| 一种GPS L1C/A与L2C双频信号的捕获算法 |
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| 引用本文： | 王忠,刘光斌.一种GPS L1C/A与L2C双频信号的捕获算法[J].通信技术,2011,44(1):27-28,31. |
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| 作者姓名： | 王忠 刘光斌 |
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| 作者单位： | 第二炮兵工程学院303教研室,陕西,西安,710025 |
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| 摘 要： | 为提高双频信号的捕获速度,通过对L1C/A码进行捕获后,利用L1与L2波段之间频率关系导频捕获L2信号频率,利用L1C/A码对应20个CM码起始码片的可能点捕获到L2C码。验证表明该算法能够实现L1C/A和L2C信号的快速捕获,大大减小了对L2波段的频率搜索重复性和捕获L2C码的运算量,能够实现双频信号的快速捕获,对精度较高的双频接收机的研究有一定参考价值。
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| 关 键 词： | L1C/A L2C 双频信号 导频捕获 |
GPS Acquisition of L1C/A and L2C Dual-frequency Signals |
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| WANG Zhong,LIU Guang-bin.GPS Acquisition of L1C/A and L2C Dual-frequency Signals[J].Communications Technology,2011,44(1):27-28,31. |
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| Authors: | WANG Zhong LIU Guang-bin |
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| Affiliation: | (No.303 Staff Room,The Second Artillery Engineering College,Xi’an Shaanxi 710025,China) |
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| Abstract: | In order to raise the speed for GPS acquisiton of dual-frequency signals,after the acquision of L1C/A code,the L2 signal frequency is acquired by the relationship of the L1 with L2 carrier and then the L2C code origination is acquired by utilizing the C/A code in corresponding to 20 possible points of CM code.Simulation shows that the acquisition algorithm could quickly realize the acquisition of L1C/A and L2C,and greatly reduce the space of frequency search and the burden of computation.The acquisition algorithm could serve as a reference for the research of dual-frequency receiver. |
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| Keywords: | L1C/A L2C |
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