北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2008, Vol. 31 ›› Issue (1): 22-25.doi: 10.13190/jbupt.200801.22.056

• 论文 • 上一篇    下一篇

基于TinyOS的TDOA测距误差修正方法

薛 皓1, 万江文2, 冯仁剑2   

  1. 1. 北京邮电大学 自动化学院, 北京 100876; 2. 北京航空航天大学 仪器科学与光电工程学院, 北京 100083
  • 收稿日期:2007-05-14 修回日期:1900-01-01 出版日期:2008-02-28 发布日期:2008-02-28
  • 通讯作者: 薛 皓

Study on Error Correction Methods in TDOA Distance Measurement Based on TinyOS

XUE Hao1, WAN Jiang-wen2, FENG Ren-jian2   

  1. 1. Automatization School, Beijing University of Posts and Telecommunications, Beijing 100876, China;
    2. School of Instrument Science and Opto-electronics Engineering; BeiHang University; Beijing 100083, China
  • Received:2007-05-14 Revised:1900-01-01 Online:2008-02-28 Published:2008-02-28
  • Contact: XUE Hao

摘要:

为进一步提高传感器节点间距离的测量精度,分析了基于TinyOS的TDOA测距方法的误差来源,提出了路径平均温度补偿、时间因子补偿和位同步补偿等误差修正方法,建立了以最小二乘法为基础的误差修正数学模型. 实验结果表明,修正算法及所建立的数学模型能有效抑制测量误差,提高测量精度.

关键词: 无线传感器网络, 定位, 测距, 测量误差

Abstract:

To improve the distance measurement accuracy between sensory nodes, the sources of errors in time difference of arrival (TDOA) distance measurement based on tiny micro threading operating system (TinyOS) were studied. A series of correction methods were put forward on average temperature of path compensation, timing factor compensation and bit synchronization compensation. Based on the least square method, a mathematic model was built to modify the results. Experiments show that the correction algorithm and the mathematical model can control the errors effectively and improve the precision in distance measurement.

Key words: wireless sensor networks, localization, distance measurement, measuring error

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