Abstract
A theoretical approach of acquiring arrival angles of signals sensed by sensor nodes in linear wireless sensor networks is introduced. The arrival angles of signals can be obtained by the estimation of signal covariance matrices. In this article, firstly, the existence of the solution to the estimation problem is studied intensively. Later on, the solution to this problem of estimating real-valued covariance matrices is discussed by the approach of maximum-likelihood estimation. Finally, this approach is expanded to the realm of complex-valued covariance matrices.
This paper is sponsored by National Natural Science Foundation of China(NSFC) with Grant No. 60873003, No.60873195 and Ph. D. Programs Foundation of Ministry of Education of China with Grant No. 2010JYBS0762.
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Han, J., Ding, X., Shi, L., Han, D., Wei, Z. (2012). A Theoretical Study on the Orientation Problem in Linear Wireless Sensor Networks. In: Wang, X., Zheng, R., Jing, T., Xing, K. (eds) Wireless Algorithms, Systems, and Applications. WASA 2012. Lecture Notes in Computer Science, vol 7405. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-31869-6_64
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DOI: https://doi.org/10.1007/978-3-642-31869-6_64
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