A system for testing automobile radar sensor configurations includes multiple probe arrays, multiple enclosures, a channel emulator and a test controller. The enclosures each enclose one of the probe arrays together with a corresponding different automobile radar sensor. Each probe array is configured to receive radar signals from the corresponding automobile radar sensor and emulate echo signals back to the corresponding automobile radar sensor. The channel emulator is configured to supply the echo signals to each of the probe arrays. The test controller includes a memory that stores instructions and a processor that executes the instructions. The test controller controls the channel emulator and is configured to perform performance testing on an automobile radar sensor configuration that includes the automobile radar sensors and an automobile driving controller that reacts to the echo signals received by each of the automobile radar sensors.

A method for analyzing the resolution and/or the accuracy of a transmission unit of a radar sensor is described wherein a transmitter signal is received via a receiving unit. At least one echo signal based on said received signal is simulated. The frequency difference of said transmitter signal and said echo signal is determined. Said frequency difference is filtered and transformed in order to obtain a transform. At least one maximum of said frequency difference in said transform is detected. Spectral properties of said frequency difference in said transform are determined. At least one quality parameter of said spectral properties is outputted. Further, a radar sensor is described.

A method for cancelling phase noise in a radar signal is described herein. In accordance with one embodiment, the method includes transmitting an RF oscillator signal, which represents a local oscillator signal including phase noise, to a radar channel and receiving a respective first RF radar signal from the radar channel. The first RF radar signal included at least one radar echo of the transmitted RF oscillator signal. Further, the method includes applying the RF oscillator signal to an artificial radar target composed of circuitry, which applies a delay and a gain to the RF oscillator signal, to generate a second RF radar signal. The second RF radar signal is modulated by a modulation signal thus generating a frequency-shifted RF radar signal. Further, the method includes subtracting the frequency-shifted RF radar signal from the first RF radar signal.

A LIDAR system includes a light source configured to generate an outgoing light signal that includes multiple channels that are each of a different wavelength. The system includes optical components that generate composite light signals. Each composite light signal includes light from a LIDAR input signal combined with light from a reference signal. The LIDAR input signals each includes light that was reflected by an object located apart from the system and that was included also in one of the channels. The reference signals do not include light that was reflected by the object but include light from one of the channels. Each of the composite signals is generated such that the reference signal and the LIDAR input included in the composite signal includes light from the same channel.

A LIDAR system is configured to generate an outgoing light signal that exits from the LIDAR system. The LIDAR system is configured to receive an incoming light signal that enters the LIDAR system and that includes light from the outgoing light signal. The LIDAR system also includes an optical switch that receives the outgoing light signal and the incoming light signal and is configured to be operated in different modes. The incoming light signal and/or the outgoing light signal are routed along different optical paths through the LIDAR system in response to the optical switch being in different modes.

A radar system including a reference channel formed symmetrically in relation to a main channel, with a first oscillator, generating a first input signal, which is feedable to an antenna in the main channel, a reflected portion of the first input signal being feedable to a first mixer, the first input signal in the reference channel being feedable to a second mixer via a second directional coupler, with a second oscillator, generating a second input signal having a frequency differing from the first input signal in a defined way, which is feedable to the first and second mixers, the signal coming from the mixer of the main channel and the signal coming from the mixer of the reference channel being compared, and dimensioning a terminating impedance of the reference channel as a function of the comparison so that the output signals of the main and reference channels have identical properties.

A computer implemented method for self-calibration of a Phased Array Antenna (PAA) having an array of N antenna elements. Each element operates as a transmit antenna element and/or as a receive antenna element. The method includes building an overdetermined system of linear equations presenting different couples of antenna elements. Each equation expressing a difference between a value of a real parameter, determined for a specific couple, and a sum of unknowns including unknown calibrated parameters of the antenna elements forming the specific couple, Next, solving the system of equations for obtaining a solution in the form of values of corrections to be applied to corresponding antenna elements in the array, in order to reduce the difference in each of the equations by bringing internal parameters of the antenna elements in a specific couple closer to their respective unknown calibrated parameters. Each couple being formed from a transmit antenna element and a receive antenna element positioned at an arbitrary distance from one another in the PAA array.

Methods, apparatus, systems and articles of manufacture are disclosed to test RADAR integrated circuits. A radar circuit comprising a local oscillator (LO), a transmitter coupled to the LO and configured to be coupled to a transmission network, a receiver configured to be coupled to the transmission network, and a controller coupled to the LO, the transmitter, and the receiver, the controller to cause the LO to generate a frequency modulated continuous waveform (FMCW), cause the transmitter to modulate the FMCW as a modulated FMCW, cause the transmitter to transmit the modulated FMCW via the transmission network and the receiver to obtain a received FMCW from the transmission network, and in response to obtaining the received FMCW from the receiver, generate a performance characteristic of the radar circuit based on the received FMCW.

An automotive testing method includes acquiring radar sensor data responsive to a radar excitation signal generated by a radar transmitting unit, forwarding the acquired radar sensor data to an electronic system of a radar receiving unit, generating radar data from the forwarded radar sensor data, and processing the radar data, wherein the step of acquiring radar sensor data includes generating synthetic radar data, the synthetic radar data being forwarded as radar sensor data to the electronic system of the radar receiving unit, where the synthetic radar data includes reflection signals, preferably all reflection signals, in a complex time series, that succeed each other and have the same temporal behavior within a synthetic period that lasts at least an order longer than a time period of the radar excitation signal.

A signal generation apparatus includes an extraction unit and a conversion unit. The extraction unit is configured to extract part of a frequency waveform as an extracted waveform. The frequency waveform is a waveform represented by a function of frequency. The part of the frequency waveform corresponds to frequencies satisfying a preset extraction condition indicating that amplitude of the frequency waveform is high. The conversion unit is configured to convert the extracted waveform extracted by the extraction unit into a time waveform, which is a waveform represented by a function of time, and generate the time waveform as a signal.