| GPS软件接收机信号捕获频率分辨率的研究 |
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| 引用本文： | 宁春林,施浒立,李圣明,崔君霞,胡超.GPS软件接收机信号捕获频率分辨率的研究[J].计算机工程与应用,2008,44(6):14-16. |
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| 作者姓名： | 宁春林 施浒立 李圣明 崔君霞 胡超 |
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| 作者单位： | 中国科学院国家天文台,北京,100012 |
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| 基金项目： | 国家重点基础研究发展规划(973)(the National Grand Fundamental Research 973 Program of Chinaunder Grant No.2007CB815500)。 |
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| 摘 要： | 为了提高GPS软件接收机信号捕获的载波频率分辨率,在频域并行频率空间搜索捕获方法中,利用加大分析数据长度可以提高频率分辨率的优点,结合频域并行码空间搜索捕获方法,构成了一种混合搜索方法。仿真结果表明本方法在略微增加捕获时间的基础上提高了载波频率分辨率,保证了后续信号频率跟踪环节的准确性和快速性。
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| 关 键 词： | GPS软件接收机 捕获 频率分辨率 |
| 文章编号： | 1002-8331（2008）06-0014-03 |
| 收稿时间： | 2007-10-10 |
| 修稿时间： | 2007-12-11 |
Study on frequency resolution of signal acquisition in GPS software receiver |
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| NING Chun-lin,SHI Hu-li,LI Sheng-ming,CUI Jun-xia,HU Chao.Study on frequency resolution of signal acquisition in GPS software receiver[J].Computer Engineering and Applications,2008,44(6):14-16. |
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| Authors: | NING Chun-lin SHI Hu-li LI Sheng-ming CUI Jun-xia HU Chao |
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| Affiliation: | National Astronomical Observatories of China，Chinese Academy of Sciences，Beijing 100012，China |
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| Abstract: | Frequency resolution can be advanced by adding the data length with parallel frequency space search acquisition method.In order to improve carrier frequency resolution of GPS software receiver,utilizing parallel frequency space search acquisition method and parallel code phase search acquisition method,a mix search acquisition method is put forward.Simulation results show that high carrier frequency resolution can be obtained with adding a little search acquisition time and the veracity and speed of next signal frequency tracking loop can be guaranteeed. |
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| Keywords: | GPS software receiver acquisition frequency resolution |
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