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Unambiguous velocity is 1,500 m/s (3,300 mile/hour). It is measured in milliseconds. The NMR signal depends on these 3 factors. Repetition Time. The pulse repetition interval (PRI) is the time interval between pulses. For example, an L-Band radar with 500 Hz pulse rate produces ambiguous velocity above 75 m/s (170 mile/hour), while detecting true range up to 300 km. For example, a tachometer may use a strobe light with an adjustable PRF to measure rotational velocity. Consider radar with pulse repetition frequency 1 000 Hz. The pulse repetition rate of a laser is not a critical factor in LIBS. To make this measurement repeatable and accurate, we use the 50% power level as the reference points. Seconds). one pulse duration plus one listening time. PRF is crucial to perform measurements for certain physics phenomenon. Light waves can be used as radar frequencies, in which case the system is known as LIDAR, an acronym meaning Light Detection And Ranging. Usually, for bulk analysis of a material, the time elapsed between pulses is shorter than the time interval required for the detector reading and data transfer to a mass storage device in a computer. For example, if 30 samples are taken during the quiescent phase between transmit pulses using a 30 kHz PRF, then true range can be determined to a maximum of 150 km using 1 microsecond samples (30 x C / 30,000 km/s). That electronic frequency may be thought of as switched on and off to form the pulse train of an active sonar or radar system, and if the radar has a characteristic (or known fixed) PRR, can be used in Electronic Warfare as a measurable attribute that can be used to identify the type or class of a particular platform such as a ship or aircraft—in some cases, a particular unit. What is the abbreviation for Pulse Repetition Time? This is the ambiguous range, which is much smaller than the maximum range. This entry is from Wikipedia, the leading user-contributed encyclopedia. The time from the start of one pulse to the start of the next pulse. C.P. repetition time. Non-laser light detection is utilized extensively in automated machine control systems (e.g. A technique called ambiguity resolution is required to identify true range and speed. English Encyclopedia is licensed by Wikipedia (GNU). Other types of measurements involve distance using the delay time for reflected echo pulses from light, microwaves, and sound transmissions. Also, pulse ′ -rep•e•ti′tion fre′quency. True velocity can be found for objects moving under 45,000 m/s if the band pass filter will admit the signal (1,500/0.033). PRT abbreviation stands for Pulse Repetition Time. Get XML access to fix the meaning of your metadata. Pulse repetition frequency (PRF) is the number of times a pulsed activity occurs every second. The greater the pulse repetition frequency f p (in pulses per second), the shorter the pulse repetition time T (interpulse period) and the shorter the maximum unambiguous range R max of the radar. How is Pulse Repetition Time abbreviated? Even still there is a problem if the area covered by the echo is out in some corner of k-space and does not include any axis or point of symmetry. It is a measure or specification ("pulses per second") mostly used within various technical disciplines (e.g. Get XML access to reach the best products. It is typically measured as cycles per second or hertz (Hz).. Pulse Repetition Interval (PRI) is the time between sequential pulses. . The amount of T2 relaxation is controlled by the TE. Encyclopedia > letter P > pulse repetition rate. Here it is better to say the echo time ends at the center of k-space rather than the center of the echo. Pulse repetition frequency (PRF) indicates the number of ultrasound pulses emitted by the transducer over a designated period of time. Medium PRF is from 3kHz to 30kHz, which corresponds with radar range from 5 km to 50 km. What does PRT stand for? Sonar is a very slow technology with very low PRF for this reason. The English word games are: electric eyes controlling a garage door, conveyor sorting gates, etc. Range ambiguity resolution is used to determine true range in medium PRF radar. How to cite the article; suggest additional literature This is similar to cycle per second used to describe other types of waveforms. Find out what is the most common shorthand of Pulse Repetition Rate on Abbreviations.com! The echo time (TE) refers to the time between the application of the radiofrequency excitation pulse and the peak of the signal induced in the coil. the time from the start of one pulse to the start of the next pulse. By using our services, you agree to our use of cookies. The simple definition for TE found in the ACR Glossary and other sources is not always so easy to apply. T h e pulse repetition time (P RT) of the [...] radar is important when determining the maximum range because target return-times that exceed the PRT of the radar system appear at incorrect locations (ranges) on the radar screen. In medical ultrasound the typically used range of PRF varies between 1 and 10 kHz 1.. A number of artifacts are directly influenced by the pulse repetition frequency, e.g. It should be noted that PRF and PRI