Patent ID: 11940556
Assignee: DSPACE GMBH
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A testing device for testing a distance sensor that operates using electromagnetic waves, the testing device comprising:
a receiver for receiving an electromagnetic free-space wave as a receive signal;
an analog-to-digital converter configured to, in a simulation mode, convert the receive signal or a receive signal derived from the receive signal into a sampled signal;
a signal-processing unit configured to:
delay, using a settable time delay, the sampled signal or a modulated sampled signal to form a delayed sampled signal or a modulated delayed sampled signal; and
modulate, upon the sampled signal or upon the delayed sampled signal, a predeterminable Doppler signature as a characteristic motion profile of a reflecting object to be simulated to form the modulated sampled signal or the modulated delayed sampled signal;

a digital-to-analog converter configured to convert the modulated sampled signal or the modulated delayed sampled signal into a simulated reflected signal; and
a transmitter configured to radiate the simulated reflected signal or a simulated reflected signal derived from the simulated reflected signal as an output signal;
wherein the signal-processing unit is configured to:
split the sampled signal or the delayed sampled signal into orthogonal signal components;
modulate the orthogonal signal components with respective orthogonal signal components of the Doppler signature; and
combine the modulated orthogonal signal components so obtained to form the modulated sampled signal or the modulated delayed sampled signal.