Evaluation of a Pedestrian Walking Status Awareness Algorithm for a Pedestrian Dead Reckoning

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Lee, M.S.; Shin, S.H.; Park, C.G.

Issue Date
The Institute of Navigation, Portland, OR, September 21-24, 2010
In this paper we present a PDR (Pedestrian Dead
Reckoning) system with a walking status awareness
algorithm. PDR is a device which provides position
information of the pedestrian. In general, the step length
is estimated using a linear combination of the walking
frequency and the acceleration variance for the mobile
phone. It means that the step length estimation accuracy is
affected by coefficients of the walking frequency and the
acceleration variance which are called step length
estimation parameters. Developed PDR is assumed that it
is embedded in the mobile phone. Thus, we used a single
sensor module which is attached to a waist and a pants
pocket of a pedestrian. A single sensor module consists of
three axis accelerometers, a micro processor and
Bluetooth. The step length estimation parameters can be
different from each phone location and pedestrian`s step
motion such as walk or run. It means that different
parameters can degrade the accuracy of the step length
estimation. Step length estimation result can be improved
when appropriate parameters which are determined by
pedestrian walking status awareness algorithm. In this
paper, the pedestrian walking status awareness algorithm
for PDR is proposed.
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Mechanical Aerospace Engineering (기계항공공학부)Others_기계항공공학부
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