一种基于单频点测量的载波相位定位方法

By introducing a carrier phase positioning method with a reference terminal and a local search algorithm, the problem of insufficient indoor positioning accuracy is solved, achieving centimeter-level high-precision positioning and reducing costs.

CN117376817BActive Publication Date: 2026-07-17BEIJING UNIV OF POSTS & TELECOMM
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING UNIV OF POSTS & TELECOMM
Filing Date
2023-10-10
Publication Date
2026-07-17

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Abstract

一种基于单频点测量的载波相位定位方法，涉及室内定位领域，该方法包括：计算目标终端和参考终端载波相位测量值之间的双重差分；将目标终端的TDOA初步定位结果作为载波相位双差测量方程的泰勒展开点进行泰勒展开，将非线性方程线性化，计算出整周模糊度的浮点解；利用整周模糊度的浮点解计算整数整周模糊度；对整数整周模糊度进行局部搜索选出最小误差函数对应的最优双差整周模糊度测量值；将最优双差整周模糊度测量值转化为单差整周模糊度测量值，得到目标终端到基站的距离，使用TDOA解算方法实现目标终端的定位。本发明解决了目前室内定位中各种定位方法存在的定位精度问题及局限性问题，提高了定位的精度，定位精度可达厘米级。
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