Hella RS5.3A User manual

Hella GmbH &
Co. KGaA
59552 Lippstadt
User’s Guide
Date: 2021-07-30
No.:
Page 1
Subject:
RS5.3A – Advanced driver assistance system – User’s Guide
Ref.:
signed by: checked by:
This document is confidential. Its contents are not to be exploited, passed on or disclosed to third parties without our express permission. All rights are reserved.
Hella 3399EN (2000-05)
Copyright Protection: Confidential - ISO 16016
RS5.3A – User’s Guide
The RS5.3A is an advanced driver assistant system, to warn the driver of the ego vehicle against
potential collisions with other road users to the side, to the rear and to the front of the ego vehicle.
This system is not meant to encourage aggressive driving. The absence of a warning will not guarantee
the absence of other road users. Responsibility for the safe operation of the vehicle remains with the
driver.

Hella GmbH &
Co. KGaA
59552 Lippstadt
Subject:
RS5.3A – Advanced driver assistance system – User’s Guide
Date: 2021-07-30
No.:
Page 2 of 8
Signed by: Checked by:
Hella 3399DE (2000-05)
This document is confidential. Its contents are not to be exploited, passed on or disclosed to third parties without our express permission. All rights are reserved.
Copyright Protection: Confidential - ISO 16016
1 Functions
The sensor is capable to detect other objects. With this recognition capability it covers for example the
following functionalities:
1.1 Blind-spot detection and lane-change warning
These functions monitor the neighboring lanes and warn the driver of the ego vehicle when an
intended lane change could cause a collision with other traffic participants.
1.2 Rear traffic alert
This function monitors the difficult to see zone at the rear side of the ego vehicle and warns the
driver against possible collisions with other moving road users when reversing out of a parking
space.
1.3 Pre-crash rear

Hella GmbH &
Co. KGaA
59552 Lippstadt
Subject:
RS5.3A – Advanced driver assistance system – User’s Guide
Date: 2021-07-30
No.:
Page 3 of 8
Signed by: Checked by:
Hella 3399DE (2000-05)
This document is confidential. Its contents are not to be exploited, passed on or disclosed to third parties without our express permission. All rights are reserved.
Copyright Protection: Confidential - ISO 16016
This function monitors the lane behind the ego vehicle and initiates safety measures when a
crash from behind is unavoidable.
1.4 Safe exit
This function monitors the area next to the car doors on the passenger's and on the driver's side
to the back and to the front and warns the driver if the car door cannot be opened safely.

Hella GmbH &
Co. KGaA
59552 Lippstadt
Subject:
RS5.3A – Advanced driver assistance system – User’s Guide
Date: 2021-07-30
No.:
Page 4 of 8
Signed by: Checked by:
Hella 3399DE (2000-05)
This document is confidential. Its contents are not to be exploited, passed on or disclosed to third parties without our express permission. All rights are reserved.
Copyright Protection: Confidential - ISO 16016
2 System Architecture
The system consists of two or more radar sensor units which are mounted in the front or rear corners of
a vehicle or on the left and right sides of a vehicle so that the respective peripheral sectors of the vehicle
can be observed.
The units interchange data between each other and the vehicle via the sensor CAN-bus.
All units incorporate an RF part and a microcontroller to perform the radar signal processing.
Block diagram of example system architecture.
Technical Data
Supply voltage +9 V … +18 V
Power consumption
typ
.
3.
7
W
Operating f
requency
range
7600
0 MHz ...
7700
0
MHz
Modulation bandwidth < 1000 MHz
Mod
ulation
FMCW
(fast chirps)
Antenna feed power 10 dBm (peak)
Rated
Maximum
output power
25 dBm
Antenna type Microstrip patch array
Transmit antenna g
ain
approx. 1
5
dBi
Operating temperature range -40°C ... +85°C

Hella GmbH &
Co. KGaA
59552 Lippstadt
Subject:
RS5.3A – Advanced driver assistance system – User’s Guide
Date: 2021-07-30
No.:
Page 5 of 8
Signed by: Checked by:
Hella 3399DE (2000-05)
This document is confidential. Its contents are not to be exploited, passed on or disclosed to third parties without our express permission. All rights are reserved.
Copyright Protection: Confidential - ISO 16016
3 Vehicle Integration
Since RADAR waves can penetrate plastics, the sensor integration is possible behind the bumper fascia
and thus invisible from the exterior. However, the plastic and other materials which surround the sensor
may cause bending, refraction and reflection of the RADAR waves. Distances, clearances, selected radii
and other constructive elements in their arrangement can lead to constructive or destructive interference
of the RADAR waves. That must be avoided by choosing a suitable integration position.
The sensors should be positioned in the vehicle at a height of 400 to 700 mm above the road surface. If
that cannot be fulfilled, then the deviating installation height must be agreed upon with Hella GmbH. &
Co. KGaA.
Warning: The radar sensor should be installed and operated with minimum distance of 20 cm between
the radiator and the human body.
3.1 Spatial orientation of the sensors
The RS5.3 sensors can be mounted in the front, side and/or rear area of a vehicle under defined angles:
Rear side integration: approx. 45 deg
Side integration: approx. 90 deg