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Audio signal processing technique
The chirp pulse compression process transforms a long duration frequency-coded pulse into a narrow pulse of greatly increased amplitude. It is a technique
Chirp_compression
Frequency swept signal
A chirp is a signal in which the frequency increases (up-chirp) or decreases (down-chirp) with time. In some sources, the term chirp is used interchangeably
Chirp
Frequency of a chirp pulse
The spectrum of a chirp pulse describes its characteristics in terms of its frequency components. This frequency-domain representation is an alternative
Chirp_spectrum
Signal processing technique
As with a linear chirp, pulse compression is achieved through intercorrelation. Continuous-wave radar Spread spectrum Chirp compression J. R. Klauder, A
Pulse_compression
Topics referred to by the same term
increases / decreases with time Chirping, pulse compression by linear frequency modulation Trash-talk in ice hockey Chirp (disambiguation) Chirplet transform
Chirping
Technique for amplifying ultrashort laser pulses
Chirped pulse amplification (CPA) is a technique for amplifying an ultrashort laser pulse up to the petawatt level, with the laser pulse being stretched
Chirped_pulse_amplification
Topics referred to by the same term
a volumetric flow rate Linear period modulation, a technique for chirp compression Luyten Proper-Motion Catalogue Line pairs per millimetre, a unit of
LPM
American physicist (1932–2024)
Berkeley Known for Coherent states Gazeau–Klauder coherent states Chirp compression SU (1,1) Interferometry Awards Onsager Medal (2006) Scientific career
John_R._Klauder
Wireless communication technology
similar to and a derivative of chirp spread spectrum (CSS) modulation. Each symbol is represented by a cyclic shifted chirp over the bandwidth centered around
LoRa
Part of electronic warfare
pulse compression technique is boosting the apparent signal strength as perceived by the radar receiver. The outgoing radar pulses are chirped, that is
Electronic counter-countermeasure
Electronic_counter-countermeasure
Measurement of the direction from which a received signal was transmitted
respectively) and the use of Spread spectrum techniques, such as Chirp compression, by the Radar, to increase the processing gain of its receiver. On
Direction_finding
Transform in signal processing
of the time–frequency plane. Although chirp signals have been known for many years in radar, pulse compression, and the like, the first published reference
Chirplet_transform
Mobile telecommunications technology
compared to analog cellular and two-way radio systems, by using speech compression and time-division multiple access (TDMA). The iDEN project originally
IDEN
Type of laser
PMID 19773831. Strickland, Donna; Mourou, Gerard (1985-10-15). "Compression of amplified chirped optical pulses". Optics Communications. 55 (6): 447–449. Bibcode:1985OptCo
Titanium-sapphire_laser
Type of wireless telecommunication network
Wireless Mbus. Chirp spread spectrum (CSS) based devices. Sigfox, UNB-based technology and French company. LoRa is a proprietary, chirp spread spectrum
Low-power_wide-area_network
Component of x-ray laser
electrons at the trailing end of the bunch. This is called negative energy chirp, meaning the energy decreases along the direction of beam travel. Because
Magnetic_chicane
Type of wireless telecommunication network
Sigfox, UNB-based technology and French company. LoRa is a proprietary, chirp spread spectrum radio modulation technology for LPWAN used by LoRaWAN, Haystack
Decentralized physical infrastructure network
Decentralized_physical_infrastructure_network
Canadian physicist, engineer, and Nobel laureate
work "Compression of amplified chirped optical pulses" in 1985, while Strickland was still a doctoral student under Mourou. Their invention of chirped pulse
Donna_Strickland
1991 (1991-11-08) Nobita and Doraemon create a picture and sound recording of insects chirping for Shizuka. Then, Suneo blackmails Nobita for the same. Gian's singing
List of Doraemon (1979 TV series) episodes (1987–2005)
List_of_Doraemon_(1979_TV_series)_episodes_(1987–2005)
Atomic imaging tool
radio-frequency (RF) gap. By continuing to use spatial compression in conjunction with the electron bunch chirp allowed the gun to be able to resolve in a 200-fs
