Page 29 - ATZ WORLDWIDE

platform includes medini Analyze, which
efficiently implements core activities of
functional safety analysis and integrates
it into the product development process.

SENSOR PERFORMANCE
SIMULATION
Sensors are new key components that
have to be developed for automated and
autonomous driving. Simulation uses
high-fidelity physics to predict the per-
formance of sensors such as radar, V2X
communication, GPS antennas and ultra-
sonic sensors. Particularly, since simula-
tion predicts radar patterns and gain in
specific driving scenarios, FIGURE 4:
Expensive and time-intensive physical
testing becomes unnecessary. In addi-
tion, simulation computes the changes
in the performance of a radar, such as FIGURE 3 Example for a Scade software model (© Ansys)
caused by rain or snow. This provides
precise insights into realistic radar oper-
ation at a fraction of the time and cost
of field tests. The Ansys simulation plat- – isolated radar simulation: Here the dation of radar performance due to
form contains an electromagnetic field radar antenna and radome are simu- obstacles such as radiator grills, pres-
solver (High Frequency Structural Simu- lated as placed in free space. This ena- ent in the vehicle, FIGURE 5.
lator, HFSS) and a path-tracing-solver bles rapid parametric studies to opti- – in-environment radar simulation: Here
(Shooting and Bouncing Rays, SBR+) mise geometric and material design of the performance of the radar is repro-
which are used for the high-resolution antennas and radomes. duced in a realistic environment com-
simulations of automotive radars. These – as-installed radar simulation: In this prising of other vehicles, buildings,
simulations accelerate four radar devel- case, the radar is mounted on a vehicle pedestrians, trees, etc. With a given
opment aspects, as follows: with the aim of determining the degra- input signal at the transmitting

FIGURE 4 Optimisation of a radar beam: (a) simulation of radar antenna pattern, (b) layer composition, (c) effect of radome on radar antenna pattern (© Ansys)
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