Yonsei University

Geun Haeng Lee

Tae Wook Kim

Min Jae Yoo

A distance measuring apparatus includes: a digital-to-time converter (DTC) configured to receive a clock signal and output a pulse corresponding to a provided code; an in-phase (I) template generation part configured to be triggered by the pulse output from the DTC to generate an I template impulse signal; a quadrature (Q) template generation part configured to be triggered by the pulse output from the DTC to generate a Q template impulse signal; and an I correlator configured to perform demodulation with the signal reflecting off the target and the I template impulse signal, and a Q correlator configured to perform demodulation with the signal reflecting off the target and the Q template impulse signal, wherein the distance measuring apparatus converts a result of demodulation into a digital code to measure the distance to the target.

Distance measuring apparatus and impulse IQ signal mismatch calibration apparatus

Disclosed is a modulation method for modulating n-bit data (n=p+q+r). The modulation method includes forming a time difference between a data impulse and a sync impulse to correspond to p-bit data, modulating the amplitude of the sync impulse to correspond to q-bit data and modulating the amplitude of the data impulse to correspond to r-bit data, and combining the sync impulse and the data impulse. As an example, n may be equal to p+q+r.

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Seoul, South Korea

Geun Haeng Lee