Reduction of wireless sensor node localization errors
Reduction of wireless sensor node localization errors
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发表时间：
2008
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通讯作者：
Yang Xianhui
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作者：
Yang Xianhui
采用三面测量法、加权最小二乘估计法和鲁棒最小二乘估计法提高无线传感器网络节点定位精度。针对一组特定的假设，改进了三面测量法和基于三面法的最小二乘估计法。采用鲁棒最小二乘估计方法改进节点定位。仿真结果表明，这些方法减小了定位误差。鲁棒最小二乘估计方法在减小系统误差的情况下优于其他方法。当能耗比较重要时，采用改进的三面测量法或加权最小二乘估计法。
A three-sided measurement method,a weighted least squares estimation method and a robust least squares estimation method are used to make wireless sensor network node localization more accurate.The three-sided measurement method and the least squares estimation method based on the three-sided method are improved for a specific set of assumptions.A robust least squares estimation method is used to improve node localization.Simulations show that these methods reduce the localization error.The robust least squares estimation method is better than the others with decreasing system errors.When the energy consumption is more important,the improved three-sided measurement or the weighted least square estimation method is preferred.