基于启发式蚁群算法的高保真信号重构

High-fidelity signal reconstruction based on heuristic ant colony algorithm

在当前的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技术(DRFM)实现。随着雷达瞬时工作带宽和捷变频范围的增大,如何实现对超宽带雷达信号的高保真重构是实际工程中面临的重要难题。文中基于启发式蚁群算法,结合数字信道化思想,实现了在现有有限的硬件平台基础上,对超宽带雷达信号的高精度重构。最后,通过仿真和实验验证了该方法的有效性。

In the current application of 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).With the increase of radar instantaneous working bandwidth and agile frequency conversion range,how to realize high-fidelity reconstruction of ultra-wideband radar signals is an important problem in practical engineering.Based on the heuristic ant colony algorithm combined with the idea of digital channelization,the high-precision reconstruction of ultra-wideband radar signals is realized based on the existing limited hardware platform.Finally,the effectiveness of the proposed method is verified by simulations and experiments.