AAL	Active and Assisted Living
BLE	Bluetooth Low Energy
DWNA	Discrete White Noise Acceleration Model
ECDF	Empirical Cumulative Distribution Function
RSS	Received Signal Strength
TCXO	Temperature Compensated Crystal Oscillator
TDOA	Time Difference of Arrival
TOA	Time of Arrival
UKF	Unscented Kalman Filter
UT	Unscented Transform
UWB	ultra-wideband