| MSAS基带信号处理关键技术 |
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| 引用本文： | 刘文焘,谢金石. MSAS基带信号处理关键技术[J]. 时间频率学报, 2009, 32(2): 129-133 |
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| 作者姓名： | 刘文焘 谢金石 |
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| 作者单位： | 1. 中国电子科技集团公司第十研究所,成都,610036
2. 中国人民解放军61081部队,北京,100094 |
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| 摘 要： | 给出了日本MSAS（多功能卫星增强系统）基带信号处理各项关键技术的算法原理，并对2006年在成都高楼上采集的MSAS卫星信号数据通过软件进行了基带信号处理，验证了各关键技术算法原理的正确性。另外，提出对GPS接收机增加1个MSAS通道以便提高我国GPS卫星导航接收机的定位精度和进一步增强GPS卫星导航完好性监测。
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| 关 键 词： | 日本多功能运输星基增强系统 维特比译码 循环冗余校验 |
Key Techniques of Baseband Signal Processing for Multi-Functional Satellite Augmentation System |
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| LIU Wen-tao,XIE Jin-shi. Key Techniques of Baseband Signal Processing for Multi-Functional Satellite Augmentation System[J]. Journal of Time and Frequency, 2009, 32(2): 129-133 |
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| Authors: | LIU Wen-tao XIE Jin-shi |
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| Affiliation: | LIU Wen-tao, XIE Jin-shi (1. the 10rd Institute of China Electronics and Technology Group Corporation, Chengdu 610036, China; 2. the Unit 61081 of PLA, Beijing 100094, China) |
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| Abstract: | The key techniques of the baseband signal processing for the MSAS(multi-functional satellite augmentation system) is introduced. For the IF data of MSAS, which were sampled and stored at the top of a building in Chengdu in 2006, the baseband signal processing is realized through software, and the algorithm principle of the key techniques is verified. Besides, it is proposed to add a MSAS processing channel to the GPS receiver so as to improve the positioning precision and strengthen the GPS integrity monitoring. |
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| Keywords: | multi-functional satellite augmentation system Viterbi decoding CRC(cyclic redundancy check) |
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