{"title":"双线阵列合成孔径技术","authors":"I. Yang, Seung-Yong Yang, Ki-Man Kim","doi":"10.1109/OCEANS.2001.968086","DOIUrl":null,"url":null,"abstract":"We propose a synthetic aperture technique for a twin-line array. The towed line array system has been investigated in underwater environments to improve the signal-to-noise ratio and angular resolution. But to achieve that, it required a long aperture size. It caused physical problems-fluctuations, sensor positioning, towing array etc. It has a left-right ambiguity at the receiver between the opposite angles. To resolve these problems, we use a twin-line. It cause an angular error due to the shorter aperture size when the same number of sensors is used. To improve the signal-to-noise ratio and angular resolution we process the synthetic aperture for the twin-line. A method is presented here that synthesizes apertures in the beam domain using FFT and performs coherent processing of sub-aperture signals at successive time intervals.","PeriodicalId":326183,"journal":{"name":"MTS/IEEE Oceans 2001. An Ocean Odyssey. Conference Proceedings (IEEE Cat. No.01CH37295)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2001-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Synthetic aperture technique for twin-line array\",\"authors\":\"I. Yang, Seung-Yong Yang, Ki-Man Kim\",\"doi\":\"10.1109/OCEANS.2001.968086\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"We propose a synthetic aperture technique for a twin-line array. The towed line array system has been investigated in underwater environments to improve the signal-to-noise ratio and angular resolution. But to achieve that, it required a long aperture size. It caused physical problems-fluctuations, sensor positioning, towing array etc. It has a left-right ambiguity at the receiver between the opposite angles. To resolve these problems, we use a twin-line. It cause an angular error due to the shorter aperture size when the same number of sensors is used. To improve the signal-to-noise ratio and angular resolution we process the synthetic aperture for the twin-line. A method is presented here that synthesizes apertures in the beam domain using FFT and performs coherent processing of sub-aperture signals at successive time intervals.\",\"PeriodicalId\":326183,\"journal\":{\"name\":\"MTS/IEEE Oceans 2001. An Ocean Odyssey. Conference Proceedings (IEEE Cat. No.01CH37295)\",\"volume\":\"1 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2001-11-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"MTS/IEEE Oceans 2001. An Ocean Odyssey. Conference Proceedings (IEEE Cat. No.01CH37295)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/OCEANS.2001.968086\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"MTS/IEEE Oceans 2001. An Ocean Odyssey. Conference Proceedings (IEEE Cat. No.01CH37295)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/OCEANS.2001.968086","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
We propose a synthetic aperture technique for a twin-line array. The towed line array system has been investigated in underwater environments to improve the signal-to-noise ratio and angular resolution. But to achieve that, it required a long aperture size. It caused physical problems-fluctuations, sensor positioning, towing array etc. It has a left-right ambiguity at the receiver between the opposite angles. To resolve these problems, we use a twin-line. It cause an angular error due to the shorter aperture size when the same number of sensors is used. To improve the signal-to-noise ratio and angular resolution we process the synthetic aperture for the twin-line. A method is presented here that synthesizes apertures in the beam domain using FFT and performs coherent processing of sub-aperture signals at successive time intervals.