Method of detecting traffic using radar involves using electromagnetic wave and filtering spectral beam with target detection when beam amplitude is above set value

摘要

The traffic control method using radar involves emitting an electromagnetic wave at a carrier frequency (F) modulated to a much lower modulation frequency (Fm). It involves mixing a received electromagnetic wave with the emitted wave. A spectral beam is filtered corresponding to a harmonic of an order to impair the modulation frequency. A target presence signal is emitted when the filtered spectral beam has an amplitude above a set level.