基于超宽巷与小波变换的北斗周跳探测与定位方法研究

发布时间：2018-06-09 12:59

本文选题：北斗周跳 + 超宽巷　；参考：《计算机与应用化学》2016年11期

【摘要】：北斗载波相位观测值中出现周跳,将严重影响导航定位的精准性。为了探测出三频观测数据中的周跳特别是小周跳,本文提出超宽巷及小波变换的方法。首先用超宽巷与二阶历元差分构造出高灵敏度的周跳检验量,然后结合小波变换奇异性探测原理,对构造出的周跳检验量进行小波分解得到小波系数,根据小波系数的模量极大值点探测并定位周跳,而后将探测出的周跳值进行取整修复。经实验验证,该方法可构造出灵敏度较高的周跳检验量,并且能有效探测北斗三频载波相位中1周的小周跳及1周以下的粗差。
[Abstract]:Cycle slip in Beidou carrier phase observation will seriously affect the accuracy of navigation and positioning. In order to detect the cycle slip, especially the small cycle jump, a method of ultra-wide lane and wavelet transform is proposed in this paper. In this paper, a high sensitivity cycle slip test is constructed by using ultra-wide lane and second order epoch difference, and then wavelet coefficients are obtained by wavelet decomposition of the constructed cycle slip test quantity, which is based on the singularity detection principle of wavelet transform. The cycle slip is detected and located according to the maximum value of the modulus of wavelet coefficient, and then the detected cycle slip is restored by rounding. The experimental results show that this method can construct the cycle slip detection quantity with high sensitivity and can effectively detect the small cycle slip and the gross error of less than one week in the Beidou three-frequency carrier phase.
【作者单位】：昆明理工大学信息工程与自动化学院;复杂工业过程检测控制与优化重点实验室;
【基金】：国家自然科学基金资助项目(61563024) 云南省科技计划资助项目(2013DH034)
【分类号】：P228

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