RADAR RANGING METHOD WITH CARRIER FREQUENCY VARIATION FROM PULSE TO PULSE Russian patent published in 2020 - IPC G01S13/24 

FIELD: radar ranging.

SUBSTANCE: invention relates to the field of radar engineering and can be used in the construction of onboard pulsed incoherent radio altimeters. Method of radar ranging consists in generation of emitted signal by direct heterodyning down to intermediate frequency of input intrinsic noise of receiving device, amplification, its subsequent narrow-band filtering at intermediate frequency with a frequency-selective device to obtain quasi-harmonic noise of intermediate frequency, return heterodyne up noise from intermediate frequency to carrier, amplification, limiting amplitude from above, its amplitude-pulse manipulation, amplification to required level of emitted pulse power and subsequent radiation, wherein filtration of reflected signal, amplification and detection is carried out at intermediate frequency.

EFFECT: wider range of measured ranges, low power consumption, low level of spurious signals and noise pick-up in power and control circuits.

5 cl, 4 dwg