Abstract: The present disclosure relates to a computer implemented method for providing a SAR image with attenuated sidelobes and ghost targets caused by grating lobes, left-right ambiguity observed across the radar's boresight, or a combination thereof. The present disclosure further relates to a computer program product, a computer readable storage medium comprising instructions for performing the computer implemented method, and a SAR imaging system programmed for carrying out the computer implemented method.

Abstract: A system includes at least two photovoltaic modules each comprising a respective module area being substantially perpendicular to the thickness of the corresponding photovoltaic module. Each of the at least two module areas comprises at least one of two first sides being substantially perpendicular to the thickness of the corresponding photovoltaic module and/or two second sides being substantially perpendicular to the thickness of the corresponding photovoltaic module. In this context, the at least two module areas are arranged in a substantially parallel manner with respect to each other and are shifted with respect to each other in an extension direction of the system.

Abstract: A method is provided for indoor multipath ghosts recognition for a multiple-input-multiple-output radar with collocated antennas. The method includes the step of generating a two-dimensional Range-Doppler map for N number of consecutive radar data frames. The method further includes the step of applying a temporal clustering algorithm to the N number of consecutive radar data frames. Moreover, the method includes the step of applying a linear pattern extraction algorithm on the two-dimensional Range-Doppler map. In this context, the two-dimensional Range-Doppler map comprises detections from at least one target, at least one first-order ghost, and at least one second-order ghost with respect to one wall reflector.

Abstract: A radar signal for transmitting by a radar transmitter, wherein the radar signal is modulated by a modulation signal comprising at least two repetitions of a sequence element, wherein the sequence element comprises at least two repetitions of at least two sequences of a same length, such that the modulation signal is periodic; wherein the at least two sequences are correlated such that a sum of correlation of the at least two sequences is less than ?60 dB, preferably less than ?70 dB, most preferably less than ?80 dB.

Abstract: A method for use in radar processing, comprises processing a radar signal captured by a radar receiver, said processing comprising determining, for a scattering object a direction of departure from a radar transmitter to said scattering object; and a direction of arrival at said radar receiver from said scattering object; and calculating a position of said scattering object based on said direction of arrival; said direction of departure; and predetermined position and orientation information of said radar transmitter in relation to said radar receiver, whereby said calculating of said position of said scattering object is unbiased by a time synchronization offset between said radar transmitter and said radar receiver.

Abstract: A method for facilitating robust radar detection comprises generating a radar signal in a digital domain along at least one transmission path, the radar signal comprises a number of M periodic repetitions of a code sequence with a length Lc, multiplied with a progressive phase rotation ej·?/K·n, where Lc and M are integers, K is an integer or a non-integer, and n is a discrete time index corresponding to a code rate. The method further comprises generating a process input signal in the digital domain along at least one receiving path from a digitized reflection signal corresponding to the radar signal by multiplying the digitized reflection signal with a progressive phase rotation e?j·?/K·n. In this context, K is defined such that a ratio Lc/2·K is a non-integer, and M is defined such that a ratio Lc·M/2·K is an integer.

Abstract: A method is provided for indoor multipath ghosts recognition for a multiple-input-multiple-output radar with collocated antennas. The method includes the step of generating a two-dimensional Range-Doppler map for N number of consecutive radar data frames. The method further includes the step of applying a temporal clustering algorithm to the N number of consecutive radar data frames. Moreover, the method includes the step of applying a linear pattern extraction algorithm on the two-dimensional Range-Doppler map. In this context, the two-dimensional Range-Doppler map comprises detections from at least one target, at least one first-order ghost, and at least one second-order ghost with respect to one wall reflector.

Abstract: A method of radar ranging comprises transmitting a digitally-modulated signal comprising successively in time, for each sequence in a plurality N of sequences, a plurality M+1 of repeats of said sequence, wherein each said sequence consists of a plurality Lc of digitally-modulated chips, wherein at least one sequence in the plurality of sequences is different from another sequence in said plurality of sequences; receiving a version of the digitally-modulated signal reflected scattered by one or more physical targets; for each sequence in the plurality of sequences, performing a preliminary target estimation; and using each said preliminary target estimation for all sequences in the plurality of sequences, performing a final target estimation.

Abstract: A method is provided for facilitating radar detection robust to IQ imbalance. The method comprises the step of generating a radar signal in digital domain comprising a number of M periodic repetitions of a code sequence with a length Lc, multiplied with a progressive phase rotation e j · ? K · n , where Lc and M are integers, K is an integer or a non-integer, and n is a discrete integer variable. The method further comprises the step of generating a process input signal in digital domain from a reflection signal corresponding to the radar signal by multiplying the reflection signal with a progressive phase rotation e - j · ? K · n . In this context, K is defined such that a ratio Lc K is a non-integer, and M is defined such that a ratio Lc · M K is an integer.

Abstract: Example embodiments describe a radio device for wireless communication and radar sensing, the radio device including: a transmitter configured to generate a modulated RF signal and to transmit the modulated RF signal via a transmitting antenna; and a receiver configured to receive a modulated RF signal via a receiving antenna and to down-convert the received modulated RF signal. The radio device additionally includes a selector unit configured to provide the receiver with a copy of the transmit modulated RF signal, or, a local oscillator signal for down-converting the received modulated RF signal, thereby enabling wireless communication and radar sensing operation.

