Operating the R&S
QAR
R&S
®
QAR
58
User Manual 1178.7200.02 ─ 04
After the position and orientations of both radar and sensor and have been found in the
image, the R&S
QAR uses the CAD model of the radar sensors emission cone to cal-
culate the intersection area of the emission cone and the radome.
Finally, the R&S
QAR calculates the shortest distance between the intersection area of
the radar emission cone and the boundaries of the allowed area.
Measuring the DUT
1. Select the configuration from the "Car Type" drop-down list.
2. Select "Options" > "Alarm Limits" to define acceptance limits.
For more information, see
"Managing measurement results"
3. Select "Measure".
The R&S
QAR measures the DUT, which takes a few seconds. Do not move the
radar during the measurement.
After a few seconds, the results appear in the user interface.
Graphic results
The image shows the CAD data and, as an overlay, the measurement results.
The colors have the following meaning:
●
The green contour corresponds to the border polygon.
●
The orange contour corresponds to the theoretical radar beam intersection.
●
The red contour corresponds to the measured radar beam intersection.
●
The yellow lines correspond to the measured distances.
You can display the graphical results as a 2D screenshot or as 3D image.
► Select "Options" > "Save Settings" > "Save Screenhot".
● If you turn on "Save Screenhot", the image is a 2D image that shows the DUT
from the front.
● If you turn off "Save Screenhot", the image is a 3D image. You can turn the
image in any direction and view it from different angles. To do so, select the
image with the mouse pointer and move it in the direction you want.
Numeric results
Only available in advanced mode.
The numeric results show the measured distances and angles.
●
Numeric results that are within the tolerance limits are displayed in a black font.
●
Numeric results that are outside the tolerance limits are displayed in a red font.
The decision if a radar sensor is positioned correctly is based on the evaluation of eight
measurement points. For each measurement point, the R&S
QAR calculates the short-
est distance between the radar beam intersection on the radome and a specified bor-
der polygon (green contour in the graphic results).
Radar Positioning Measurements
