基于时变钟差消除的室内载波相位定位算法

范绍帅; 荣志强; 田辉; 李立华; 秦晓琦

doi:10.11959/j.issn.1000-436x.2021164

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基于时变钟差消除的室内载波相位定位算法

学术论文 | 更新时间：2024-06-05

- 基于时变钟差消除的室内载波相位定位算法
- Indoor carrier phase positioning algorithm based on time-varying clock error elimination
- 通信学报 2021年42卷第9期页码：165-172
- 作者机构：
  
  北京邮电大学网络与交换技术国家重点实验室，北京 100876
- 作者简介：
  
  [ "范绍帅（1987− ），男，山东烟台人，博士，北京邮电大学讲师，主要研究方向为5G及后5G组网及关键技术、智能信息处理及网络自组织技术、高精度定位技术" ]
  [ "荣志强（1997− ），男，天津人，北京邮电大学硕士生，主要研究方向为载波相位定位技术、协作定位技术" ]
  [ "田辉（1963− ），女，河南郑州人，博士，北京邮电大学教授、博士生导师，主要研究方向为先进移动通信系统及无线网络技术" ]
  [ "李立华（1976− ），女，天津人，博士，北京邮电大学教授，主要研究方向为新一代宽带移动通信理论与关键技术、星地融合接入及传输技术，包括同步、随机接入、大规模MIMO等" ]
  [ "秦晓琦（1988− ），女，北京人，博士，北京邮电大学讲师，主要研究方向为下一代无线网络基础理论及性能分析、智能化物联网中基于信息价值的通信、计算资源优化策略与算法设计" ]
- 基金信息：
  
  国家自然科学基金资助项目(61801044);国家自然科学基金资助项目(61801045)
- DOI：10.11959/j.issn.1000-436x.2021164
  中图分类号： TN92
- 网络出版日期：2021-09，
  
  纸质出版日期：2021-09-25
- 稿件说明：
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范绍帅, 荣志强, 田辉, 等. 基于时变钟差消除的室内载波相位定位算法[J]. 通信学报, 2021,42(9):165-172.

Shaoshuai FAN, Zhiqiang RONG, Hui TIAN, et al. Indoor carrier phase positioning algorithm based on time-varying clock error elimination[J]. Journal on communications, 2021, 42(9): 165-172.
范绍帅, 荣志强, 田辉, 等. 基于时变钟差消除的室内载波相位定位算法[J]. 通信学报, 2021,42(9):165-172. DOI： 10.11959/j.issn.1000-436x.2021164.

Shaoshuai FAN, Zhiqiang RONG, Hui TIAN, et al. Indoor carrier phase positioning algorithm based on time-varying clock error elimination[J]. Journal on communications, 2021, 42(9): 165-172. DOI： 10.11959/j.issn.1000-436x.2021164.

摘要

针对室内无线环境下传统定位算法定位精度不高以及系统时钟不同步影响定位精度等问题，提出一种基于三差分载波相位测量与到达时间差（TDoA）融合的三维定位算法。考虑到无线接入点之间存在的时变钟差会导致定位精度变低，所提算法结合参考终端测量来消除时变钟差的影响，基于三差分载波相位测量进行相对位置的精确估计，并将其与具有无偏性的差分TDoA定位结果进行融合粗估计。进一步通过泰勒展开方法对载波相位观测方程线性化，并通过解算整周模糊度实现更高精度的定位。仿真结果表明，所提算法可以克服时变钟差对定位性能的影响，并能在短时间内完成整周模糊度解算，最终可实现高精度定位。

Abstract

To solve the problems of low positioning accuracy of traditional positioning algorithm and unsynchronized system clock in indoor wireless environment

a 3D positioning algorithm was proposed based on the fusion of triple-differential carrier phase measurements and time difference of arrival (TDoA) positioning.Considering that the time-varying clock offsets between wireless access points lead to lower positioning accuracy

the measurements from a reference terminal were used to eliminate the influence of time-varying clock offsets.The relative positions were estimated based on triple-differential carrier phase measurements

which were fused with unbiased differential TDoA positioning results to obtain the interim estimated positions.Furthermore

the carrier phase observation equations were linearized by Taylor expansion method

and the high-accuracy positioning was realized by solving the integer ambiguities.Simulation results show that the proposed algorithm eliminates the influence of time-varying clock offsets on positioning performance

and the integer ambiguities are resolved in a short time to achieve high-accuracy positioning.

关键词

Keywords

references

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