Definitions for Detectiondɪˈtɛk ʃən
This page provides all possible meanings and translations of the word Detection
the perception that something has occurred or some state exists
"early detection can often lead to a cure"
detection, catching, espial, spying, spotting(noun)
the act of detecting something; catching sight of something
signal detection, detection(noun)
the detection that a signal is being received
detection, detecting, detective work, sleuthing(noun)
a police investigation to determine the perpetrator
"detection is hard on the feet"
The act of detecting or sensing something; discovering something that was hidden or disguised.
the act of detecting; the laying open what was concealed or hidden; discovery; as, the detection of a thief; the detection of fraud, forgery, or a plot
Origin: [L. detectio an uncovering, revealing.]
In general, detection is the extraction of particular information from a larger stream of information without specific cooperation from or synchronization with the sender. In the history of radio communications, the term "detector" was first used for a device that detected the simple presence or absence of a radio signal, since all communications were in Morse code. The term is still in use today to describe a component that extracts a particular signal from all of the electromagnetic waves present. Detection is usually based on the frequency of the carrier wave, as in the familiar frequencies of radio broadcasting, but it may also involve filtering a faint signal from noise, as in radio astronomy, or reconstructing a hidden signal, as in steganography. In optoelectronics, "detection" means converting a received optical input to a electrical output. For example, the light signal received through an optical fiber is converted to an electrical signal in a detector such as a photodiode. In steganography, attempts to detect hidden signals in suspected carrier material is referred to as steganalysis. Steganalysis has an interesting difference from most other types of detection, in that it can often only determine the probability that a hidden message exists; this is in contrast to the detection of signals which are simply encrypted, as the ciphertext can often be identified with certainty, even if it cannot be decoded.
Dictionary of Military and Associated Terms
1. In tactical operations, the perception of an object of possible military interest but unconfirmed by recognition. 2. In surveillance, the determination and transmission by a surveillance system that an event has occurred. 3. In arms control, the first step in the process of ascertaining the occurrence of a violation of an arms control agreement.
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