Information content-based determination of optimal sensor number
Information content-based determination of optimal sensor number
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DOI：
10.1109/icumt.2017.8255175
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发表时间：
2017-11
期刊：
影响因子：
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通讯作者：
Ahmad Warda;B. Petkovic;H. Toepfer
中科院分区：
文献类型：
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作者：
Ahmad Warda;B. Petkovic;H. Toepfer
在系统矩阵的伪反演中，为正确的源定位和适当的截断值确定最佳传感器数量的能力是必不可少的，必须严格解决。我们提出了一种基于系统矩阵中包含的信息内容来确定最佳传感器数量的新方法。信息内容的指示器被定义为矩阵列之间的线性依赖关系。此外，信息内容直接定义了截断策略。本文将无线传感器网络（WSNs）中的源定位问题视为一个逆问题，可以很容易地扩展到需要估计源位置的大量应用中。这种线性逆问题出现在工程和数学科学的许多领域。同样重要的是，本研究中的所有模拟都是无噪声的。
The ability to determine the optimal number of sensors for correct source localization and proper truncation value in pseudo-inverting of a system matrix is essential and has to be addressed rigorously. We propose a new methodology for determining the optimal number of sensors, based on the information content contained in a system matrix. An indicator of information content is defined as a linear dependency between columns of the matrix. Furthermore, the information content defines truncation strategy directly. The paper considers the problem of source localization in wireless sensor networks (WSNs) as an inverse problem and can be easily extended to a plethora of applications where source location has to be estimated. Such linear inverse problems arise in many areas of engineering and mathematical sciences. It is also important to mention that all simulations in this study are noise-free.