基于特征矩阵匹配的干扰效果评估方法

针对相关性评估准则在实际应用中存在敏感于目标旋转等问题,提出了一种新的基于特征矩阵匹配的干扰效果评估方法。该方法不是直接计算干扰前后图像的相关系数,而是经过图像变换得到一个具有旋转不变性的特征矩阵,然后计算特征矩阵的相关系数,其结果能够反映图像受干扰后失真的程度,而且评估结果具有客观、定量和归一化的优点。最后就射频噪声干扰和噪声调频干扰两种噪声干扰样式进行了干扰仿真,仿真结果表明了该方法的有效性和可行性。

Evaluation Method of Jamming Effect Based on Matching of Feature Matrix

Aiming at the problem of relativity criterion meeting in actual cases of jamming effect evaluation, a novel evaluation method of jamming effect based on matching of feature matrix is proposed. This mclhod does not only compute correlation coefficient of image with and without jamming directly, but also gela feature matrix which has rotation invariance using image processing technology, and compute corrclation coefficient of feature matrix. Themelhod can reflecl the distortion degree of jamming image and is objectivc quantitaliw, and unilary. In the end, two noise jamming modes arc employed in simulation. The resuh shows that validity and feasibility of proposed method.