基于 OFDM 的宽带混沌干扰信号产生技术

摘要

A wideband adaptive chaotic multi-target jamming system based on OFDM technique is pro-posed.According to the OFDM modulation framework,together with the pseudo-random perfor-mance and sensitivity to the initial value of chaotic sequence,this system can control the jamming fre-quency and power spectral density (PSD)easily and jam multi targets simultaneously.The chaotic se-quence is chosen as the base-band source signal due to its good pseudo-random performance,low com-putational complexity and some other advantages.Simulation results show that this system has the ability to control the jamming frequency and PSD and jam multi targets.%根据 OFDM 调制特点，并结合混沌序列伪随机以及初值敏感特性，提出了一种基于 OFDM 技术的宽带自适应多目标混沌干扰系统。该系统可灵活实现干扰频带控制，并能根据目标特征灵活调整功率谱形，还可以实现多目标同时干扰。该系统选用混沌序列作为基带干扰源，具有类随机性能好、计算量小、序列数量众多等优点。仿真结果表明：该系统具有灵活的干扰频带和功率控制能力以及优异的时频遮盖性能，可用于对多目标进行自适应干扰。