Chirping
Encyclopedia
In telecommunication
, the term chirping has the following meanings:
1. The rapid changing, as opposed to long-term drifting, of the frequency
of an electromagnetic wave.
Chirping is most often observed in pulsed operation of a source.
2. A pulse compression
technique that uses (usually linear) frequency modulation
during the pulse.
3. A trademarked term in mobile communications used by Nextel and Boost Mobile
for sending voice message
s to a private number in push-to-talk or walkie-talkie
mode.
Telecommunication
Telecommunication is the transmission of information over significant distances to communicate. In earlier times, telecommunications involved the use of visual signals, such as beacons, smoke signals, semaphore telegraphs, signal flags, and optical heliographs, or audio messages via coded...
, the term chirping has the following meanings:
1. The rapid changing, as opposed to long-term drifting, of the frequency
Frequency
Frequency is the number of occurrences of a repeating event per unit time. It is also referred to as temporal frequency.The period is the duration of one cycle in a repeating event, so the period is the reciprocal of the frequency...
of an electromagnetic wave.
Chirping is most often observed in pulsed operation of a source.
2. A pulse compression
Pulse compression
Pulse compression is a signal processing technique mainly used in radar, sonar and echography to increase the range resolution as well as the signal to noise ratio...
technique that uses (usually linear) frequency modulation
Frequency modulation
In telecommunications and signal processing, frequency modulation conveys information over a carrier wave by varying its instantaneous frequency. This contrasts with amplitude modulation, in which the amplitude of the carrier is varied while its frequency remains constant...
during the pulse.
3. A trademarked term in mobile communications used by Nextel and Boost Mobile
Boost Mobile
Boost Mobile is a brand of wireless prepay service run by Sprint Nextel, operating within the Sprint Prepaid Group along with Virgin Mobile USA, Assurance Wireless, and payLo by Virgin Mobile. Boost Mobile uses GSMand iDEN networks...
for sending voice message
Voice message
Voice message refers to a message that could be sent to a destination using voice media. Voice itself could be 'packaged' and sent through the IP backbone so that it reaches its marked 'address'. In a technical sense, the process of sending 'voice packets' is a semi passive way of communication...
s to a private number in push-to-talk or walkie-talkie
Walkie-talkie
A walkie-talkie is a hand-held, portable, two-way radio transceiver. Its development during the Second World War has been variously credited to Donald L. Hings, radio engineer Alfred J. Gross, and engineering teams at Motorola...
mode.