{"title":"水下金属目标的电磁干扰检测与分类","authors":"F. Shubitidze, B. Barrowes, I. Shamatava","doi":"10.1109/OCEANSE.2019.8867057","DOIUrl":null,"url":null,"abstract":"Electromagnetic induction (EMI) sensing phenomenon are investigated for a conducting and multilayer environment to aid in underwater unexploded ordnance (UXO) detection and classification. The marine environment introduces complexities, such salinity gradient, sharp conductivity changes at air-water-sediment etc., which adversely can affect targets EMI signals and make underwater targets classification more difficult problem than classifying the same buried targets on land. The sensitivity of a secondary EMI signal with respect the water/air and/or water/sediment boundaries and temporal (diffusive EM field propagation speed) variability of EMI fields in an underwater (UW) environment are studied and demonstrated using the unconditionally stable Crank-Nicolson finite different time domain method (FDTD).","PeriodicalId":375793,"journal":{"name":"OCEANS 2019 - Marseille","volume":"6 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2019-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"EMI Sensing for Underwater Metallic Targets Detection and Classification\",\"authors\":\"F. Shubitidze, B. Barrowes, I. Shamatava\",\"doi\":\"10.1109/OCEANSE.2019.8867057\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Electromagnetic induction (EMI) sensing phenomenon are investigated for a conducting and multilayer environment to aid in underwater unexploded ordnance (UXO) detection and classification. The marine environment introduces complexities, such salinity gradient, sharp conductivity changes at air-water-sediment etc., which adversely can affect targets EMI signals and make underwater targets classification more difficult problem than classifying the same buried targets on land. The sensitivity of a secondary EMI signal with respect the water/air and/or water/sediment boundaries and temporal (diffusive EM field propagation speed) variability of EMI fields in an underwater (UW) environment are studied and demonstrated using the unconditionally stable Crank-Nicolson finite different time domain method (FDTD).\",\"PeriodicalId\":375793,\"journal\":{\"name\":\"OCEANS 2019 - Marseille\",\"volume\":\"6 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2019-06-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"OCEANS 2019 - Marseille\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/OCEANSE.2019.8867057\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"OCEANS 2019 - Marseille","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/OCEANSE.2019.8867057","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
EMI Sensing for Underwater Metallic Targets Detection and Classification
Electromagnetic induction (EMI) sensing phenomenon are investigated for a conducting and multilayer environment to aid in underwater unexploded ordnance (UXO) detection and classification. The marine environment introduces complexities, such salinity gradient, sharp conductivity changes at air-water-sediment etc., which adversely can affect targets EMI signals and make underwater targets classification more difficult problem than classifying the same buried targets on land. The sensitivity of a secondary EMI signal with respect the water/air and/or water/sediment boundaries and temporal (diffusive EM field propagation speed) variability of EMI fields in an underwater (UW) environment are studied and demonstrated using the unconditionally stable Crank-Nicolson finite different time domain method (FDTD).