Applications of Signals
Some of the applications of signal are listed below:
- These are mainly used in telecommunication industry for transmitting data and information through signals.
- Signals are used in satellite communication and radar systems to detect or communicate to various objects like planes and satellites.
- Signals also finds their application in medical field for various purposes like ECG tests, ultrasound and CT scan.
- Signals are also used in weather forecasting and also in other monitoring techniques like checking pollution levels, estimating temperature and humidity of the day, etc.
- Media channels broadcasting through televisions and radios takes place by via signals.
What are the Different Types of Signals?
An electrical signal is a physical quantity that varies with time. It varies with any dependent or independent quantity. A signal can either be one-dimensional or multi-dimensional. When the function which varies with time depends only on a single variable then that type of signal is referred to as a one-dimensional signal. Examples of such signals are audio signals, biometrics like pulse or heartbeat, light wave signals, etc. On the other hand, a signal that is dependent on more than one time-dependent variable, then that type of signal is known as a multi-dimensional signal. Examples of two-dimensional signals are electromagnetic signals, video signals, etc. A signal is a mathematical representation of energy.
Thus, signal is a time-dependent function that can be dependent on one or more than one physical quantity for the transference of data and information with or without the presence of the medium. Electromagnetic wave signals can travel in a vacuum whereas sound and electrical signals require a medium for their propagation.
Table of Content
- Signals
- Characteristics of Signal
- Operations on Signal
- Classification of Electric Signals
- Applications of Signals
- Advantages of Signals
- Disadvantages of Signals