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SUMMARY:Trajectory Determination and Analysis in Sports by Satellite and I
 nertial Navigation
DTSTART:20090123T170000
DTSTAMP:20260405T204917Z
UID:469229328393852eda7402a7be5f471a883ae8848596b79299e9add0
CATEGORIES:Thesis defenses
DESCRIPTION:Adrian Wägli\nThis research presents methods for performance 
 analysis in sports through the integration of Global Positioning System (G
 PS) measurements with Inertial Navigation System (INS). The described appr
 oach focuses on strapdown inertial navigation using Micro-Electro-Mechanic
 al System (MEMS) Inertial Measurement Units (IMU). A simple inertial error
  model is proposed and its relevance is proven by comparison to reference 
 data. The concept is then extended to a setup employing several MEMS-IMUs 
 in parallel. The performance of the system is validated with experiments i
 n skiing and motorcycling. The position accuracy achieved with the integra
 ted system varies from decimeter level with dual-frequency differential GP
 S (DGPS) to 0.7 m for low-cost\, single-frequency DGPS. Unlike the positio
 n\, the velocity accuracy (0.2 m/s)\nand orientation accuracy (1−2 deg) 
 are almost insensitive to the choice of the receiver hardware. The orienta
 tion performance\, however\, is improved by 30 − 50% when integrating fo
 ur MEMS-IMUs in skew-redunant configuration. Later part of this research i
 ntroduces a methodology\nfor trajectory comparison. It is shown that traje
 ctories based on dual-frequency GPS positions can be directly modeled and 
 compared using cubic spline smoothing\, while those derived from single-fr
 equency DGPS require additional filtering and matching.
LOCATION:CM 1 2 https://plan.epfl.ch/?room==CM%201%202
STATUS:CONFIRMED
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