相干移频干扰幅度补偿技术研究

Amplitude Compensation Technique of Coherent Frequency-Shifting Jamming

基于储频数据的移频干扰可以产生压制或欺骗的干扰效果。但移频带来的信号失配,会导致脉压后不能在雷达显示屏上产生亮度一致的假目标,有可能降低假目标被检测到的概率。基于此,推导了信号失配损失与移频值大小之间的关系,提出了一种采用幅度调制补偿的相干移频干扰方法,可以很好地使得脉压后假目标幅度趋于一致。最后通过仿真验证了该方法的有效性。

Frequency-shifting jamming can be used as a deceptive or blanket jamming technique. But amplitude loss caused by signal mismatch can depress the jamming. The loss may even draw down the detection probability. Therefore, the relationship between the loss and the size of frequency-shifting is deduced and a method based on amplitude compensated modulation is presented to improve the performance of false-targets. Finally, numerical simulations verify the availability of this method.