A novel method to suppress noise in marine radar images based on pulse-pulse correlation

Xianwen Ding; Peng Chen; Shengqi He; Zongsheng Zheng

doi:10.1117/12.901651

8 December 2011 A novel method to suppress noise in marine radar images based on pulse-pulse correlation

Xianwen Ding, Peng Chen, Shengqi He, Zongsheng Zheng

Proceedings Volume 8002, MIPPR 2011: Multispectral Image Acquisition, Processing, and Analysis; 800211 (2011) https://doi.org/10.1117/12.901651
Event: Seventh International Symposium on Multispectral Image Processing and Pattern Recognition (MIPPR2011), 2011, Guilin, China

Abstract

As the X-band marine radar often suffers from interference of electromagnetic waves of the same frequency transmitted by radars in its vicinity, the acquired images frequently contain co-channel interference noise. The noise degrades the quality of the marine radar images and is unfavorable to the processing and interpretation of the marine radar images. To suppress the noise in marine radar images, a novel method based on pulse-pulse correlation is proposed. This method includes three steps: threshold segmentation, noise extraction and noise fixing. In the threshold segmentation step, the threshold T is calculated based on the K distribution sea clutter model. In the noise extraction step, a 3×3 window is applied. By using the window, the pixels of noise can be extracted, and at the same time the pixels of non-noise can be discarded. In the noise fixing step, the strategy of piecewise interpolation is applied. At the region near to the image center, the triangulation with linear interpolation algorithm is applied; at the region far from the image center, the nearest neighbor algorithm is applied. The real X band marine radar image was used to test the performance of the proposed method. The obtained results show that the proposed method is able to reduce the co-channel interference noise from the marine radar images significantly and keep the information of objects in the images such as ships and islands. Besides, the proposed method can be fast in speed of operation.

Citation Download Citation

Xianwen Ding, Peng Chen, Shengqi He, and Zongsheng Zheng "A novel method to suppress noise in marine radar images based on pulse-pulse correlation", Proc. SPIE 8002, MIPPR 2011: Multispectral Image Acquisition, Processing, and Analysis, 800211 (8 December 2011); https://doi.org/10.1117/12.901651

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KEYWORDS

Radar

Ocean optics

Digital filtering

Signal to noise ratio

Image segmentation

Image filtering

X band

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