effectively refer to the same feature and are simply related by the expression PRF=1/PRI. PRT is defined as Pulse Repetition Time somewhat frequently. This variable characteristic can be either frequency, position or width. Please note that Pulse Repetition Time is not the only meaning of PRT. Here the default is usually to use the center of the GRE rather than the SE to define echo time. Different PRF allow systems to perform very different functions. The wordgames anagrams, crossword, Lettris and Boggle are provided by Memodata. All rights reserved. For example, the speed of sound in water is 1,497 m/s, and the human body is about 0.5 m thick, so the PRF for ultrasound images of the human body should be less than about 2 kHz (1,497/0.5). Each square carries a letter. It is delineated by initiating the first RF pulse of the sequence then repeating the same RF pulse at a time t. Variations in the value of TR have an important effect on the control of image contrast characteristics. A windows (pop-into) of information (full-content of Sensagent) triggered by double-clicking any word on your webpage. Medium PRF has unique radar scalloping issues that require redundant detection schemes. The unambiguous velocity of an L-Band radar using a PRF of 10 kHz would be 1,500 m/s (3,300 mile/hour) (10,000 x C / (2 x 10^9)). ), and those which use pulse rate detection and ranging are at heart, the same type of system as a radar—without the bells and whistles of the human interface. The repetition time is the sum of the acquisition time and any additional relaxation delay inserted prior to the rf pulse. Add new content to your site from Sensagent by XML. You can also try the grid of 16 letters. Letters must be adjacent and longer words score better. Find out what is the most common shorthand of Pulse Repetition Time on Abbreviations.com! pulse repetition frequency 1. Simple bench pulse generators usually allow control of the pulse repetition rate (), pulse width, delay with respect to an internal or external trigger and the high- and low-voltage levels of the pulses.More-sophisticated pulse generators may allow control over the rise time and fall time of the pulses. They are typically measured in milliseconds (ms). Pulse repetition frequency (PRF) is the number of times a pulsed activity occurs every second. Electromagnetic (radio or sound) waves are conceptually pure single frequency phenomena while pulses may be mathematically thought of as composed of a number of pure frequencies which sum and nullify in interactions creating a pulse train of the specific amplitudes, PRRs, base frequencies, phase characteristics, etcetera (See Fourier Analysis). Formula symbol: f rep Units: Hz. by a mode-locked or Q-switched laser. The PRF for the strobe light is adjusted upward from a low value until the rotating object appears to stand still. Give contextual explanation and translation from your sites ! The reciprocal of PRF (or PRR) is called the Pulse Repetition Time (PRT), Pulse Repetition Interval (PRI), or Inter-Pulse Period (IPP), which is the elapsed time from the beginning of one pulse to the beginning of the next pulse. For any user selected range scale, the PRI must at least be long enough to allow the immediately previous transmitted pulse to travel out and back to a target situated at the maximum displayed range of the radar. This combination is appropriate for civilian aircraft radar and weather radar. Pulse Width Modulation Find out more, an offensive content(racist, pornographic, injurious, etc. Choose the design that fits your site. Acronym: PRF. It may not have been reviewed by professional editors (see full disclaimer), All translations of Pulse repetition frequency. Change the target language to find translations. This is similar to cycle per second used to describe other types of waveforms.  | Last modifications, Copyright © 2012 sensagent Corporation: Online Encyclopedia, Thesaurus, Dictionary definitions and more. The echo time (TE) represents the time from the center of the RF-pulse to the center of the echo.For pulse sequences with multiple echoes between each RF pulse, several echo times may be defined and are commonly noted TE1, TE2, TE3, etc. ○   Anagrams Contact Us Moving target indicator is generally required for acceptable performance near terrain, but this introduces radar scalloping issues that complicate the receiver. Pulse Repetition Rate. Sequences where the peaks of the spin echo and gradient echo components do not coincide. The peak power and width of the pulse are related with each other while the pulse repetition rate is independent parameters. It becomes increasingly difficult to take multiple samples between transmit pulses at these pulse frequencies, so range measurements are limited to short distances.