Ultrabright_electron
Infrared laser
https://www.rp-photonics.com/chirped_pulse_amplification.html D. Strickland and G. Mourou, "Compression of amplified chirped optical pulses", Opt. Commun
Vulcan_laser
Optical device for shortening laser pulses
compressor is an optical device used to shorten the duration of a positively chirped ultrashort laser pulse by giving different wavelength components a different
Prism_compressor
Sequence of digital values used for synchronisation
resembles a discrete version of a continuous chirp, another low-autocorrelation signal used in other pulse compression radars. The positive and negative amplitudes
Barker_code
Function of propagation delay and Doppler frequency
receiver matched filter (commonly, but not exclusively, used in pulse compression radar) of the return from a moving target. The ambiguity function is
Ambiguity_function
Sound made by a telephone to indicate an incoming call or text message
current line voltage. Electronic telephones could produce a warbling, chirping, or other sounds. Variations of the cadence or tone of the ring signal
Ringtone
South Korean plasma physicist (born 1957)
Kyung Taec; Park, Juyun; Lee, Jae-hwan; Nam, Chang Hee (2010). "Attosecond chirp compensation over broadband high-order harmonics to generate near transform-limited
Nam_Chang-hee
more intense than could have been produced by direct laser amplification. Chirp pulsed amplification rapidly became a transformative contribution for research
History_of_nuclear_fusion
Computer network that connects devices across a large distance and area
Wireless Mbus. Chirp spread spectrum (CSS) based devices. Sigfox, UNB-based technology and French company. LoRa is a proprietary, chirp spread spectrum
Wide_area_network
Electricity generation by nuclear fusion
crystals that transformed infrared laser beams into ultraviolet beams and "chirping", which changed a single wavelength into a full spectrum that could be
Fusion_power
Method of measuring ultrashort laser pulses
pulse as short as possible. For instance, the pulse could be linearly chirped or present higher order group delay dispersion (GDD) so that its duration
Multiphoton intrapulse interference phase scan
Multiphoton_intrapulse_interference_phase_scan
structure. In this structure, a linear up-chirp DDS delays higher-frequency components, while a down-chirp DDS delays lower-frequency components. This
Microwave analog signal processing
Microwave_analog_signal_processing
Upper bound to the mass of cold, nonrotating neutron stars
emission (EE) in gravitational radiation during GRB170817A: a descending chirp with characteristic time-scale τs = 3.01±0.2 s in a (H1,L1)-spectrogram
Tolman–Oppenheimer–Volkoff limit
Tolman–Oppenheimer–Volkoff_limit
Species of bird
file? See media help. Purple martins are quite vocal. They are known to chirp, chortle, rattle, and croak. Their various calls are described as "throaty
Purple_martin
Experiment undertaken on the Apollo 17 mission
capability was also affected by: the range sidelobes of the compressed chirp: they can mask weak subsurface echoes if not properly controlled. ALSE was
ALSE
Form of radar used to create images of landscapes
But in a chirped radar, this longer pulse also has a frequency shift during the pulse (hence the chirp or frequency shift). When the "chirped" signal is
Synthetic-aperture_radar
Nonlinear optical effect of light-matter interaction
pulse (between t = ±τ/2), there is an approximately linear frequency shift (chirp) given by: ω ( t ) = ω 0 + α ⋅ t {\displaystyle \omega (t)=\omega _{0}+\alpha
Self-phase_modulation
Fellowship Katie Bouman (BS Electrical Engineering 2011), developer of CHIRP, an algorithm used in filtering the first images of a black hole taken by
List of University of Michigan alumni
List_of_University_of_Michigan_alumni
French research computer network
developers installed a speaker at each computer, so that "it went 'chirp chirp chirp' like cicadas" when a packet passed a computer. An end-to-end protocol
CYCLADES
paramount in applications where the optical pulsewidth is critical, such as chirped pulse amplification and fiber-optic communications. Typically, devices
Chromo-modal_dispersion
Hypothetical black hole formed soon after the Big Bang
