Improve GPS positioning Accuracy with Context Awareness

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Improve GPS positioning Accuracy with Context
Awareness

• Jiung-yao Huang , Chung-Hsien Tsai

Ubi-Media Computing 2008
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outline

• Motivation
• Context-awareness technology
• Perceptive GPS
• Implement
• Conclusion

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Motivation

• Previous researches in accuracy focus on the
  methods of integrating auxiliary hardware
• Users context information and the basic demand
  of the user are ignored

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Motivation

• Previous researches on improving GPS accuracy can
  be classified into three categories
• WAAS
• Adds auxiliary hardware
• map-matching

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Context-awareness technology

• Emphasizes on human-centric applications
• Includes devices identity, time, temperature,
  location, environmental and any other related
  physical phenomena.
• Applications
• Office and meeting tools, tourists guides,
  fieldwork tools, and memory aids.

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Perceptive GPS

• Basic idea of PGPS research is to be aware
  carriers behavior from received GPS data.
• Consists of two phases
• Training phase
• Rectification phase

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Perceptive GPS
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Implement
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Conclusion

• The main advantage of this approach is that it is
  sensitive to the carriers behavior and do not
  require auxiliary hardware support.

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