar signals.Finally,the effectiveness of the proposed method is verified by simulations and experiments.