Research on Smart Space Oriented Location Awareness Method
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    Abstract:

    Smart space is a result of pervasive computing embodying the integration of computer, communication and digital media technology, which makes it possible to integrate the physical world and the virtual world in theinformation space together as a whole. Location awareness is a key technology of smart space, and is the basicservice needed by other applications. Multidimensional scaling (MDS) is a technique in mathematical psychology,which can the distance or dissimilarity measures between points and produce a representation of the data in a smallnumber of dimensions. In the paper, MDS is used to derive node locations that fit those estimated distances, and asmart space oriented location awareness method (SSOLA) is proposed, which can position all the nodes of thenetworks accurately only by means of the connectivity information—who is within communications range of whom.Provided with known positions for several anchor nodes, the absolute positions for all nodes can be got by SSOLA. Simulation studies demonstrate that SSOLA is more robust to measurement error, and has less positioning error, lesstime cost and better scalability than previous proposals in the same conditions. Furthermore, it can achievecomparable results using much fewer anchor nodes than previous methods, and even yields relative coordinateswhen no anchor nodes are available. SSOLA can be used in large and heavy traffic wireless environment, such asintelligent battlefield, tactical internet, etc.

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明亮,赵刚,谢桂海,王春雷.面向智能空间的位置感知方法研究.软件学报,2009,20(3):671-681

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History
  • Received:July 19,2007
  • Revised:October 26,2007
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