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Adaptive step length estimation algorithm using optimal parameters and movement status awareness
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- Authors
- Issue Date
- 2011-11
- Publisher
- Elsevier
- Citation
- Med Eng Phys 33 2011;33:1064-71
- Keywords
- Adaptive step length estimation ; Optimal parameters ; Movement status awareness ; Ubiquitous health monitoring
- Abstract
- An adaptive step length estimation algorithm operating with optimal parameters and a movement status
awareness algorithm are proposed. The proposed algorithm was developed as a means for increasing the
accuracy in estimating walking distances. The algorithm was applied to pedestrian navigation system,
ubiquitous health monitoring systems, and so forth. The algorithms optimal parameters were derived
after measurement errors were taken into consideration. The movement status awareness algorithm
was designed using a walking characteristic called the acceleration variance. After estimating a subjects
walking distance using the proposed algorithm, the measured error was 4.8% with respect to actual
walking distance. Alternatively, estimating a subjects walking distance without the algorithm yielded
an error of 20% with respect to actual walking distance.
- ISSN
- 1350-4533
- Language
- English
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