Method for Similarity Assessment Between Target SAR Images Using Scattering Center Information

Park, Ji-Hoon; Lim, Ho

doi:2019.22.6.735

J. KIMS Technol > Volume 22(6); 2019 > Article

Research Paper

Journal of the Korea Institute of Military Science and Technology 2019;22(6):735-744.
DOI: https://doi.org/10.9766/KIMST.2019.22.6.735

Method for Similarity Assessment Between Target SAR Images Using Scattering Center Information

Ji-Hoon Park, Ho Lim

The 3rd Research and Development Institute, Agency for Defense Development

산란점 정보를 이용한 표적 SAR 영상 간 유사도 평가기법

박지훈, 임호

국방과학연구소 제3기술연구본부

Abstract

One of the key factors for recognition performance in the automatic target recognition for synthetic aperture radar imagery(SAR-ATR) system is reliability of the SAR target database. To achieve optimal performance, the database should be constructed using the images obtained under the same operating condition as the SAR sensor. However, it is impractical to have the extensive set of real-world SAR images, and thus those from the electro magnetic prediction tool with 3-D CAD models are suggested as an alternative where their reliability can be always questionable. In this paper, a method for similarity assessment between target SAR images is presented inspired by the fact that a target SAR image is mainly characterized by the features of scattering centers. The method is demonstrated using a variety of examples and quantitatively measures the similarity related to reliability. Its assessment performance is further compared with that of the existing metric, structural similarity(SSIM).

Key Words: Synthetic Aperture Radar, Automatic Target Recognition, Scattering Center, Similarity Assessment, Look-Up Table