| TDRSS中多普勒频移消除方法的研究 |
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| 引用本文： | 刘兆辉,章仁飞. TDRSS中多普勒频移消除方法的研究[J]. 合肥工业大学学报(自然科学版), 2006, 29(7): 839-842 |
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| 作者姓名： | 刘兆辉 章仁飞 |
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| 作者单位： | 1. 合肥工业大学,计算机与信息学院,安徽,合肥,230009
2. 中国电子科技集团公司,第38研究所,安徽,合肥,230031 |
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| 摘 要： | 在TDRS通信系统中,用户星相对于中继星的高动态性引入的多普勒频移对扩频信号的捕获造成了很大的困难。文章在分析多普勒频移对PN码捕获性能影响的基础上,采用基带正交对消法去消除多普勒频移,消除了多普勒频移对PN码捕获电路的影响,解决了低信噪比情况下在基带上消除多普勒频移的难题。
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| 关 键 词： | 通信与数据中继卫星 数字匹配滤波器 多普勒频移 正交对消 |
| 文章编号： | 1003-5060(2006)07-0839-04 |
| 修稿时间： | 2005-06-08 |
Research on the method of elimination of the Doppler shift in the TDRSS |
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| LIU Zhao-hui,ZHANG Ren-fei. Research on the method of elimination of the Doppler shift in the TDRSS[J]. Journal of Hefei University of Technology(Natural Science), 2006, 29(7): 839-842 |
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| Authors: | LIU Zhao-hui ZHANG Ren-fei |
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| Abstract: | In the tracking and data relay satellite system(TDRSS),it is difficult for a receiver operating in the high dynamic situation to realize spread spectrum signal acquisition.In this paper,the influence of the Doppler shift on the performance of the PN code acquisition circuit is analyzed,and the method of orthogonally relative elimination is proposed to eliminate the Doppler shift.The method can not only eliminate the influence of the Doppler shift but also solve the problem of baseband elimination of the Doppler shift in the low SNR situation. |
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| Keywords: | tracking and data relay satellite(TDRS) digital matched filter Doppler shift orthogonally relative elimination |
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