pulses follow at a repetition frequency

pulse repetition frequency (PRF) / pulse-repetition frequency

follow and assume / follow-and-assume

lock-follow / auto-follow

high pulse repetition frequency (HPRF)

high pulse repetition frequency radar

high-pulse repetition frequency waveform

low-pulse repetition frequency

low-pulse repetition frequency radar

low-pulse repetition frequency waveform

medium pulse repetition frequency

medium pulse repetition frequency radar

medium pulse repetition frequency waveform

PRF agility (Pulse Repetition Frequency)

pulse group repetition frequency

pulse repetition frequency discrimination

pulse-repetition frequency generator

pulse-repetition frequency ranging Doppler radar

staggered PRF (pulse repetition frequency)

electromagnetic pulses intelligence

pulses duty cycle

pulse repetition rate (PRR)

group repetition interval (GRI)

pulse repetition interval (PRI)

follow

follow through

follow-on echelon

follow-on forces

follow-on jammer

follow-on logistic support

follow-on mine countermeasures

Follow-on-Forces-Attack (FOFA)

more to follow