摘要
针对航海雷达图像上常见的同频干扰噪声,提出了一种有效的抑制方法。该方法采用阈值分割技术对噪声进行检测,然后对检测出的噪声点进行插值修复。使用X波段航海雷达图像对该方法进行检验。采用信噪比、偏差指数和相关系数等指标进行定量评价。结果表明,提出的新方法既能显著地抑制航海雷达图像的同频干扰噪声,又能较好地保持原始图像的信息,具有良好的降噪效果。它的综合性能明显优于传统的均值滤波和中值滤波方法。
A method on noise suppression for navigation radar images is proposed. Firstly, threshold segmentation is used to detect noise. Then, interpolation is adopted on the detected noise points. The real X-band navigation radar image is used to test the performance of the proposed method. The SNR （Signal to Noise Ratio）, deviation index and correlation coefficient are used to make quantitive evaluation. The results show that the proposed method is able to reduce the co-channel interference noise fi：om the navigation radar images significantly and keep the information of the original images fairly well. Besides, it has an advantage over traditional filtering methods such as mean filtering and median filtering.
出处
《海洋技术》
北大核心
2011年第3期13-16,共4页
Ocean Technology
基金
上海高校选拔培养优秀青年教师科研专项基金资助项目(SSC09023)