Abstract: A system is provided for joint communication and radar sensing. The system includes at least one communication transmitter unit configured to transmit at least one communication pilot signal, at least one radar transmitter unit configured to transmit at least one radar pilot signal, a control unit configured to schedule the transmission of the at least one communication transmitter unit and/or the at least one radar transmitter unit using a time delay, and at least one receiver unit configured to receive the at least one radar pilot signal with the time delay with respect to the at least one communication pilot signal. A method of using the system for joint communication and radar sensing is also provided.

Abstract: A system for providing distributed communication with respect to a user equipment is provided. The system includes multiple communication units for distributing the communication with respect to the user equipment, a communication management unit connected to at least a pan of the multiple communication units in a connection line for managing the distributed communication, a connection unit including loss-inserting properties for connecting the multiple communication units to the connection line, an amplifying unit for being arranged with respect to the connection units, and a scheduling unit. The scheduling unit is configured to determine power loss with respect to the units on the basis of the corresponding loss-inserting properties and/or to schedule at least one of the multiple communication units and/or the at least one amplifying unit m order to compensate for power loss with respect to the at least one connection unit.

Abstract: An orthogonal frequency-division multiplexing (OFDM) based radar signal comprising Q sub-carriers adapted to push an IQ-imbalance component out of a subset of L contiguous range bins of range profiles derived out of the received radar signal and wherein L is at most Q/2, is disclosed.

Abstract: In a radar system, a cancellation circuit is described for compensating for the effects of spillover between each transmitter and a receiver. The cancellation circuit is configured for applying cancellation signals to the receiver which are generated in a cancellation filter utilizing a primary impulse response characteristic corresponding to the spillover, a signal to be transmitted from each transmitter in the radar system, and a range profile output from the receiver. The cancellation circuit may also include a secondary impulse response characteristic module and a dithering module to improve the sensitivity of the receiver.

Abstract: A method for facilitating robust radar detection comprises generating a radar signal in a digital domain along at least one transmission path, the radar signal comprises a number of M periodic repetitions of a code sequence with a length Lc, multiplied with a progressive phase rotation ej·?/K·n, where Lc and M are integers, K is an integer or a non-integer, and n is a discrete time index corresponding to a code rate. The method further comprises generating a process input signal in the digital domain along at least one receiving path from a digitized reflection signal corresponding to the radar signal by multiplying the digitized reflection signal with a progressive phase rotation e?j·?/K·n. In this context, K is defined such that a ratio Lc/2·K is a non-integer, and M is defined such that a ratio Lc·M/2·K is an integer.

Abstract: A method is provided for facilitating radar detection robust to IQ imbalance. The method comprises the step of generating a radar signal in digital domain comprising a number of M periodic repetitions of a code sequence with a length Lc, multiplied with a progressive phase rotation e j · ? K · n , where Lc and M are integers, K is an integer or a non-integer, and n is a discrete integer variable. The method further comprises the step of generating a process input signal in digital domain from a reflection signal corresponding to the radar signal by multiplying the reflection signal with a progressive phase rotation e - j · ? K · n . In this context, K is defined such that a ratio Lc K is a non-integer, and M is defined such that a ratio Lc · M K is an integer.

Abstract: A system for providing distributed wireless communication for at least one user equipment with connectivity and/or security against at least one eavesdropper is provided. The system includes wireless communication units and a scheduling unit. In this context, the scheduling unit is configured to schedule a first subset of the wireless communication units for radar sensing in order to gather radar sensing information with respect to the at least one user equipment, the environment of the at least one user equipment, the at least one eavesdropper, the environment of the at least one eavesdropper, or any combination thereof. In addition to this, the scheduling unit is configured to schedule a second subset of the wireless communication units for distributing the wireless communication with respect to the at least one user equipment on the basis of the radar sensing information.

Abstract: A system for providing distributed communication with respect to a user equipment is provided. The system includes multiple communication units for distributing the communication with respect to the user equipment, a communication management unit connected to at least a pan of the multiple communication units in a connection line for managing the distributed communication, a connection unit including loss-inserting properties for connecting the multiple communication units to the connection line, an amplifying unit for being arranged with respect to the connection units, and a scheduling unit. The scheduling unit is configured to determine power loss with respect to the units on the basis of the corresponding loss-inserting properties and/or to schedule at least one of the multiple communication units and/or the at least one amplifying unit m order to compensate for power loss with respect to the at least one connection unit.

Abstract: A method is provided for indoor multipath ghosts recognition for a multiple-input-multiple-output radar with collocated antennas. The method includes the step of generating a two-dimensional Range-Doppler map for N number of consecutive radar data frames. The method further includes the step of applying a temporal clustering algorithm to the N number of consecutive radar data frames. Moreover, the method includes the step of applying a linear pattern extraction algorithm on the two-dimensional Range-Doppler map. In this context, the two-dimensional Range-Doppler map comprises detections from at least one target, at least one first-order ghost, and at least one second-order ghost with respect to one wall reflector.

Abstract: A method of radar ranging comprises transmitting a digitally-modulated signal comprising successively in time, for each sequence in a plurality N of sequences, a plurality M+1 of repeats of said sequence, wherein each said sequence consists of a plurality Lc of digitally-modulated chips, wherein at least one sequence in the plurality of sequences is different from another sequence in said plurality of sequences; receiving a version of the digitally-modulated signal reflected scattered by one or more physical targets; for each sequence in the plurality of sequences, performing a preliminary target estimation; and using each said preliminary target estimation for all sequences in the plurality of sequences, performing a final target estimation.