| 一种扩频高度表的载波跟踪方案 |
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| 引用本文： | 张功学,田宝杰,李建强. 一种扩频高度表的载波跟踪方案[J]. 计算机测量与控制, 2010, 18(1) |
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| 作者姓名： | 张功学 田宝杰 李建强 |
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| 作者单位： | 1. 陕西科技大学机电学院,陕西,西安,710021
2. 94170部队,陕西,西安,710082 |
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| 摘 要： | 为了解决机载扩频高度表在高动态及低信噪比环境下易受干扰的缺点,并提高高度表工作性能,详细分析了频偏对伪码相关峰值的影响和载波相位误差对解调性能的影响,在此基础上提出了一种适用于扩频高度表的载波跟踪方案,并阐述了方案的实现原理,同时对方案进行了跟踪性能的分析;通过Matlab对方案进行了数字化仿真,给出了实现的部分效果分析;理论分析和仿真结果表明,该方案的运用能在动态环境下快速及精确地实现扩频高度表接收机的载波跟踪。
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| 关 键 词： | 扩频高度表 载波跟踪 锁频环 锁相环 |
Scheme for Carrier Tracking of the Spread Spectrum Altimeter |
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| Zhang Gongxue,Tian Baojie,Li Jianqiang. Scheme for Carrier Tracking of the Spread Spectrum Altimeter[J]. Computer Measurement & Control, 2010, 18(1) |
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| Authors: | Zhang Gongxue Tian Baojie Li Jianqiang |
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| Affiliation: | 1.Shanxi University Of Science & Technology Mechanical and Electrical Engineering Institute/a>;Xi' an 710021/a>;China/a>;2.94170 Army/a>;Xi' an 710082/a>;China |
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| Abstract: | For resolving the Characteristics of the airborne spread spectrum altimeter is interfered easily in the high-dynamic and low SNR environment,increasing the working function,The article analysis in detail the influence of the frequency departure in the PC peak value and the influence of the carrier lagging error in the demodulate,presents the scheme of carrier tracking which applied to spread spectrum altimeter,and explains the realization principle of the scheme.meanwhile analysis the tracking characteristi... |
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| Keywords: | spread spectrum altimeter carrier tracking FLL PLL |
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