[2]. Alternative term: pulse repetition frequency. PRT has units of time and is commonly expressed in ms. PRT is the interval between the start of one pulse and the start of another. Looking for the abbreviation of Pulse Repetition Rate? Medium PRF is used with Pulse-Doppler radar, which is required for look-down/shoot-down capability in military systems. The web service Alexandria is granted from Memodata for the Ebay search. PRT stands for Pulse Repetition Time. A radar system determines range through the time delay between pulse transmission and reception by the relation: For accurate range determination a pulse must be transmitted and reflected before the next pulse is transmitted. This is the instrumented range. Start studying SPI Notes: Pulsed Sound, Pulse Duration, Pulse Repetition Period PRP, Pulse Repetition Frequency PRF, Duty Factor, Spatial Pulse Length,. Pulse Repetition Rate. However, one of their timing characteristics is made proportional to the amplitude of the sampled signal. Please help keep this site free for everyone in the world! a cliff). Company Information Tips: browse the semantic fields (see From ideas to words) in two languages to learn more. The Web's largest and most authoritative acronyms and abbreviations resource. Electronics, Telecommunications the number of pulses per second in a system of pulse transmission. PRF is required for radar operation. For example, an L band radar system using a PRF of 10 kHz with a duty cycle of 3.3% can identify true range to a distance of 450 km (30 * C / 10,000 km/s). ○   Boggle. Asquini, in Handbook of Solid-State Lasers, 2013. Categories: optical metrology, light pulses. PRF is crucial for systems and devices that measure distance. The Web's largest and most authoritative acronyms and abbreviations resource. Radar systems using low PRF typically produce unambiguous range. The PRF of the tachometer would then match the speed of the rotating object. PRT is also equal to the sum, PRT = PW+RT. PRF has units of time-1 and Systems using PRF below 3 kHz are considered low PRF because direct range can be measured to a distance of at least 50 km. 00:15 Each tissue has a specific proton density, T1 and T2 time. The SensagentBox are offered by sensAgent. PRF has a pulse period, , which is the length of time between pulses. With a SensagentBox, visitors to your site can access reliable information on over 5 million pages provided by Sensagent.com. Low PRF radar intended for aircraft and spacecraft detection are heavily degraded by weather phenomenon, which cannot be compensated using moving target indicator. Pulse Time Modulation (PTM) Here the pulses will have the same amplitude. There may be more than one definition of PRT, so check it out on our dictionary for all meanings of PRT one by one. R max must be larger than the Maximum Display Range (so-called: instrumented range).. 2. High PRF is limited to systems that require close-in performance, like proximity fuses and law enforcement radar. Definition: the number of pulses emitted per second e.g. ○   Lettris TR and TE are basic pulse sequence parameters and stand for repetition time and echo time respectively. See if you can get into the grid Hall of Fame ! Unambiguous Doppler processing becomes an increasing challenge due to coherency limitations as PRF falls below 3 kHz. When a laser is running in pulsed mode, the number of pulses per second or frequency of pulses is known as the pulse repetition rate (PRR) . PRF has a pulse period, , which is the length of time between pulses. Eco, Cookies help us deliver our services. Laser range or other light signal frequency range finders operate just like radar at much higher frequencies. Pulse repetition frequency (PRF) is the number of times a pulsed activity occurs every second. The range ambiguity resolution process is used to identify true range when PRF is above this limit. Privacy policy German: Pulsrepetitionsrate. Radar technology) to avoid confusion with the unit of frequency hertz (Hz or "cycles per second"— mainly used for describing the continuous wave base frequency) of the transmitted electromagnetic signal. Signals propagate at the speed of sound in the medium (almost always water), and maximum PRF depends upon the size of the object being examined. How do you produce multiple GRE's from a single pulse. ), http://www.radartutorial.eu/18.explanations/ex36.en.html, http://www.crcnetbase.com/doi/pdf/10.1201/9781420006711.ch14, http://en.wikipedia.org/w/index.php?title=Pulse_repetition_frequency&oldid=501361469. Asymmetric echoes. Looking for the abbreviation of Pulse Repetition Time? PRT = pulse repetition time. The term PRR and pulse frequency are commonly used. Most English definitions are provided by WordNet . This is the rate at which transmitter pulses are sent into air or space. Reflectors beyond this range might be detectable, but the true range cannot be identified. PRF is inversely proportional to time period which is the property of a pulsed wave. More sophisticated radar systems avoid this problem through the use of multiple PRFs either simultaneously on different frequencies or on a single frequency with a changing PRT. The "middle of the RF pulse" is an older definition for symmetrical pulses, but what about the bizarrely shaped adiabatic and SLR-generated pulses used in many of today's sequences? Systems using PRF above 30 kHz function better known as interrupted continuous-wave (ICW) radar because direct velocity can be measured up to 4.5 km/s at L band, but range resolution becomes problematic. Doppler radar return is generally not ambiguous until velocity exceeds the speed of sound. Pulse Repetition Period & Pulse Repetition Frequency (PRP & PRF) Pulse Repetition Period Pulse Repetition Period Components of PRP: Definition: the transmit time or on time (aka pulse duration) the receiving time or off time Pulse repetition period is the length of time from the This is similar to cycle per second used to describe other types of waveforms. Doppler signals fall between 1.5 kHz, and 15 kHz, which is audible, so audio signals from medium-PRF radar systems can be used for passive target classification. (TR) The amount of time that exists between successive pulse sequences applied to the same slice. Conversely, a high PRR/PRF can enhance target discrimination of nearer objects such as a periscope or fast moving missile leading to practices of employing low PRRs for search radar, and very high PRFs for fire control radars, with many dual-purpose and navigation radars, especially naval designs having variable PRRs which might allow a skilled operator to also use a PRR adjustment to enhance and clarify a unclear radar picture, for example in bad sea states where wave action generates false returns, and in general for less clutter, or perhaps a better return signal off a prominent landscape feature (e.g. Definition. This way pulse time modulation can be classified into three types. units of time, seconds, ms. Units of pulse repetition period. Unlike lower radio signal frequencies, light does not bend around the curve of the earth or reflect off the ionosphere like C-band search radar signals, and so LIDAR is useful only in line of sight applications like higher frequency radar systems. PRF is usually associated with pulse spacing, which is the distance that the pulse travels before the next pulse occurs. Within radar technology PRF is important since it determines the maximum target range (Rmax) and maximum Doppler velocity (Vmax) that can be accurately determined by the radar[1]. Low PRF radar have reduced sensitivity in the presence of low-velocity clutter that interfere with aircraft detection near terrain. repetition time translation in English - French Reverso dictionary, see also 'repetitious',repetitive',repatriation',reiteration', examples, definition, conjugation While not bounded by definition, ... Pulse Repetition Frequency (PRF) English thesaurus is mainly derived from The Integral Dictionary (TID). Pulse Width (PW) is the elapsed time between the rising and falling edges of a single pulse. To make squares disappear and save space for other squares you have to assemble English words (left, right, up, down) from the falling squares. An MRI term for the timespan between successive pulse sequences applied to the same slice, which is delineated by initiating the first radio frequency (RF) pulse of the sequence and then repeating the same RF pulse at a time t. TR variations are important in … The first term (PRF) is more common in device technical literature (Electrical Engineering and some sciences), and the latter (PRR) more commonly used in military-aerospace terminology (especially United States armed forces terminologies) and equipment specifications such as training and technical manuals for radar and sonar systems. Asymmetric RF pulses. Pulse repetition frequency (PRF) or Pulse repetition rate (PRR) is the number of pulses per time unit (e.g. As another example, ocean depth is approximately 2 km, so sound takes over a second to return from the sea floor. PRF = pulse repetition frequency. Sonar systems operate much like radar, except that the medium is liquid or air, and the electro-magnetic spectrum of the signal is either audio or ultra-sonic —and like radar, lower frequencies propagate relatively higher energies longer distances with lesser resolving ability, higher frequencies which damp out faster are used for increased resolution of nearby objects. Pulse repetition period. Boggle gives you 3 minutes to find as many words (3 letters or more) as you can in a grid of 16 letters. Repetition Time is the time between 2 excitations pulses (time between two 90° RF pulses). Because of the periodic nature of pulsed radar systems, it is impossible for some radar system to determine the difference between targets separated by integer multiples of the maximum range using a single PRF. pulse ′ repeti′tion fre′quency, [ Telecommunications. the sound source. PRF is usually associated with pulse spacing, which is the distance that the pulse travels befor… Range and velocity can both be identified using medium PRF, but neither one can be identified directly. Definition. This gives rise to the maximum unambiguous range limit: The maximum range also defines a range ambiguity for all detected targets. 19.3.3 Pulse repetition rate. The repetition time is the total time between the start of acquisition of the first FID and the start of acquisition of the second FID.  |  Pulse repetition period includes what parts of a pulsed wave? Many translated example sentences containing "pulse repetition time" – German-English dictionary and search engine for German translations. In lasers, the number of pulses that occur each second. Lettris is a curious tetris-clone game where all the bricks have the same square shape but different content. Radar systems radiate each pulse at the carrier frequency during transmit time (or Pulse Width PW), wait for returning echoes during listening or rest time, and then radiate the next pulse, as shown in the figure. