Wavetronix VDR24 Radar - Manual (Page 30)

Installing Radar Sensors and Cables
30 VDR24 Radar Detection System, Rev 1.0
4.3. Aiming the Radar
The radar sensor must be initially aimed at the area where detection zones will be established.
Once the radars are connected to the VDR24 controller and the system is initially checked out, it
is generally necessary fine-tune the radar position to optimize detection timing and accuracy.
1. Tilt the sensor down so it is aimed at the center of the detection zone area.
2. If necessary, rotate the sensor so that the bottom edge of the sensor is parallel with
the roadway.
3. The sensor’s beams fan out 45° to the left and 45° to the right, creating a 90° corner
radar field of view. In most applications, you will want to position the corner radar so
that its 90° footprint covers all lanes or tracks within the detection area.
4. To visualize the extent of the sensor field of view, the 90° field of view is imprinted on
the top and bottom of the sensor case. If more of a visual indicator is needed, then a
square framing tool (e.g. rafter square) or other tool with a right angle can be held
above the sensor. By looking down both edges of the tool, you can visualize the extent
of the radar’s coverage and be sure that it covers the entire detection area of interest.
5. In a crossing application, side edge of each sensor’s quarter-circle shaped footprint is
optimally aligned with the entrance and exit gates on the sensor’s side of the crossing.
In this manner, the other side of the quarter-circle shaped detection footprint is aligned
with the edge of the roadway. For trapezoidal-shaped crossings, the detection footprint
should be centered on the extents of the crossing so that the footprint extends beyond
the gates and beyond the roadway.
It’s Easier If…
For better visibility of the 90 o aiming pattern located on the bottom of the sensor, it is helpful
to mark the edges with a black, permanent ink line. This permits better visibility by a ground
level assistant when adjusting the left-right position of the radar sensor.
You’ll Need This Information Later
Make note of the radar sensor serial numbers for each sensor location. This information will
be important in later steps when setting up the radars for configuration steps.