摘要
为了在正交频分复用(OFDM)雷达通信一体化共享信号基础上实现雷达通信干扰功能一体化,提出了一种共享波形优化方法。首先分别建立了目标脉冲响应与接收信号的条件互信息、频率选择性信道数据率、干扰熵值等雷达、通信、干扰功能的目标函数,然后建立了权重配置的一体化目标函数,给出了基于遗传算法的OFDM子载波功率优化方法;结果表明:在损失少部分雷达和通信性能信息的前提下,能够使OFDM信号获得较强的干扰能力,使得雷达通信干扰一体化性能最优,并且能够根据雷达、通信、干扰性能的需求,通过优化权重配置,使一体化系统总体性能保持最优,可为雷达通信干扰一体化应用提供理论参考。
In order to realize the jamming function based on the OFDM radar and communication integrated shared signal,an optimization method of radar,communication and interference shared waveform was proposed.The objective functions of radar,communication and jamming functions,such as condition mutual information,frequency selective channel data rate and jamming entropy were established respectively.Then,the integrated objective function of weight configuration was established,and the optimization method of OFDM subcarrier power based on genetic algorithm was given.The results show that under the premise of losing a small part of radar and communication performance,it can make OFDM signal obtain strong jamming ability,and make the radar,communication and jamming integration performance optimal.According to the requirements of radar,communication and jamming performance,it can optimize the overall performance of the integration system by optimizing the weight configuration,which can provide the theory for the integrated application of radar,communication and jamming reference resources.
作者
朱晟坤
杨瑞娟
左家骏
李东瑾
ZHU Shengkun;YANG Ruijuan;ZUO Jiajun;LI Dongjin(Air Force Early Warning Academy, Wuhan 430000, China)
出处
《兵器装备工程学报》
CAS
北大核心
2020年第11期218-223,共6页
Journal of Ordnance Equipment Engineering
基金
xxxx创新特区基金项目(17H86304ZT00302201)。
关键词
正交频分复用
条件互信息
数据信息率
干扰熵值
功率约束
遗传算法
orthogonal frequency division multiplexing(OFDM)
conditional mutual information
data information rate
Interference entropy
power constraint
genetic algorithm
