斜度相似度的ISAR干扰效果评估方法

Evaluation Method of Jamming Effect on ISAR Based on the Pitch Similitude Degree

由于逆合成孔径雷达(ISAR)是一种新体制雷达,一些用于评估常规体制雷达干扰效果的方法和手段对于ISAR来说并不适用。通过比较干扰前后目标图像灰度的变化,提出了基于斜度相似度的ISAR干扰效果评估方法,可以反映干扰对目标图像灰度的影响程度。该方法不仅计算简单,而且具有归一化的优点。最后,就射频噪声和噪声调频两种干扰模式对ISAR进行了干扰仿真,仿真结果验证了评估方法的正确性和有效性。

Some methods used to evaluate the jamming effect of common radar are unsuitable to ISAR because of its new work system.By comparing the change of image gray,a novel evaluation method of jamming effect on ISAR Based on the pitch similitude degree is presented in the paper,which can reflect the impact on the target image gray by the jamming.The method not only can be computed easily,but also has the merit of unitary.Furthermore,Two typical noise barrage jamming modes,radio frequency（RF） noise jamming and frequency modulation（FM） noise jamming are carried out in the paper,the results of simulation prove the method is corrective and effective.