Figure 22
On the left, the line graph is labeled “(a)”. The vertical axis, labeled “Error percentage”, ranges from 0 to 3.5 percent in increments of 0.5 percent. The horizontal axis, labeled “Distance in meters”, ranges from 10 to 90 meters in increments of 10 meters. A single thin solid line forms a smooth curve. The line begins at (12, 2.823), rises slightly and peaks at (15, 3.112), then decreases steadily to (60, 012). After reaching the minimum, the line rises gently and ends at (85, 0.553). On the right, the line graph is labeled “(b)”. The vertical axis, labeled “Error in meters”, ranges from 0 to 0.6 meters in increments of 0.1 meters. The horizontal axis, labeled “Distance in meters”, ranges from 10 to 90 meters in increments of 10 meters. A single thin solid line forms a smooth curve. The line begins at (12, 0.381), rises to a peak at (22, 0.561), then decreases steadily to (60, 023). After the minimum, the line rises again and ends at (85, 0.451). Note: All numerical data values are approximated.The trend of (a) percentage error and (b) absolute error, calculated from the difference between radar and GPS sensors during Test 4 in the along-track modality