| 基于小波变换的北斗导航信号周跳探测与修复 |
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| 引用本文： | 周亦军. 基于小波变换的北斗导航信号周跳探测与修复[J]. 船舶工程, 2011, 33(Z2): 145-149 |
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| 作者姓名： | 周亦军 |
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| 作者单位： | 海军驻武汉438厂军事代表室; |
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| 摘 要： | 周跳的探测与修复是导航信号数据处理阶段最为重要的任务之一,针对北斗载波相位观测值中出现的周跳,提出一种新的组合方式来探测与修复周跳.该方法首先对载波相位测量数据进行小波变换,根据小波系数的模极大值点的位置探测出发生周跳的历元,然后结合多项式拟合法外推下一个历元的载波相位观测值,将其与实际观测值比较确定周跳的大小,从而修复周跳.同时,通过MATLAB仿真,验证了所提方法的有效性.
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| 关 键 词： | 北斗导航 载波相位 周跳 小波变换 多项式拟合 |
| 收稿时间： | 2011-06-21 |
| 修稿时间： | 2011-06-21 |
Cycle Slip Detection and Correction of COMPASS Based onWavelet Transform |
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| ZHOU Yi-jun. Cycle Slip Detection and Correction of COMPASS Based onWavelet Transform[J]. Ship Engineering, 2011, 33(Z2): 145-149 |
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| Authors: | ZHOU Yi-jun |
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| Affiliation: | ZHOU Yi-jun(The Navy military representative office plant in Factory 438,Wuhan 430060,China) |
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| Abstract: | Cycle slip detection and repair is one of the most important tasks of navigation signal data processing,aim at cycle slip of COMPASS carrier phase,a new combination mode is presented to detect and repair cycle slip.Firstly,carry out the wavelet transform and then determine the location of the cycle slip by ascertaining the point of modulus maximal value of the wavelet coefficients.Then combine with the method of polynomial fitting to extrapolate carrier phase of the next epoch,and determine the number of cy... |
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| Keywords: | COMPASS carrier phase cycle slip wavelet transform polynomial fitting |
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