The present disclosure relates to a method for cancelling spillover in a MIMO radar system. The method comprises (i) transmitting and receiving a signal in a transmit-receive pair, the received signal including a spillover signal; (ii) routing a part of the transmitted signal of the transmit-receive pair to the received signal to increase the power level of the spillover signal; and (iii) cancelling the spillover signal and the part of the transmitted signal by a spillover cancellation subsystem associated with the transmit-receive pair. Because the part of the transmitted signal corresponds to the spillover signal, both of these signals may be added together to result in a combined signal having a high enough power level to improve the functioning of the spillover cancellation subsystem.

A method for operating a stepped frequency radar system is disclosed. The method involves performing stepped frequency scanning across a first frequency range using frequency steps of a first step size, the stepped frequency scanning performed using at least one transmit antenna and a two-dimensional array of receive antennas, changing from the first step size to a second step size, wherein the second step size is different from the first step size, and performing stepped frequency scanning across a second frequency range using the at least one transmit antenna and the two-dimensional array of receive antennas and using frequency steps of the second step size.

A method for operating a stepped frequency radar system is disclosed. The method involves performing stepped frequency scanning across a first frequency range using frequency steps of a first step size, the stepped frequency scanning performed using at least one transmit antenna and a two-dimensional array of receive antennas, changing from the first step size to a second step size, wherein the second step size is different from the first step size, and performing stepped frequency scanning across a second frequency range using the at least one transmit antenna and the two-dimensional array of receive antennas and using frequency steps of the second step size.

Disclosed is a method and apparatus which use a first automatic gain control unit to receive a first data signal, use a second automatic gain control unit to receive a reflected radar signal, and switches between using the first automatic gain control unit and using the second automatic gain control unit.

Disclosed is a method and apparatus which use a first automatic gain control unit to receive a first data signal, use a second automatic gain control unit to receive a reflected radar signal, and switches between using the first automatic gain control unit and using the second automatic gain control unit.

A constant false alarm rate (CFAR) device for a signal detection system is disclosed herein. The CFAR device includes a first signal selection unit and a second signal selection unit. The first signal selection unit receives a last signal of a lagging sorting array and signals of one or more lagging guard cells, selects any one of the last signal of the lagging sorting array and the signals of the one or more lagging guard cell as a test signal based on a received guard cell size, and outputs the test signal. The second signal selection unit receives the test signal and signals of one or more leading guard cells, selects any one of the test signal and the signals of the one or more leading guard cells based on the guard cell size, and transfers this selected signal to the leading sorting array.

Level measuring device which can compensate the distortions, caused by an STC filter, of the received signal, by measuring a reference signal which passes through the receiving branch and also through the STC filter, during the ongoing operation of the level measuring device or during manufacture. For example, after passing through the receiving branch, this reference signal can be fed to a microprocessor which can calculate the correction values of the IF signal therefrom. A switch can be provided which can switch over between the reference signal and the IF signal.

A method for operating a stepped frequency radar system is disclosed. The method involves performing stepped frequency scanning across a frequency range using frequency steps of a step size, the stepped frequency scanning performed using at least one transmit antenna and a two-dimensional array of receive antennas, changing at least one of the step size and the frequency range, and performing stepped frequency scanning using the at least one transmit antenna and the two-dimensional array of receive antennas and using the changed at least one of the step size and the frequency range.

A radar includes a transmitter that generates a first signal that is a frequency modulated continuous wave (FMCW) signal and radiates the generated first signal to an outside, a receiver that receives a second signal based on the first signal and generates a baseband signal of the second signal, a signal processor that extracts a target frequency signal from the baseband signal, and a signal converter that outputs the target frequency signal that is controlled as a digital signal, and wherein the signal processor includes a high pass filter connected to the receiver, that receives the baseband signal, and attenuates a low frequency signal present in the received baseband signal, based on a first cutoff frequency, an amplifier that amplifies the attenuated baseband signal, and a signal controller that removes a direct current component of the amplified baseband signal, based on a second cutoff frequency.

Techniques and apparatuses are described that implement a multi-radar system within a device and optimize operation of the multi-radar system. The multi-radar system includes two or more radar circuits located at different positions on the device. The multi-radar system also includes an optimization controller, which controls operational states of the radar circuits. In particular, the optimization controller determines respective operational states of the radar circuits to optimize performance of the multi-radar system under certain constraints. For example, the optimization controller can alter the respective operational states for different radar circuits responsive to detecting various trigger events. In this way, the optimization controller can selectively alter the operational states of the radar circuits for various situations.