Bosch CR5CBCC User Manual page 15

From
XC-DA/ECR3-Bp
Report
Issue 1.0
Topic CR5CBCC User Manual
Curvature of fascia for CR5CB
Curvature of the fascia may influence the radar performance, especially with low vertical tilt
angles. The minimum radius of the curvature shall be according to the following rules:
R > 300 mm, no significant influence expected
R < 300 mm, significant influence possible, not recommended
Absorber around the sensor
It is highly recommended to use a cone made of absorber material around the radar cone of the
sensor to prevent ghost targets. The design of the absorber cone must fulfill the following
design guidelines (reflection from outside the radar cone, multipath reflection).
Reflection from outside the radar cone
Reflections from structures located outside the radar cone have to be avoided.
Furthermore interference signals picked up by the sensor antennas should be avoided by
keeping a minimum distance (d) of 5 mm to 10 mm for parts in front of the sensor.
Even with compliance to the radar cone, reflections at parts outside the radar cone may disturb
the received signal. Reflections at parts causing an interference signal to the receiving antenna
and reflections at parts getting to the receiving antenna after a second reflection at the fascia
(multipath reflection).
Closed surfaces of brackets and masks made of metal or high reflecting material need a tilt
angle being arranged that the reflection is not received by the receiving antennas of the sensor.
Our Reference
Daniel Radics
Tel
+36 1 879-6276
CR5CBCC_User_manual.docx
Budapest
10 June 2021
Page 15 of 17