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

Claim 5:
6. A computer-implemented method for operating a testing device for testing a distance sensor that operates using electromagnetic waves, comprising:
receiving, by a receiver of the testing device, an electromagnetic free-space wave as a receive signal;
converting, by an analog-to-digital converter of the testing device, in a simulation mode, the receive signal or a receive signal derived from the receive signal into a sampled signal;
delaying, by a signal-processing unit of the testing device, 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;
modulating, by the signal-processing unit, 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;
converting, by a digital-to-analog converter of the testing device, the modulated sampled signal or the modulated delayed sampled signal into a simulated reflected signal; and
radiating, by a transmitter of the testing device, the simulated reflected signal or a simulated reflected signal derived from the simulated reflected signal as an output signal;
wherein the signal-processing unit splits the sampled signal or the delayed sampled signal into orthogonal signal components, modulates the orthogonal signal components with respective orthogonal signal components of the Doppler signature, and combines the modulated orthogonal signal components so obtained to form the modulated sampled signal or the modulated delayed sampled signal.