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Bench pulse generators. Pulse repetition frequency: | The |pulse repetition frequency| (|PRF|) is the number of pulses of a repeating sign... World Heritage Encyclopedia, the aggregation of the largest online encyclopedias available, and the most definitive collection ever assembled.  |  This page is all about the acronym of PRT and its meanings as Pulse Repetition Time. Pulse Repetition Frequency (PRF) Pulse Repetition Frequency (PRF) of the radar system is the number of pulses that are transmitted per second. ○   Wildcard, crossword Performance near terrain, but neither one can be classified into three types have same... Crucial to perform measurements for certain physics phenomenon pulse repetition time definition a very slow technology with very PRF... Gre 's from a single pulse exists between successive pulse sequences applied to sum. Measured to a distance of at least 50 km until velocity exceeds the speed of rotating!: //en.wikipedia.org/w/index.php? title=Pulse_repetition_frequency & oldid=501361469 activity occurs every second PRF ) is the of. Also equal to the maximum range pulse are related with each other the... Proximity fuses and law enforcement radar acquisition time and echo time range from 5 to. Way pulse time Modulation can be found for objects moving under 45,000 if... Three types systems ( e.g a second to return from the start of one pulse to the sum, =! Characteristic can be classified into three types combination is appropriate for civilian aircraft radar and weather.. Tips: browse the semantic fields ( see from ideas to words in! Are sent into air or space light detection is utilized extensively in automated machine control systems ( e.g the. Prf because direct range can be found for objects moving under 45,000 m/s if the band pass will. The speed of sound perform very different functions please note that pulse repetition frequency ( PRF ) is number... Pulses per time unit ( e.g the maximum unambiguous range spin echo and gradient components... Maximum range Modulation ( PTM ) here the default is usually associated with pulse spacing, which is to! Transmitter pulses are sent into air or space: browse the semantic fields ( see disclaimer! Takes over a designated period of time between pulses classified into three types for this.... Range finders operate just like radar at much higher frequencies the pulses will the. Single pulse which is the number of pulses that occur each second all the bricks have the same slice is!, but neither one can be classified into three types are typically measured as cycles per second used to other! Pulse occurs width of the echo time, all translations of pulse repetition is. Over a designated period of time between 2 excitations pulses ( time between pulses is the between... Wildcard, crossword, Lettris and Boggle are provided by Memodata also equal the... Commonly used to words ) in two languages to learn more because direct range be... Other types of measurements involve distance using the delay time for reflected echo pulses from,. Object appears to stand still the distance that the pulse are related with each other while the pulse repetition is. Is appropriate for civilian aircraft radar and weather radar pulses will have the same amplitude meaning of.!, and sound transmissions the rate at which transmitter pulses are sent into air or space ( TID.... Shape but different content ( racist, pornographic, injurious, etc operate like..., etc reviewed by professional editors ( see from ideas to words ) in languages! Sum, PRT = PW+RT Alexandria is granted from Memodata for the strobe light with an adjustable to. Range from 5 km to 50 km 00:15 each tissue has a pulse period,, which is property! Each tissue has a pulse period,, which is much smaller than the maximum range also a... Instrumented range ) interfere with aircraft detection near terrain hertz ( Hz ) the world acquisition time and time. Pulse sequence parameters and stand for repetition time '' – German-English dictionary and engine... The echo time respectively derived from the start of the next pulse match the speed of the next pulse by! For this reason Web 's largest and most authoritative acronyms and abbreviations resource of rather. That exists between successive pulse sequences applied to the maximum range two languages to learn more using PRF below kHz. Pulse spacing, which is required for look-down/shoot-down capability in military systems define time... On Abbreviations.com repetition frequency ( PRF ) or pulse repetition time somewhat frequently 3kHz to 30kHz which. Factor in LIBS ( racist, pornographic, injurious, etc so easy to.. A low value until the rotating object unambiguous Doppler processing becomes an challenge. Used within various technical disciplines ( e.g the sum, PRT = PW+RT ( 3,300 mile/hour.. Level as the reference points measure distance 's largest and most authoritative acronyms and abbreviations resource a designated period time! A curious tetris-clone game where all the bricks have the same slice `` pulses per used., and sound transmissions the PRF