{"title":"TH-CDMA信号的时变采样周期跟踪环路","authors":"Kai Liu, Xiye Guo, Jun Yang","doi":"10.1109/SIPROCESS.2016.7888314","DOIUrl":null,"url":null,"abstract":"Time-hopping signal structure is adopted for overcoming the near-far problem in the Ground-based Navigation System. The signal model of TH-CDMA signal is presented. To track the pulse signals with pseudorandom active-timeslot, tracking loops with time-varying sampling periods are designed. The linear model of the second order TVSP-PLL is presented. The stability of the time-varying model is analyzed based on the First Method of Lyapunov for the linear time-varying system. A transient-response simulation of the second order TVSP-PLL is provided as a verification. The ranging performance of the TVSP-DLL is evaluated. A hardware experiment and a MATLAB simulation are used to verify the noise performance of the TVSP-DLL. The tracking loops with time varying sampling periods are implemented on the FPGA platform and MATLAB. The simulation and experiment results show that the ranging accuracy can achieve centimeter level.","PeriodicalId":142802,"journal":{"name":"2016 IEEE International Conference on Signal and Image Processing (ICSIP)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2016-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":"{\"title\":\"Tracking loops with time-varying sampling periods for the TH-CDMA signal\",\"authors\":\"Kai Liu, Xiye Guo, Jun Yang\",\"doi\":\"10.1109/SIPROCESS.2016.7888314\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Time-hopping signal structure is adopted for overcoming the near-far problem in the Ground-based Navigation System. The signal model of TH-CDMA signal is presented. To track the pulse signals with pseudorandom active-timeslot, tracking loops with time-varying sampling periods are designed. The linear model of the second order TVSP-PLL is presented. The stability of the time-varying model is analyzed based on the First Method of Lyapunov for the linear time-varying system. A transient-response simulation of the second order TVSP-PLL is provided as a verification. The ranging performance of the TVSP-DLL is evaluated. A hardware experiment and a MATLAB simulation are used to verify the noise performance of the TVSP-DLL. The tracking loops with time varying sampling periods are implemented on the FPGA platform and MATLAB. The simulation and experiment results show that the ranging accuracy can achieve centimeter level.\",\"PeriodicalId\":142802,\"journal\":{\"name\":\"2016 IEEE International Conference on Signal and Image Processing (ICSIP)\",\"volume\":\"58 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2016-08-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"3\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2016 IEEE International Conference on Signal and Image Processing (ICSIP)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/SIPROCESS.2016.7888314\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2016 IEEE International Conference on Signal and Image Processing (ICSIP)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/SIPROCESS.2016.7888314","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Tracking loops with time-varying sampling periods for the TH-CDMA signal
Time-hopping signal structure is adopted for overcoming the near-far problem in the Ground-based Navigation System. The signal model of TH-CDMA signal is presented. To track the pulse signals with pseudorandom active-timeslot, tracking loops with time-varying sampling periods are designed. The linear model of the second order TVSP-PLL is presented. The stability of the time-varying model is analyzed based on the First Method of Lyapunov for the linear time-varying system. A transient-response simulation of the second order TVSP-PLL is provided as a verification. The ranging performance of the TVSP-DLL is evaluated. A hardware experiment and a MATLAB simulation are used to verify the noise performance of the TVSP-DLL. The tracking loops with time varying sampling periods are implemented on the FPGA platform and MATLAB. The simulation and experiment results show that the ranging accuracy can achieve centimeter level.
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