Doppler is acquired by connecting the Vtune input of the
VCO (OSC1) to a steady DC voltage and recording a .wav file
while directing the radar at moving targets. A MATLAB script
reads the .wav file and generates a DTI plot by ignoring the
synchronization pulses (Left channel) and parsing the video
data (right channel) into 100 ms blocks then computing the
Fourier transform. The log magnitude of the result is plotted
as a DTI plot, where, for example more than a dozen vehicles
traveling at a velocity of up to about 13 m/s are observed (Fig.
7).