In addition to interesting DTI plots, many inventive RTI
experiments were also designed by the students in the course.
Figure 14 shows a number of results from these RTI experiments.
The first RTI plot, labeled (a), shows a person
walking first down a hallway away from the radar system
operating in ranging mode, then back again. Image (b) shows
six people involved in a three-on-three practice of ultimate
Frisbee, with rapidly changing returns from the numerous fast
moving players in the scene. The last two images show both a
single person (c), and multiple individuals (d), walking down
a hallway. These images are noticeably clearer than others, as
they utilize an improved 2-pulse clutter rejection algorithm
which subtracts the magnitude of the range profiles rather
than using coherent subtraction, which is not as effective for
this radar system because the rising edge of the left-channel
synchronization pulses are under-sampled at audio frequency
sample rates