Analog and Digital Signals and Systems

Detecting Period and Burst Durations in Video Streaming by Means of Active Probing

“…We can also see the width of 100 for the sub-period in the original signal which contains the three spikes. These capabilities of the serial correlation are well described in [5], and we will use this as basis for analyzing our measurement results for the purpose of validating our method.…”

“…time series) are quite useful [3]. For the purpose of detecting periodic components in traffic pattern and the duration of such, estimators for serial correlation [4], [5] (also known as autocorrelation) are known to be very efficient.…”

Вейвлет Корреляции Нестационарных Сигналов

“…В этом случае для двух сигналов Z α (t) и Z β (t), имеющих фурье-компоненты Z α (ν) и Z β (ν), где ν -частота, можно ввести кросс-корреляционную функцию CCF αβ (t) [4,5]. Для анализа изменения спектральных свойств сигнала по времени весь интервал измерения сигнала T обычно делится на M эпох равной продолжительности.…”

Development of a non-contact torque transducer based on the laser speckle contrast method

“…The technique is substantially based on the laser speckle contrast method, commonly employed in roughness measurement, as shown in Toh et al (1998Toh et al ( , 2001, Wang et al (1998), Leonard and Toal (1998) and Yarlagadda (2010). In our application it is used in a torque evaluation supported by the cross-correlation technique for time shift.…”

“…Considering two rotating points in two different shaft sections, the roughness profiles will obviously show a periodic trend. In an unloaded configuration, a cross-correlation (Yarlagadda, 2010) of the two roughness profiles will carry out a function with a maximum in time equal to t dw . If a torque is applied, the two sections will undergo a reciprocal rotation.…”