inter pulse modulation (IPM)

intra-pulse modulation (pulse compression / modulation on pulse, MOP)

inter-modulation distortion (IMD)

pulse-width modulation (PWM)

frequency modulation on pulse (FMOP)

phase modulation on pulse (PMOP)

pulse-duration modulation (PDM)

pulse-position modulation (PPM)

pulse width modulation (PWM)

pulse-length modulation (PLM)

pulse repetition frequency (PRF) / pulse-repetition frequency

pulse width / pulse duration

inter-agency cooperation

inter-chart relationship diagram (cart.)

inter-look dormant period (mines)

inter-theatre

Inter-Entity Boundary Line (IEBL)

inter-army flight

Inter-State Aviation Committee (IAC)

inter-tropical convergence zone (ITCZ)

single inter-operational plan (SIOP)

inter-pupillary distance (IPD)

inter integrated circuit (bus) (I2C / IIC)

amplitude modulation

frequency modulation (FM)

modulation

air modulation

amplitude-modulation receiver

frequency-modulation receiver

modulation index

phase-modulation receiver

angle modulation noise

coherent echo modulation and detection