FIELD: radio engineering, communication.
SUBSTANCE: selection apparatus comprises a quartz-crystal oscillator, a pulse modulator, a stable driving generator, a first mixer, a high frequency generator, an antenna switch, an antenna, a second mixer, a filter, a first broadband intermediate frequency amplifier, a display, as well as a digital computer, a frequency synthesiser, an antenna angular position sensor, a high frequency amplifier, third and fourth mixers, a second broadband intermediate frequency amplifier, N frequency channels, each comprising an n-th frequency filter, quadrature phase detectors and an analogue-to-digital converter. The listed components are interconnected in a certain manner.
EFFECT: high efficiency of selecting moving targets in pulse-to-pulse carrier probing frequency tuning mode.
7 dwg
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