| GPS III首星空间信号质量监测评估 |
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| 引用本文： | 饶永南,王萌,康立,杨德进,卢晓春,王雪.GPS III首星空间信号质量监测评估[J].电子学报,2020,48(2):407-411. |
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| 作者姓名： | 饶永南 王萌 康立 杨德进 卢晓春 王雪 |
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| 作者单位： | 1. 中国科学院国家授时中心, 陕西西安 710600;
2. 中国科学院精密导航定位与定时技术重点实验室, 陕西西安 710600;
3. 中国科学院大学电子电气与通信工程学院, 北京 101408;
4. 中国科学院大学天文学院, 北京 101408 |
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| 摘 要： | GPS （Global Positioning System）在新一代卫星载荷中采用了大量新技术，首颗卫星成功发射后，官方尚未系统公布各导航信号的调制方式、复用方法等关键信息，因而其在轨测试阶段的空间信号质量评估具有重要的意义.该文选择地面接收功率、功率分配、相位关系、调制特性和测距性能等评估参数，深入分析了GPS III卫星L1频点空间信号质量，剖析了该卫星上多种新技术的信号特征.论文成果对其它GNSS（Global Navigation Satellite System）卫星载荷设计及信号体制设计等方面具有重要的参考意义.
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| 关 键 词： | GNSS信号 GPS III卫星 卫星导航 空间信号质量 测距性能 频谱分析 |
| 收稿时间： | 2019-04-19 |
Signal-in-Space Quality Monitoring and Assessment for the First GPS III Satellite |
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| RAO Yong-nan,WANG Meng,KANG Li,YANG De-jin,LU Xiao-chun,WANG Xue.Signal-in-Space Quality Monitoring and Assessment for the First GPS III Satellite[J].Acta Electronica Sinica,2020,48(2):407-411. |
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| Authors: | RAO Yong-nan WANG Meng KANG Li YANG De-jin LU Xiao-chun WANG Xue |
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| Affiliation: | 1. National Time Service Center, Chinese Academy of Sciences, Xi'an, Shaanxi 710600, China;
2. Key Laboratory of Precision Navigation and Timing Technology, Chinese Academy of Sciences, Xi'an, Shaanxi 710600, China;
3. School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 101408, China;
4. College of Astronomy, University of Chinese Academy of Sciences, Beijing 101408, China |
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| Abstract: | GPS III (Global Positioning System) satellites have adopted a large number of new technologies in payload.After the successful launch of the first satellite, the official has not yet published effective information such as the modulation method of each navigation signal and multiplexing method.Therefore, it is meaningful to evaluate the signal-in-space quality.In this paper, the evaluation parameters such as ground receiving power, signal component power distribution, phase relationship, modulation characteristics and ranging biases were selected.Signal-in-space quality of GPS III satellite L1 frequency was analyzed comprehensively, and the characteristics of various new technologies adopted by the satellite were analyzed.The results of this paper have important technical reference value for other GNSS (Global Navigation Satellite System) satellite payload design and signal system design. |
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| Keywords: | GNSS signal GPS III satellites satellite navigation signal-in-space quality ranging performance spectrum analysis |
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