一种复合的SAR压制干扰方法研究

覆盖式干扰是一种对合成孔径雷达有效的干扰样式,有效覆盖面积是评价覆盖干扰效果的重要指标之一,如何有效地对干扰范围进行扩展是研究的热点问题,具有较高的研究价值。在介绍3种不同干扰方法的原理与干扰效果之后,对方法进行了结合,提出了1种可以有效扩展干扰区域范围的干扰模型。方法以二维锯齿调频干扰为基础,利用频移干扰扩展距离向干扰区域,利用方位向间歇采样技术扩展方位向干扰区域。不仅原理简单,更加利于工程实现。最后,利用单一点目标对方法进行了验证,仿真实验的结果证实了方法的准确性与可靠性。

A Composite SAR Barrage Jamming Method

Barrage jamming is an effective jamming style to SAR and its effective coverage area is an important index to estimate the jamming effect.A hot and highly valued subject of research is effective extension of the jammed area.Following introduction of the principles and jamming effects of three methods,an integrated model for extension of the jammed area is put forward.Based on 2D sawtooth frequency modulated jamming,frequency-shift jamming is used to extend the jammed area in range and azimuth intermittent sampling is used to extend the jamming area in azimuth.The method features simplified theory and convenience for engineering implementation.Accuracy and reliability of the method is verified by simulation.