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A geometrically intuitive quaternion-based complementary filter has been developed, which estimates the attitude of a smartphone using signals obtained from the device’s internal magnetic and inertial measurement unit. This method introduces two correction factors $\mu _{_{a}}$ , which governs the rate at which the accelerometer corrects the pitch/roll angle, and $\mu _{_{m}}$ , which controls the...
The rapid aging of the world's population, along with an increase in the prevalence of chronic illnesses and obesity, requires adaption and modification of current healthcare models. One such approach involves telehealth applications, many of which are based on sensor technologies for unobtrusive monitoring. Recent technological advances, in particular, involving microelectromechnical<?Pub /_nolinebreak...
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