Yaw in mobile app

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Luis Eduardo Cofré Lizama
评论： Les Beckham 2022-2-18
Dear All, I am currently recording mobile sensors data using the matab app when placing the phone on the chest with staps in vertical position. The orientation (degrees) recorded is Azimuth, Pitch and Roll (XYZ). I was wondering how to obtain Yaw, as I am intending to measure trunk's lateral inclination when moving side to side.
Many thanks
Eduardo

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回答（1 个）

Les Beckham
Les Beckham 2022-2-15
Typically, Azimuth is equivalent to Yaw (also Heading).
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Luis Eduardo Cofré Lizama
Luis Eduardo Cofré Lizama 2022-2-17
Hi again, below is the screenshot of the app, the second pic is the orientation table. Isn't X=Azimuth, Y=Pitch and Z=roll?
Les Beckham
Les Beckham 2022-2-18
Good question. The numbers in the app screenshot don't look even similar to the data table. Did you move the device?
I'm also curious about why the Orientation table is labeled XYZ (instead of Azimuth, Roll, Pitch).
I'd suggest capturing data from the app and the data download without moving the device to help find the correspondence between the axes.

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