{"title":"层状介质的三维时域有限差分法亚表面散射计算","authors":"U. Oguz, L. Gurel","doi":"10.1109/APS.1997.631711","DOIUrl":null,"url":null,"abstract":"The finite-difference time-domain (FDTD) method is suitable for solving scattering problems that contain several inhomogeneities such as multiple objects of different material properties buried in a layered medium. The advantage of the FDTD method is that the number of unknowns remains the same and a small amount of extra modeling effort is needed for these problems. We have developed a three-dimensional (3D) FDTD computer program that employs pure scattered-field formulation and perfectly matched layers (PML) as the absorbing boundary condition (ABC) of choice. The purpose of this study is to model a subsurface radar and to observe and distinguish between the fields scattered from various buried objects with different parameters such as the size, depth, number, etc.","PeriodicalId":283897,"journal":{"name":"IEEE Antennas and Propagation Society International Symposium 1997. Digest","volume":"13 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1997-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"8","resultStr":"{\"title\":\"Subsurface-scattering calculations via the 3D FDTD method employing PML ABC for layered media\",\"authors\":\"U. Oguz, L. Gurel\",\"doi\":\"10.1109/APS.1997.631711\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The finite-difference time-domain (FDTD) method is suitable for solving scattering problems that contain several inhomogeneities such as multiple objects of different material properties buried in a layered medium. The advantage of the FDTD method is that the number of unknowns remains the same and a small amount of extra modeling effort is needed for these problems. We have developed a three-dimensional (3D) FDTD computer program that employs pure scattered-field formulation and perfectly matched layers (PML) as the absorbing boundary condition (ABC) of choice. The purpose of this study is to model a subsurface radar and to observe and distinguish between the fields scattered from various buried objects with different parameters such as the size, depth, number, etc.\",\"PeriodicalId\":283897,\"journal\":{\"name\":\"IEEE Antennas and Propagation Society International Symposium 1997. Digest\",\"volume\":\"13 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1997-07-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"8\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"IEEE Antennas and Propagation Society International Symposium 1997. Digest\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/APS.1997.631711\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Antennas and Propagation Society International Symposium 1997. Digest","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/APS.1997.631711","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Subsurface-scattering calculations via the 3D FDTD method employing PML ABC for layered media
The finite-difference time-domain (FDTD) method is suitable for solving scattering problems that contain several inhomogeneities such as multiple objects of different material properties buried in a layered medium. The advantage of the FDTD method is that the number of unknowns remains the same and a small amount of extra modeling effort is needed for these problems. We have developed a three-dimensional (3D) FDTD computer program that employs pure scattered-field formulation and perfectly matched layers (PML) as the absorbing boundary condition (ABC) of choice. The purpose of this study is to model a subsurface radar and to observe and distinguish between the fields scattered from various buried objects with different parameters such as the size, depth, number, etc.
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