| 两颗GPS现代化卫星L5载波信号的比较 |
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| 引用本文： | 吴继忠,管栋良.两颗GPS现代化卫星L5载波信号的比较[J].测绘科学,2012,37(3):33-34,10. |
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| 作者姓名： | 吴继忠 管栋良 |
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| 作者单位： | 1. 南京工业大学测绘学院,南京210009;武设大学测绘学院,武汉430079
2. 南京工业大学测绘学院,南京,210009 |
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| 基金项目： | 南京工业大学学科基金资助项目 |
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| 摘 要： | 本文分析了GPS现代化信号L5载波的结构及相对于非现代化信号的改进,比较了GPS L5载波和WAAS L5载波的区别;比较了2颗现代化卫星SVN49和SVN62播发的L5载波的信号结构及信噪比,结果表明:SVN49播发的L5载波演示信号的抗干扰能力较差,而SVN62播发的L5载波具有更强的抗干扰能力,满足设计规范要求。
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| 关 键 词： | GPS现代化 L载波 信号结构 信噪比 |
Comparison of GPS L5 signals from two modernized satellites |
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| WU Ji-zhong
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GUAN Dong-liang.Comparison of GPS L5 signals from two modernized satellites[J].Science of Surveying and Mapping,2012,37(3):33-34,10. |
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| Authors: | WU Ji-zhong GUAN Dong-liang |
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| Institution: | (①College of Geomatics Engineering,Nanjing University of Technology,Nanjing 210009,China;②School of Geodesy and Geomatics,Wuhan University,Wuhan 430079,China) |
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| Abstract: | This paper gave a brief overview of GPS L5 signal structure and improvements brought by GPS L5 signal.Besides,the differences between GPS L5 signal and WAAS L5 signal were analyzed.Afterwards a detailed analysis of the L5 signals transmitted from two modernized satellites was presented.The GPS spacecraft SVN49 carries an L5 demonstration payload which contains a quadrature component only and has significant deviations from the specification,while the L5 transmission from SVN62 which comprises both in-phase and quadrature modulation shows a very favorable signal-to-noise ratio value and better antijamming capability. |
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| Keywords: | GPS modernization L5 signal signal structure signal-to-noise ratio |
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