Doppler Velocity Estimation of Overlapping Linear-Period-Modulated Ultrasonic Waves Based on an Expectation-Maximization Algorithm

<div>(a) Two overlapping LPM ultrasonic echoes at distances of 0.7 m and 0.75 m from the sound source. (b) Maximizing function of two overlapping echoes: the first and second echoes with 3.3 m/s and 2 m/s, respectively. (c) Percentage of overlap.</div>

Advances in Acoustics and Vibration

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Figure 2

Figure 2: Doppler Velocity Estimation of Overlapping Linear-Period-Modulated Ultrasonic Waves Based on an Expectation-Maximization Algorithm 