| 基于RSSI与TDOA的混合测距加权定位算法 |
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| 引用本文： | 刘信新,陈鲲.基于RSSI与TDOA的混合测距加权定位算法[J].计算机与数字工程,2011,39(4):25-28. |
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| 作者姓名： | 刘信新 陈鲲 |
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| 作者单位： | 1. 武汉大学计算机学院,武汉430079;武汉数字工程研究所,武汉430074
2. 武汉数字工程研究所,武汉,430074 |
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| 摘 要： | 对RSSI和TDOA测距技术优缺点进行分析,提出了基于（接收信号强度指示（RSSI）和信号到达时间差（TDOA）的混合测距加权定位算法,解决无线传感器网络定位系统中单纯依靠TDOA测距造成信标节点数量不足的问题。该算法根据测距方式的精度差异对测距结果进行加权校正处理,仿真实验表明,通过选择合适的加权值可以大大降低采用RSSI测距方式对定位精度产生的不利影响。
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| 关 键 词： | 无线传感器网络 测距 定位 加权校正 |
A Weighted Localization Algorithm Using a Hybrid of RSSI and TDOA Range Technologies |
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| Liu Xinxin,Chen Kun.A Weighted Localization Algorithm Using a Hybrid of RSSI and TDOA Range Technologies[J].Computer and Digital Engineering,2011,39(4):25-28. |
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| Authors: | Liu Xinxin Chen Kun |
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| Affiliation: | 2)(School of Computer Science,Wuhan University1),Wuhan 430079)(Wuhan Digital Engineering Institute2),Wuhan 430074) |
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| Abstract: | To solve the problem of insufficient beacon nodes caused by the short scope of TDOA range technology,a weighted localization algorithm is presented that combines RSSI and TDOA range technologies.This algorithm includes a weighted correction scheme in which range results is assigned with different weight values in terms of measurement methods.And simulation results show that this correction scheme with proper weight values is able to reduce the RSSI＇s adverse effects on localization results efficiently. |
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| Keywords: | wireless sensor networks range localization weighted correction |
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