| 跟踪及数字中继卫星系统扩频调制方案研究 |
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| 引用本文： | 刘春平,安鹤男. 跟踪及数字中继卫星系统扩频调制方案研究[J]. 深圳大学学报(理工版), 2002, 19(1): 35-39 |
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| 作者姓名： | 刘春平 安鹤男 |
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| 作者单位： | 深圳大学科技研究院,深圳,518060 |
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| 摘 要： | 讨论了跟踪及数字中继卫星系统（TDRSS）一种新的扩频调制方案，即并行MSK扩频。根据不同的TDRSS业务在I路和Q路根据数据率的高低选择扩频或不扩频，给出了QPSK扩频调制和并行MSK扩频调制的表达式和实现模型，并建立了MATLAB仿真模型，理论分析和仿真结果都证实并行MSK扩频调制的频谱特性优于QPSK扩频调制。
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| 关 键 词： | TDRSS QPSK 并行MSK扩频 “跟踪及数字中继卫星系统” 扩频调制 频谱特性 航天器 |
| 文章编号： | 1000-2618(2002)01-0035-05 |
| 修稿时间： | 2001-10-31 |
The Study of the Spread-spectrum Modulation Scheme of TDRSS |
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| LIU Chun ping and AN He nan Science and Technology Institute Shenzhen University Shenzhen P.R.China. The Study of the Spread-spectrum Modulation Scheme of TDRSS[J]. Journal of Shenzhen University(Science &engineering), 2002, 19(1): 35-39 |
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| Authors: | LIU Chun ping and AN He nan Science and Technology Institute Shenzhen University Shenzhen P.R.China |
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| Affiliation: | LIU Chun ping and AN He nan Science and Technology Institute Shenzhen University Shenzhen 518060 P.R.China |
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| Abstract: | A novel spread spectrum scheme of Tracking and Data Relay Satellite System, i.e.the parallel MSK spread spectrum modulation is discussed in this paper. According to various TDRSS services, spread spectrum modulation is used or not. The signal equations and the implementation models of QPSK spread spectrum and parallel MSK spread spectrum modulation are presented. It is testified that the spectrum efficiency and the rolling drop characteristic of parallel MSK spread spectrum modulation is superior to QPSK spread spectrum modulation by the emulation results. |
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| Keywords: | TDRSS QPSK parallel MSK spread spectrum modulation |
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