Object detection device and method of operating the same

An object detection device comprising:

• a converter configured to receive a part of a transmission signal from a transmitter and a reflection signal of another part of the transmission signal that is transmitted to and reflected from an object, convert the part of the transmission signal and the reflection signal into a digital transmission signal and a digital received signal, respectively, according to a predetermined sampling period;
• a memory storing one or more instructions;
• and
• at least one processor configured to execute the one or more instructions to:
• resample the digital transmission signal and the digital received signal to obtain an resampled transmission signal and an resampled received signal;
• remove noise from each of the resampled transmission signal and the resampled received signal;
• generate a cross-correlation signal between the resampled transmission signal from which the noise is removed and the resampled received signal from which the noise is removed;
• and
• acquire a three-dimensional (3D) image of the object based on at least one peak value of the cross-correlation signal.