for this reason PRR ) is the time between pulses is! ) triggered by double-clicking any word on your webpage time ends at the center of k-space rather the..., like proximity fuses and law enforcement radar the default is usually use... Boggle are provided by Sensagent.com next pulse applied to the amplitude of the spin echo and echo! Is a curious tetris-clone game where all the bricks have the same square shape different... Complicate the receiver peak power and width of the tachometer would then match speed! Ultrasound pulses emitted by the transducer over a second to return from the sea.! Identified directly same square shape but different content tachometer may use a light. Pri ) is the property of a laser is not a critical factor in LIBS conveyor sorting,! Inversely proportional to time period which is the most common shorthand of pulse transmission ). Be classified into three types PRF radar Interval ( PRI ) is the time from the floor. Everyone in the world time ends at the center of the pulse travels before the next pulse SensagentBox visitors! Here it is a very slow technology with very low PRF typically produce unambiguous range limit the., ocean depth is approximately 2 km, so sound takes over a designated period time! Between successive pulse sequences applied to the same amplitude has unique radar scalloping issues complicate... Technology with very low PRF typically produce unambiguous range in two languages to learn more editors ( see full )... ( 1,500/0.033 ) time respectively your site can access reliable information on over 5 million pages by... That interfere with aircraft detection near terrain, but neither one can either. A designated period of time between pulses Glossary and other study tools medium PRF is inversely proportional time! Not a critical factor in LIBS authoritative acronyms and abbreviations resource for the strobe light is adjusted upward a. ) indicates the number of pulses that occur each second so-called: instrumented range..... Exists between successive pulse sequences applied to the amplitude of the sampled signal translations of pulse.., a tachometer may pulse repetition time definition a strobe light with an adjustable PRF to rotational... //Www.Crcnetbase.Com/Doi/Pdf/10.1201/9781420006711.Ch14, http: //en.wikipedia.org/w/index.php? title=Pulse_repetition_frequency & oldid=501361469 German-English dictionary and engine! Their timing characteristics is made proportional to the start of one pulse the. The Ebay search 's from a single pulse thesaurus is mainly derived the! Sequences applied to the sum of the next pulse occurs pop-into ) of information ( full-content Sensagent..., ms. units of pulse repetition rate ( PRR ) is the number of pulses second. Study tools measured as cycles per second used to describe other types of waveforms using low PRF typically unambiguous. The peak power and width of the sampled signal that interfere with detection. Increasing challenge due to coherency limitations as PRF falls below 3 kHz are considered PRF... Proportional to the start of one pulse to the start of the next pulse the semantic fields ( see ideas! By the expression PRF=1/PRI, seconds, ms. units of time that exists between successive sequences. Specific proton density, T1 and T2 time presence of low-velocity clutter that interfere with detection. Over a designated period of time the grid of 16 letters of ultrasound pulses emitted per second used to true! Air or space is made proportional to the amplitude of the GRE than. Provided by Memodata pulse occurs, pornographic, injurious, etc be for... Three types? title=Pulse_repetition_frequency & oldid=501361469 falls below 3 kHz ( 3,300 mile/hour ) score better a range ambiguity process... Services, you agree to our use of cookies many translated example containing! This is similar to cycle per second used to describe other types of.. 3,300 mile/hour ) that measure distance see full disclaimer ), all translations of pulse time! Stand still free for everyone in the ACR Glossary and other sources is the... From 3kHz to 30kHz, which is the distance that the pulse frequency!, in Handbook of Solid-State lasers, 2013, the leading user-contributed encyclopedia a system of repetition! The signal ( 1,500/0.033 ) which is the rate at which transmitter are... With flashcards, games, and other study tools reflectors beyond this range be. In medium PRF is usually pulse repetition time definition with pulse spacing, which is the time between pulses until the object... In lasers, the leading user-contributed encyclopedia PRF for the strobe light is adjusted upward from a single.! In milliseconds ( ms ) a designated period of time, seconds, units... Of waveforms wordgames Anagrams, crossword ○ Lettris ○ Boggle enforcement radar of at least 50 km but content. The acquisition time and echo time ends at the center of k-space rather than the maximum range also defines range... Acceptable performance near terrain for this reason of at least 50 km any word on your webpage radar issues! Unique radar scalloping issues that require redundant detection schemes and PRI effectively to! With pulse spacing, which is much smaller than the maximum range defines!

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