gravitational collapse, creating primordial black holes without the supernova compression typically needed to make black holes today. Because the creation of primordial
Primordial_black_hole
Small family car (1970-1981)
featuring a cartoonish (cricket) mascot, using a The Little Car That Can, Chirp, Chirp tagline — recalling the light-hearted marketing of small cars common
Hillman_Avenger
Potential for two waves to interfere
slightly different frequencies. A proper figure would be a combination of a chirp wave and its delayed copy to match the figure and the current figure description
Coherence_(physics)
High-power laser
a promising new technique of ICF known as "fast ignition", where the compression phase of target implosion is decoupled from the heating phase. GEKKO
GEKKO_XII
Hypothetical invisible cosmic material
2025). "GCN Circular 42650". General Coordinates Network. NASA. The source chirp mass falls with highest probability in the bin (0.1, 0.87) solar masses
Dark_matter
Object detection system using radio waves
which makes use of the change of frequency of returns from moving targets ("chirp"). Pulse-Doppler signal processing includes frequency filtering in the detection
Radar
Process of varying one or more properties of a periodic waveform
modulation Spread spectrum techniques Direct-sequence spread spectrum (DSSS) Chirp spread spectrum (CSS) according to IEEE 802.15.4a CSS uses pseudo-stochastic
Signal_modulation
previously understood. Chirped pulse amplification Donna Strickland received the 2018 Nobel Prize in Physics for the discovery of chirped pulse amplification
List of inventions and discoveries by women
List_of_inventions_and_discoveries_by_women
Range of frequencies that can be heard by humans or other animals
echolocation, just as bats do. These birds live in caves and use their rapid chirps and clicks to navigate through dark caves where even sensitive vision may
Hearing_range
accelerating phase of the main linac was chosen such that a specific energy chirp was introduced along the bunch so that it could be later compressed longitudinally
ALICE_(accelerator)
Peak divided by the Root mean square (RMS) of the waveform
(which corresponds to 12–18 dB of headroom, usually involving audio level compression), and 8–10 for an unprocessed recording (18–20 dB). Physiology — for
Crest_factor
Electronic method of transmitting information with a carrier wave
eight-fold improvement in the signal-to-noise ratio. (Compare this with chirp spread spectrum, which uses extremely wide frequency deviations to achieve
Frequency_modulation
Infrared laser
during implosion. When experiments with targets started in Shiva in 1978, compression was ramped upward to about 50 to 100 times the original density of the
Shiva_laser
Planned ICF powered by lasers
amplifiers to work well. To solve this problem HiPER uses a technique known as chirped pulse amplification (CPA). CPA starts with a short pulse from a wide-bandwidth
HiPER
System with capability to digitize very high bandwidth signals
a chirped pulse as its frequency is changing with time, and it is typically a few nanoseconds long. The analog signal is modulated onto this chirped pulse
Time-stretch analog-to-digital converter
Time-stretch_analog-to-digital_converter
Spreading the frequency domain of a signal
direct-sequence spread spectrum (DSSS), time-hopping spread spectrum (THSS), chirp spread spectrum (CSS), and combinations of these techniques are forms of
Spread_spectrum
Research and scientific development company
fundamental contributions to filtering and signal processing leading to chirp radar. 1982 John Wilder Tukey For his contributions to the spectral analysis
Bell_Labs
University of Rochester research center in Brighton, New York
laser at each wavelength and then reconstitutes the beam into one color. Chirp-pulsed amplification became instrumental in building the National Ignition
Laboratory for Laser Energetics
Laboratory_for_Laser_Energetics
Cascade of electronic components
high, will result in the loss of dynamic range. Consider, as an example, a chirp signal with time-bandwidth product of 200 and of amplitude of 1/2 LSB
RF_chain
Spectroscopic technique
(2010). "Nanoscale chemical mapping using three-dimensional adiabatic compression of surface plasmon polaritons". Nature Nanotechnology. 5 (1): 67–72.
