Signals are sets of data or information.
One-dimensional signals include single-variable functions, such as the variations in air pressure over time in …
Signals are categorized as Continuous-time or discrete-time, Periodic or aperiodic, Analog or digital, and Causal or noncausal.
A continuous-time signal …
Basic signal operations are time reversal, scaling, shifting, and amplitude transformations.
Time reversal mirrors a continuous-time signal about the …
Linearity is a system property with a direct input-output relationship, combining homogeneity and additivity.
Homogeneity dictates that if an input is …
Continuous-time systems have continuous input and output signals, with time measured continuously, and are generally defined by differential or algebraic …
Galvanometer mirrors are used for optical applications such as target tracking, drawing, and scanning control because of their high speed and accuracy. …
Channel sounders are used to measure channel characteristics for radio systems. There are several types of channel sounders used today: continuous-wave …