| 基于TDOA的超声波测距误差分析与改进 |
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| 引用本文： | 赵海,张宽,朱剑,李大舟.基于TDOA的超声波测距误差分析与改进[J].东北大学学报(自然科学版),2011,32(6):802-805. |
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| 作者姓名： | 赵海 张宽 朱剑 李大舟 |
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| 作者单位： | 东北大学信息科学与工程学院,辽宁沈阳,110819 |
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| 基金项目： | 高等学校科技创新工程重大项目培育资金项目(708026) |
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| 摘 要： | 基于TDOA的超声波测距模型认为距离为声波的速度与时间差之积,忽略了温度等因素对速度的影响,此外,系统计时的误差影响了时间差测量,导致测距精度不高.分析了基于TDOA原理的超声波测距系统误差的主要来源,建立模型,通过实验对温度、距离衰减及时间差测量进行补偿,利用超声波反射特性对障碍物进行测距,并利用多探头在一定程度上削...
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| 关 键 词： | TDOA 超声波测距 误差修正 最小二乘法 可调放大器 |
Error Analysis and Improvement of Ultrasonic Distance Measuring Based on TDOA |
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| ZHO Hai,ZHANG Kuan,ZHU Jian,LI Da-zhou.Error Analysis and Improvement of Ultrasonic Distance Measuring Based on TDOA[J].Journal of Northeastern University(Natural Science),2011,32(6):802-805. |
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| Authors: | ZHO Hai ZHANG Kuan ZHU Jian LI Da-zhou |
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| Institution: | ZHAO Hai,ZHANG Kuan,ZHU Jian,LI Da-zhou(School of Information Science & Engineering,Northeastern University,Shenyang 110819,China.) |
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| Abstract: | It's considered that the distance equals the square of sound velocity and time difference in TDOA(time difference of arrival) based distance measuring models which ignore the affect of temperature and other factors.Furthermore,the system timing error has impact on the measurement of time difference.The sources of the inference are analyzed,and the mathematic model is established.According to the experiment,the compensations of temperature,distance attenuation and time difference measurement are achieved.Usi... |
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| Keywords: | TDOA ultrasonic distance measuring error correct least square method adjustable amplifier |
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