| 引用本文: | 何峰,吴乐南.下一代高效导航卫星信号频谱分析与波形优化[J].哈尔滨工业大学学报,2012,44(9):101.DOI:10.11918/j.issn.0367-6234.2012.09.018 |
| HE Feng,WU Le-nan.Spectral analysis and waveform optimization of signals for future GNSS[J].Journal of Harbin Institute of Technology,2012,44(9):101.DOI:10.11918/j.issn.0367-6234.2012.09.018 |
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| 摘要: |
| 为了使连续相位载波调制的导航卫星信号具备更高的频谱利用率并利于锁相环结构对其捕获与跟踪,在深入分析调制信号频谱的基础上,对导航卫星信号进行了波形优化设计,分别给出了近似重构和解析构造两种方法,仿真结果表明用优化后的波形所调制的导航信号具备更好的功率谱分布,从而更适合下一代全球导航卫星系统． |
| 关键词: 全球导航卫星系统 卫星导航信号设计 连续相位调制 波形优化 频谱效率 |
| DOI：10.11918/j.issn.0367-6234.2012.09.018 |
| 分类号:TN967.1 |
| 基金项目:国家自然科学基金资助项目 (61174205). |
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| Spectral analysis and waveform optimization of signals for future GNSS |
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HE Feng, WU Le-nan
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School of Information Science and Engineering, Southeast Univesity, 210096 Nanjing, China
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| Abstract: |
| Based on in-depth analysis of the modulated signal spectrum, the waveform optimization of the continuous phase carrier modulation is developed including two methods of approximate reconstruction and analytic construction in order to get more compact power distribution without useful information loss. The modulated waveforms having very high spectral efficiency by both of the methods are more conducive to the signal acquisition and tracking using the phase-locked loop structure for future GNSS. |
| Key words: GNSS satellite navigation signal design continuous phase modulation waveform optimization spectral efficiency |
