A system simulates a moving target for a radar system under test. The system includes a Doppler simulation circuit (DSC), coupled to an input, to apply a frequency shift to RF pulses received on an RF signal to simulate speed. A signal attenuator coupled to the DSC is to simulate signal attenuation due to propagation loss of the RF pulses in atmosphere. A pulse detection circuit is to detect time of receipt of the RF pulses, including a first time of receipt of a falling edge of a first RF pulse. An I/O controller updates a value of the frequency shift for the DSC and of the signal attenuation for the signal attenuator during a time period between the first RF pulse and one of a second RF pulse or a second time at which the second RF pulse should have been received in case of a missing pulse.

A generator for generating two- or multi-dimensional frequency representations of synthetic radar signals from a set of radar signals measured by a physical radar sensor. The generator includes a random number generator and a first AI module, which, as input, receives vectors or tensors of random values from the random number generator and uses an internal processing chain to map each such vector, respectively each such tensor, onto a two- or multi-dimensional frequency representation of a synthetic radar signal. The internal processing chain of the first AI module is parameterized by a multiplicity of parameters which are set in such a way that the two- or multi-dimensional frequency representation of the radar signal and/or at least one characteristic derived therefrom have the same distribution for the synthetic radar signals as for the measured radar signals.

A method of mitigates RF interference from an RF interferer. An RF signal is received at an RF transceiver during a time period. The RF signal that includes, for at least a portion of the time period, an interference signal having a cyclic transmission pattern with at least one deterministic feature. The received RF signal is analyzed in order to determine timing information for the at least one deterministic feature and the associated interference signal cyclic transmission pattern. Transmission of the RF signals from the RF transceiver are synchronized with the interference signal transmission pattern based on the determined timing information to mitigate interference between the RF signals and the interference signal.

A distance measuring apparatus according to an embodiment includes, a filter section configured to perform band limitation on a transmission signal and output the transmission signal, and to perform band limitation on a reception signal from an antenna section and output the reception signal, a distance measuring section configured to perform a distance measurement computation based on the transmission signal and the reception signal, and to obtain a delay of a signal passing through the filter section and perform calibration of the distance measurement computation, a signal interruption section configured to interrupt transmission of a signal between the filter section and the antenna section, and a control section configured to control the signal interruption section to interrupt the transmission of the signal during a period of the calibration.

A radar system is provided that includes a receive channel configured to receive a reflected signal and to generate a first digital intermediate frequency (IF) signal based on the reflected signal, a reference receive channel configured to receive a reflected signal and to generate a second digital IF signal based on the reflected signal, and digital mismatch compensation circuitry coupled to receive the first digital IF signal and the second digital IF signal, the digital mismatch compensation circuitry configured to process the first digital IF signal and the second digital IF signal to compensate for mismatches between the receive channel and the reference receive channel.

A test system simulates a moving target for a radar system under test. The test system includes a Doppler simulation circuit, coupled to an input, to apply a frequency shift to RF pulses received on an RF signal generated by the radar system to simulate speed. A signal delay sub-system produces a delay in the RF pulses to simulate distance. A pulse detection circuit is to detect time of receipt of the RF pulses, including a first time of receipt of a falling edge of a first RF pulse. An I/O controller updates a value of the frequency shift for the Doppler simulation circuit and of the delay for the signal delay sub-system during a time period between the first RF pulse and one of a second RF pulse or a second time at which the second RF pulse should have been received in case of a missing pulse.

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.

A radar test computing system includes a host interface coupled to a programmable input/output (I/O) controller, which is to interface with propagation path replicator (PPR) circuitry. A processing device is to detect a start signal received from the controller; receive an update request from the controller in response to detection, by the PPR circuitry, of a first radio RF pulse on a RF signal received from the radar system; retrieve scenario data of distance to and speed of the moving target for a second RF pulse expected to follow the first RF pulse; calculate, using retrieved scenario data, values of a frequency shift, a signal delay, and a signal attenuation for the second RF pulse; and send, during a time period between the first and second RF pulses, these values to the controller for use by the PPR circuitry to simulate the moving target for the second RF pulse.

A test system simulates a moving target for a radar system under test. The test system includes a Doppler simulation circuit, coupled to an input, to apply a frequency shift to RF pulses received on an RF signal generated by the radar system to simulate speed. A signal delay sub-system produces a delay in the RF pulses to simulate distance. A pulse detection circuit is to detect time of receipt of the RF pulses, including a first time of receipt of a falling edge of a first RF pulse. An I/O controller updates a value of the frequency shift for the Doppler simulation circuit and of the delay for the signal delay sub-system during a time period between the first RF pulse and one of a second RF pulse or a second time at which the second RF pulse should have been received in case of a missing pulse.

A generator for generating two- or multi-dimensional frequency representations of synthetic radar signals from a set of radar signals measured by a physical radar sensor. The generator includes a random number generator and a first AI module, which, as input, receives vectors or tensors of random values from the random number generator and uses an internal processing chain to map each such vector, respectively each such tensor, onto a two- or multi-dimensional frequency representation of a synthetic radar signal. The internal processing chain of the first AI module is parameterized by a multiplicity of parameters which are set in such a way that the two- or multi-dimensional frequency representation of the radar signal and/or at least one characteristic derived therefrom have the same distribution for the synthetic radar signals as for the measured radar signals.