| 基于TinyOS的TDOA测距误差修正方法 |
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| 引用本文： | 薛皓,万江文,冯仁剑.基于TinyOS的TDOA测距误差修正方法[J].北京邮电大学学报,2008,31(1):22-25. |
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| 作者姓名： | 薛皓 万江文 冯仁剑 |
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| 作者单位： | 北京邮电大学,自动化学院,北京,100876;北京航空航天大学,仪器科学与光电工程学院,北京,100083 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 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.
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| 关 键 词： | 无线传感器网络 定位 测距 测量误差 |
| 文章编号： | 1007-5321（2008）01-0022-04 |
| 收稿时间： | 2007-05-21 |
| 修稿时间： | 2007年5月21日 |
Study on Error Correction Methods in TDOA Distance Measurement Based on TinyOS |
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| XUE Hao,WAN Jiang-wen,FENG Ren-jian.Study on Error Correction Methods in TDOA Distance Measurement Based on TinyOS[J].Journal of Beijing University of Posts and Telecommunications,2008,31(1):22-25. |
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| Authors: | XUE Hao WAN Jiang-wen FENG Ren-jian |
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| Affiliation: | 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 |
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| 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. |
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| Keywords: | wireless sensor networks localization distance measurement measuring error |
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