Wei Wang, Robert Wang, Y. Deng, Weidong Yu, Zhimin Zhang, Pei Wang
{"title":"非线性调频机载SAR的脉冲内多普勒效应及实验结果","authors":"Wei Wang, Robert Wang, Y. Deng, Weidong Yu, Zhimin Zhang, Pei Wang","doi":"10.1109/apsar46974.2019.9048341","DOIUrl":null,"url":null,"abstract":"Nonlinear frequency modulation (NLFM) waveforms have been investigated in recent years. The main advantages of the waveform include fine resolution, good signal-to-noise ratio, and good interference mitigation. However, for synthetic aperture radar (SAR), there are hitherto no real applications of NLFM. It is known that Doppler intolerance is the drawback of NLFM waveform. Therefore, in this paper, the two-dimensional NLFM SAR signal model with Doppler shift is formulated and the influences of Doppler shift on airborne SAR imaging are analysed in detail. Furthermore, the first experimental result of airborne NLFM SAR is demonstrated.","PeriodicalId":377019,"journal":{"name":"2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"116 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Intra-pulse Doppler effect and experimental result on nonlinear frequency modulation airborne SAR\",\"authors\":\"Wei Wang, Robert Wang, Y. Deng, Weidong Yu, Zhimin Zhang, Pei Wang\",\"doi\":\"10.1109/apsar46974.2019.9048341\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Nonlinear frequency modulation (NLFM) waveforms have been investigated in recent years. The main advantages of the waveform include fine resolution, good signal-to-noise ratio, and good interference mitigation. However, for synthetic aperture radar (SAR), there are hitherto no real applications of NLFM. It is known that Doppler intolerance is the drawback of NLFM waveform. Therefore, in this paper, the two-dimensional NLFM SAR signal model with Doppler shift is formulated and the influences of Doppler shift on airborne SAR imaging are analysed in detail. Furthermore, the first experimental result of airborne NLFM SAR is demonstrated.\",\"PeriodicalId\":377019,\"journal\":{\"name\":\"2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)\",\"volume\":\"116 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2019-11-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/apsar46974.2019.9048341\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/apsar46974.2019.9048341","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Intra-pulse Doppler effect and experimental result on nonlinear frequency modulation airborne SAR
Nonlinear frequency modulation (NLFM) waveforms have been investigated in recent years. The main advantages of the waveform include fine resolution, good signal-to-noise ratio, and good interference mitigation. However, for synthetic aperture radar (SAR), there are hitherto no real applications of NLFM. It is known that Doppler intolerance is the drawback of NLFM waveform. Therefore, in this paper, the two-dimensional NLFM SAR signal model with Doppler shift is formulated and the influences of Doppler shift on airborne SAR imaging are analysed in detail. Furthermore, the first experimental result of airborne NLFM SAR is demonstrated.