User's Manual

Chassis Systems Control
From
Our Reference
XC-DA/ESR1
Robert Binder
FR5TPCC User Manual
Issue
2.0
for Radio International Type Approval
01-December-2021
Page 3 of 16
FR5TPCC 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 by measurement of signal’s travel time and Doppler
shift. Direction of the target is determined by using phase difference of the received signal
between different Rx antennas.
Using the Bosch chirp sequence radar modulation, the FR5TPCC allows unambiguous
determination of relative speed in a single measurement cycle. Therefore, no complex object
models are needed for ambiguity resolution.
The values calculated from detected radar reflections are basis for building a comprehensive
model of the sensed environment.
3 User information
3.1 General description
The FR5TPCC 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.
Fitted in front of the vehicle, the FR5TPCC monitors continuously vehicle surroundings,
supporting driver and vehicle systems with emergency braking, cruise control and distance
indicator.
3.2 Areas of application
The FR5TPCC is the base for range of safety and driver assistance functions. In particular, the
FR5TPCC can be used for the following functions:
3.2.1 Predictive emergency braking system
With the FR5TPCC, vehicle manufacturers can meet the requirements for the automatic
emergency braking systems “AEB City” and “AEB Urban” as outlined in the Euro NCAP
assessment scheme.