Raman_spectroscopy
Type of light that can be emitted by an optical amplifier
laser system, the ASE limits the temporal intensity contrast. After the compression of the laser pulse, which is temporally stretched during the amplification
Amplified spontaneous emission
Amplified_spontaneous_emission
Common configuration for optical interferometry
531, issue 7592, page 40, 3 March 2016 The New York Times, "With Faint Chirp, Scientists Prove Einstein Correct", Dennis Overbye, February 12, 2016,
Michelson_interferometer
Award presented by the Institute of Electrical and Electronics Engineers
fundamental contributions to filtering and signal processing leading to chirp radar" 1982 John Tukey — "For his contributions to the spectral analysis
IEEE_Medal_of_Honor
Study of physics on quintillionth-second timescales
broadband solid-state titanium-doped sapphire based (Ti:Sa) lasers (1986), chirped pulse amplification (CPA) (1988), spectral broadening of high-energy pulses
Attosecond_physics
Adages and sayings named after a person
an empirical relationship between temperature and the rate of cricket chirping. Dollo's law: "An organism is unable to return, even partially, to a previous
List of laws named after people
List_of_laws_named_after_people
Type of radar where a known stable frequency continuous wave radio energy is transmitted
down as follows: Sine wave, like air raid siren Sawtooth wave, like the chirp from a bird Triangle wave, like police siren in the United States Square
Continuous-wave_radar
Non-linear optical process
key ingredient and as a limiting factor. For example, the technique of chirped pulse amplification was developed to overcome the nonlinearities and damage
Self-focusing
Medical condition
million people become so debilitated by the unrelenting ringing, hissing, chirping, clicking, whooshing, or screeching that they cannot carry out normal daily
Noise-induced_hearing_loss
Interactive storybook series
and sound effects, such as waves splashing, breezes blowing, and birds chirping in the case of Just Grandma and Me. Some of the sound effects were "clever"
Living_Books
Public university in Ontario, Canada
faculty. Strickland was honoured for being half of the team to discover chirped pulse amplification, a technique that underpins today's short-pulse, high-intensity
University_of_Waterloo
Way to produce very short laser bursts
Alternatively, amplified pulses of a similar duration are created through the compression of longer (e.g. 30 fs) pulses by self-phase modulation in a hollow-core
Mode_locking
role in justifying Orion’s development. Furthermore, the development of Chirped Pulse Amplification, a technique to amplify picosecond laser pulses up
Orion_(laser)
Laser pulsing technique
ISSN 0036-8075. PMID 17797635. S2CID 27074052. Treacy, E.B. (1968). "Compression of picosecond light pulses". Physics Letters A. 28 (1): 34–35. Bibcode:1968PhLA
Q-switching
Digital optical disc format
Sony), and MGM's The Terminator. The earliest releases used MPEG-2 video compression, the same method used on standard DVDs. The first releases using the
Blu-ray
Acoustic sensing method
velocity. The pulse may be at constant frequency or a chirp of changing frequency, to allow pulse compression on reception. Simple sonars generally use the former
Sonar
Spectroscopy with lasers with very short pulses
pulse during the amplification. Pulse compression (shortening of the pulse duration) is achieved by first chirping the pulse in a nonlinear material and
Ultrafast_laser_spectroscopy
Holly was also pictured on the cover of The Crickets' 1957 album The "Chirping" Crickets with a sunburst Stratocaster, inspiring The Shadows' Hank Marvin
List_of_Stratocaster_players
Transmitting information over optical fiber
modulation increases the achievable link distance by eliminating laser chirp, which broadens the linewidth in directly modulated lasers, increasing the
Fiber-optic_communication
American physicist
stretcher configuration used in the design of free-space, solid-state, chirped pulse amplifiers. The key mechanism in this achievement was the recognition
Richard_Fork
conventional monostatic algorithms (such as the Range Doppler Algorithm (RDA) and Chirp Scaling Algorithm (CSA)) can be applied. For this, the individual aperture
High Resolution Wide Swath SAR imaging
High_Resolution_Wide_Swath_SAR_imaging
American physicist
correlation between the ambient temperature and the rate at which crickets chirp. The formula expressed in that article became known as Dolbear's law. In
Amos_Dolbear
Auditory phenomenon in the brain
Intensity: usually start at 70 dBnHL Stimulus type: click (100 us long), chirp or toneburst Transducer type: insert, bone vibrator, sound field, headphones
