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Jang-Ping Sheu, Senior Member, IEEE, Pei-Chun Chen, and Chih-Shun Hsu

A Distributed Localization Scheme for Wireless Sensor Networks with Improved Grid-Scan and Vector-Based Refinement. Jang-Ping Sheu, Senior Member, IEEE, Pei-Chun Chen, and Chih-Shun Hsu IEEE TRANSACTIONS ON MOBILE COMPUTING, VOL. 7, NO. 9,J SEPTEMBER 2008. Present by Ting-Wei, Chen. Outline.

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Jang-Ping Sheu, Senior Member, IEEE, Pei-Chun Chen, and Chih-Shun Hsu

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  1. A Distributed Localization Scheme for Wireless Sensor Networks with Improved Grid-Scan and Vector-Based Refinement Jang-Ping Sheu, Senior Member, IEEE, Pei-Chun Chen, and Chih-Shun Hsu IEEE TRANSACTIONS ON MOBILE COMPUTING, VOL. 7, NO. 9,J SEPTEMBER 2008 Present by Ting-Wei, Chen

  2. Outline Introduction Distribute Range-Free Localization Scheme Performance Evaluation Conclusions

  3. Localization • Range-based schemes • Range-free schemes • Distributed Range-free Localization Scheme Introduction

  4. Randomly deployed in a squared region • Have a unique ID • No longer change its location • Get the own location information • Derive a more accurate estimated location Distribute Range-Free Localization Scheme (cont.)

  5. Three phase • Each sensor node exchanges beacons • Each normal node uses the improved grid-scan algorithm • The normal node uses the vector-based refinement scheme to improve the accuracy of its estimated location Distribute Range-Free Localization Scheme (cont.)

  6. Compare DRLS with the existing range-free localization schemes mentioned • All the sensor nodes are homogeneous and have the same fixed communication range • Each node has a unique ID • Not cost too much calculation time and memory Performance Evaluation

  7. Reduce cost • Improve the accuracy • Proposed a fully DRLS Conclusion

  8. Thank you for your attention

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