User Information; Principle - Bosch FR5CUEC Quick Start Manual

Chassis Systems Control
Model
FR5CUEC User Manual ITA
Changes or modifications made to this equipment not expressly approved by Robert Bosch
GmbH may void the FCC authorization to operate this equipment.
This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio frequency energy and, if
not installed and used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a residential area is likely
to cause harmful interference in which case the user will be required to correct the interference
at his own expense.
Radiofrequency radiation exposure Information:
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled
environment. This equipment should be installed and operated with minimum distance of 20
cm between the radiator and your body.
This transmitter must not be co-located or operating in conjunction with any other antenna or
transmitter.

5 User information

5.1 Principle

The FR5CUEC radar sensor and control unit (SCU) contains a FMCW radar transceiver
operating in the globally harmonized frequency range of 76.0 - 77.0 GHz. It senses targets by
emitting many short frequency modulated waves using the transmit antennas while receiving
waves reflected by targets using the receive antennas. Distance and relative speed are
determined via beat frequency (due to travelling time of the waves) and phase differences
between ramps (due to change of distance in short time). By using the antenna diagram the
angles of departure and arrival of the radar waves can be determined.
Using the Bosch chirp sequence radar modulation, the FR5CUEC allows unambiguous
determination of relative speed in a single measurement cycle. Therefore, no complex object
models are needed for ambiguity resolution.
The radar reflections (strength, distance and relative speed, angular direction, and derived
values) are basis for building a comprehensive model of the sensed environment.
Document Dept.
XC-DA/ESR1
Leonberg
20 December 2021
Page 7 of 15