战术数据链射频辐射特征控制技术

摘要

传统的链路自适应技术只追求高效数据传输，会导致射频暴露，在电子战中无法保障数据链载体的安全性。以战术数据链主动射频隐身和高效通信为研究对象，利用多目标优化技术联合控制战术数据链的射频辐射特征(包含辐射时间、辐射功率和辐射波形)，建立了一种战术数据链链路自适应技术模型。该模型以给定距离的截获概率和给定距离的可靠传输速率为二重优化目标，以辐射特征为优化变量，并以第四代宽带无线通信系统LTE-A ( Long Term Evolution-Advanced)的部分调制编码参数为实例，证实了由所述链路自适应技术模型优化所得的最优解可以同时实现数据链的射频隐身和高效数据传输。%In electronic warfare,RF exposures incurred by the traditional technique of radio link adaption, which purely maximizes the data rates,will jeopardize the carrier's safety of datalink systems. For active RF stealth and reliably efficient data transmission,this paper presents a link adaption model to jointly control the RF radiation characteristics( including radiation time,power and waveforms) for tactical datalinks. The proposed model applies multiple objective optimizations by modeling reliable communication rates and in-terception probabilities of RF signals from datalinks at given distance as double objectives, and radiation properties ( including radiation time, power and waveforms) as variables. Using partial schemes of the modulations and coding of the 4 th generation wideband wireless communications ( Long Term Evolution-Advanced,LTE-A) as instances,the best solution shows that the active RF stealth and reliably efficient data transmission can be simultaneously achieved by the proposed model.