DUAL-BAND ACTIVE RADAR HOMING HEAD Russian patent published in 2020 - IPC F41G7/22 

FIELD: physics.

SUBSTANCE: invention relates to radar systems which enable accurate, all-weather homing on a target in radar countermeasures. Implementation of invention consists in fact that in dual-range active radar homing head containing transceiving antenna, located inside radiotransparent fairing, frequency synthesizer, power amplifier, software module for signal processing, additionally introduced program module of working frequencies selection, radiotransparent fairing and transceiving antenna are made double-range, combined opening of double-band antenna array of emitters of slit and/or vibratory type of upper and lower bands is divided into four quadrants, output of each quadrant through circulator/switch of receiving-transmission of corresponding range is connected to inputs of four-channel receivers and four-channel power amplifiers of corresponding ranges, outputs of four-channel receivers are connected to inputs of program modules of signal processing, outputs of synthesizer are connected to inputs of power amplifiers and heterodyne inputs of receivers, and inputs of synthesizers of corresponding ranges are connected to high-frequency output of program module of working frequencies selection. To simplify the design due to integration of separate units and reduction of manufacturing cost in the homing head in the second embodiment of the frequency synthesizer of upper range is made in form of a frequency multiplier, which input is connected to output of frequency synthesizer of lower range, and output is to input of four-channel power amplifier of upper range and to heterodyne input of four-channel microwave receiver of upper range, wherein coefficient of frequency multiplying is selected by integer n ≥ 2, and wall thickness of radiotransparent fairing is selected multiple of half the average wavelength of lower range.

EFFECT: technical result consists in increase in guidance accuracy and resolution on range and speed of targets, high stealth, noise immunity and reliability of operation in any weather conditions.

2 cl, 2 dwg