| 引用本文: | 李建,聂俊伟,陈华明,等.等效载噪比评估全球导航卫星系统接收机误码率的适应性分析.[J].国防科技大学学报,2017,39(4):92-98.[点击复制] |
| LI Jian,NIE Junwei,CHEN Huaming,et al.Limits analysis of effective carrier-to-noise ratio in evaluating bit error ratio of global navigation satellite system receiver[J].Journal of National University of Defense Technology,2017,39(4):92-98[点击复制] |
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| 等效载噪比评估全球导航卫星系统接收机误码率的适应性分析 |
| 李建, 聂俊伟, 陈华明, 王飞雪 |
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(国防科技大学 电子科学与工程学院， 湖南 长沙 410073)
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| 摘要: |
| 等效载噪比是全球导航卫星系统接收机捕获、数据解调和跟踪性能的重要指标。近年来，研究人员取得大量以等效载噪比为指标的干扰影响分析研究成果，但鲜有等效载噪比适应性分析。为此，展开等效载噪比适应性研究。在推导单频干扰下接收机等效载噪比和误码率模型基础上，得出特定条件下等效载噪比评估数据解调性能失效的结论。同时，深入分析等效载噪比失效的机理，给出等效载噪比指标的适用条件。仿真实验验证了理论分析的正确性。 |
| 关键词: 全球导航卫星系统 信干噪比 误码率 |
| DOI：10.11887/j.cn.201704014 |
| 投稿日期：2016-03-06 |
| 基金项目:青年科学基金资助项目（61403413） |
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| Limits analysis of effective carrier-to-noise ratio in evaluating bit error ratio of global navigation satellite system receiver |
| LI Jian, NIE Junwei, CHEN Huaming, WANG Feixue |
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(College of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China)
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| Abstract: |
| Effective C/N0(carrier-to-noise ratio) is an important index of GNSS (global navigation satellite system) receiver data demodulation and tracking performance. During past years, analysis of interferences effects on effective C/N0 have been put forward. However, effective C/N0 limits analysis hasn’t been presented. Thus, effective C/N0 limits were analyzed. The theory model of effective C/N0 and BER (bit error ratio) were derived in the presence of CWI(continuous wave interference), and results show that effective C/N0 fails to evaluate data demodulation performance under specific condition. Then, the mechanism of effective C//N0 malfunction was elaborated and the application condition of effective C//N0 was presented. Finally, theory analysis is verified by simulations. |
| Keywords: global navigation satellite system signal-to-interference-plus-noise ratio bit error ratio |
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