Direction sensitive doppler processor

摘要: The invention relates to an improvement in direction sensitive ultrasonic Doppler detecting devices wherein transducer transmits a given frequency signal toward object which turn reflects the and shifted signals based on movement of object. reflected including are processed evaluated determine characteristics both as degree. insertion differentiating circuit processing minimizes false interpretation caused by non-harmonic oscillatory Furthermore through addition utilizing non-linear multiplier for multiplying instantaneous values components contrast linear multiplication these signals, loss sensitivity Dopper detection device function distance is represented 1/(distance object) instead object)2 case conventional coherent devices.