| 摘要 |
FIELD: radiolocation, as transmitter in emergency alarm systems. SUBSTANCE: given Doppler radio wave detector for emergency alarm has transceiver unit with Doppler mixer, amplifier, rejection filter, low-frequency amplifier, limiter, amplitude detector, first integrator, comparator and former of alarm signal connected in series, additional integrator setting level of limiter. EFFECT: increased noise immunity of detector. 1 dwgr
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