Test assembly and method for testing a radar sensor
AssigneedSPACE GmbH
InventorsAndreas Himmler, Jeffrey Paul, Jonathan Watkins
Life of this patent
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Abstract
A test assembly for testing a radar sensor includes: a receptacle for the radar sensor, wherein the radar sensor is configured to transmit a radar signal; at least one receive antenna configured to receive the radar signal; at least two transmit antennas each configured to transmit one reflection signal, wherein a superposition signal, which is a superposition of the reflection signals is receivable by the radar sensor; and a computer configured to ascertain at least one parameter of the respective reflection signals on the basis of the received radar signal. The test assembly comprises more transmit antennas than receive antennas.
Claims18
A test assembly for testing a radar sensor, comprising:
- a receptacle in which the radar sensor is disposed, wherein the radar sensor is configured to transmit a radar signal;
- at least one receive antenna configured to receive the radar signal;
- at least two transmit antennas each configured to transmit one reflection signal, wherein a superposition signal, which is a superposition of the reflection signals is receivable by the radar sensor, wherein the test assembly comprises more transmit antennas than receive antennas;
- and
- a computer configured to:
- ascertain, based on the received radar signal, at least one parameter of respective reflection signals to be transmitted by the at least two transmit antennas, wherein ascertaining the at least one parameter of the respective to-be-transmitted reflection signals comprises ascertaining respective amplitudes of the respective to-be-transmitted reflection signals, wherein an amplitude ratio of the respective amplitudes simulates an antenna being provided at a virtual position and a virtual direction from which the superposition signal is received by the radar sensor;
- and
- transfer the respective to-be-transmitted reflection signals to the at least two transmit antennas;
- wherein ascertaining the at least one parameter of the respective to-be-transmitted reflection signals takes into account respective signal paths between the computer and respective transmit antennas.
A method for testing a radar sensor, comprising:
- transmitting, by the radar sensor, a radar signal, wherein the radar sensor is disposed in a receptacle;
- receiving, by at least one receive antenna, the radar signal;
- ascertaining, by a computer, based on the received radar signal, at least one parameter of respective reflection signals to be transmitted by the at least two transmit antennas, wherein ascertaining the at least one parameter of the respective to-be-transmitted reflection signals comprises ascertaining respective amplitudes of the respective to-be-transmitted reflection signals, wherein an amplitude ratio of the respective amplitudes simulates an antenna being provided at a virtual position and a virtual direction from which a superposition signal is received by the radar sensor, and wherein ascertaining the at least one parameter of the respective to-be-transmitted reflection signals takes into account respective signal paths between the computer and respective transmit antennas;
- transferring, by the computer, the respective to-be-transmitted reflection signals to the at least two transmit antennas;
- transmitting, by each of at least two transmit antennas, one reflection signal to the radar sensor, wherein a quantity of receive antennas corresponding to the at least one receive antenna is less than a quantity of transmit antennas corresponding to the at least two transmit antennas, and wherein the transmitted reflection signals form the superposition signal;
- and
- receiving, by the radar sensor, the superposition signal.
Dependencies are inferred from the claim text.