一种基于光学移频的电子干扰技术分析

Analysis of An Electronic Jamming Technique Based on Optical Frequency Shift

在雷达对抗中,为有效抵抗敌方雷达电子干扰,储频技术起到关键的作用。它能够将敌方复杂的调制信号进行完整的保存,并根据干扰需求以达到最佳干扰效果。提出了一种基于光学移频的射频信号存储方法,利用光移频循环光纤延迟回路实现对射频脉冲的高保真存储。相比于传统的光纤储频,所提出的方法表现出更高的储频效率。从最大存储时间和相位畸变两方面分析了储频架构的性能。

The radio frequency memory technique plays a vital role for effectively resisting the electronic jamming of enemy radar in radar countermeasure.It makes it possible to completely store the complex modulated signal of enemy and achieve optimal jamming effect according to the jamming requirements.This paper proposes a new method storing the radio frequency signal based on optical frequency shift,realizes high fidelity memory to radio frequency pulses by using the cycle fiber-optic delay line loop of optical frequency shift.Compared with the conventional fiber-optic frequency memory method,the proposed method has the advantages of better memory efficiency.The performance of radio frequency memory framework is analyzed in terms of maximum storage time and phase distortion.