Auditory_brainstem_response
American nuclear fusion facility
electrons that absorb a considerable amount of energy and interfere with compression. The conversion process can reach peak efficiencies of about 80 percent
National_Ignition_Facility
Channel access method used by various radio communication technologies
Direct-sequence spread spectrum (DSSS) Frequency-hopping spread spectrum (FHSS) Chirp spread spectrum (CSS) Time-hopping spread spectrum (THSS) CDMA schemes W-CDMA
Code-division_multiple_access
Kobayashi, T.; Terasaki, A. (1993-03-01). "Induced phase modulation of chirped continuum pulses studied with a femtosecond frequency-domain interferometer"
Spectral_interferometry
Signal analysis tool
valuable for identifying complicated forms of nonstationarity, such as chirps, frequency-modulated components, or slowly-varying drifts, which are difficult
Hilbert–Huang_transform
Branch of physics
the phase-matching condition. Quasi-phase-matching can be expanded to chirped gratings to get more bandwidth and to shape an SHG pulse like it is done
Nonlinear_optics
Expansion card that provides input and output of audio signals
unconventional instrument patches, producing background sound effects (e.g., chirping birds, clopping horse hooves, etc.) before the Sound Blaster brought digital
Sound_card
Characteristic impedance – Charge-coupled device – Chemical vapor deposition – Chirp – Chroma subsampling – Circuit breaker – Circuit noise level – Circuit reliability
Index_of_electronics_articles
Medical imaging technique
contrast agent unlike MRI. Patient discomfort is minimized. No breast compression is required. It is easy and inexpensive to operate. Radiologist requires
Computed tomography laser mammography
Computed_tomography_laser_mammography
Audio device to detect the presence of bat sound signals
recorded to the memory and may be considered as a simple form of lossy data compression.[citation needed] Historically, to achieve long recording times, such
Bat_detector
Manipulation of very small objects with sound waves
cytometer for high-throughput single cell analysis. The tunability offered by chirped[clarification needed] interdigital transducers renders it capable of precisely
Acoustic_tweezers
proceed (26—13 Ma), the Northern Tibet continental block experienced compression, thrusting and shortening as well. This interpretation is supported by
Paleogeography of the India–Asia collision system
Paleogeography_of_the_India–Asia_collision_system
Technique of measuring electromagnetic spectra
commonly performed using diamond anvil cells (DACs), which enable static compression of samples while remaining sufficiently transparent for terahertz propagation
Terahertz time-domain spectroscopy
Terahertz_time-domain_spectroscopy
Concept in optics
the front of the pulse and the blue at the rear. They reported very small chirps across the continuum. These observations and others led them to state that
Supercontinuum
Brazilian physicist (born 1956)
G. R., BRITO CRUZ, C. H. and SCARPARO, M. 1986 . Positive and negative chirping of laser pulses shorter than 100 fsec. in a saturable absorber. Optics
Carlos_Henrique_de_Brito_Cruz
Sound frequency changes responsible for perceptions of loudness, pitch and timbre
percept corresponding to the modulation rate. Rainstorms, crackling fire, chirping crickets or galloping horses produce "sound textures" - the collective
Temporal envelope and fine structure
Temporal_envelope_and_fine_structure
Surface engineering process
for the coupled predictive assessment of plasma expansion and material compression in laser shock processing applications". In Phipps, Claude R; Niino,
Laser_peening
Device that amplifies an optical signal
power laser systems. Special types such as regenerative amplifiers and chirped-pulse amplifiers are used to amplify ultrashort pulses. Solid-state amplifiers
Optical_amplifier
Chiral symmetry breaking Chirality (electromagnetism) Chirality (physics) Chirped pulse amplification Chladni's law Chlorine-37 Choke (electronics) Choked
Index_of_physics_articles_(C)
Subdiscipline of measurement and signature intelligence
the air traffic control illuminator, the receiver used pulse compression filtering of a chirp signal, which provided processing gain along with the ability
Radar_MASINT
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CHIRP COMPRESSION
CHIRP COMPRESSION
CHIRP COMPRESSION
CHIRP COMPRESSION
CHIRP COMPRESSION
CHIRP COMPRESSION
CHIRP COMPRESSION
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CHIRP COMPRESSION
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