Abstract: The present subject matter relates to a radar system for detecting the surroundings of a moving object, in particular a vehicle and/or a transport device, such as in particular a crane, wherein the system is mounted or mountable on the moving object, wherein the radar system comprises at least one first, non-coherent, and at least one second, non-coherent, radar module with at least one antenna, wherein the radar modules are arranged or can be arranged distributed on the moving object, wherein at least one first radar module is configured differently from at least one second radar module.

Abstract: The disclosure relates to a method for calibrating at least one signal and/or system parameter of a wave-based measurement system, in particular radar measurement system. At least one receiving unit for receiving signals and an object scene assume several spatial positions relative to each other assume, wherein a relative positioning of the several positions to each other is known or determined, and at these several positions the signals are coherently detected by the at least one receiving unit, whereby a set of several coherent measurement signals is formed.

Abstract: The invention relates to a radar system for capturing surroundings of a moving object, in particular a vehicle and/or a transportation apparatus, such as a crane, in particular, wherein the system is mounted or mountable on the moving object, wherein the radar system comprises at least two non-coherent radar modules (RM 1, RM 2, . . . RM N) having at least one transmitter antenna and at least one receiver antenna, wherein the radar modules (RM 1, RM 2, . . . RM N) are arranged or arrangeable in distributed fashion on the moving object, wherein provision is made of at least one evaluation device which is configured to process transmitted and received signals of the radar modules to form modified measurement signals in such a way that the modified measurement signals are coherent in relation to one another.

Abstract: The invention relates to a system for annotating car radar data, comprising: at least one radar arranged on a car for producing a radar image by means of radar measurement; at least one optical detection system arranged outside the car for producing a camera image; a segmentation unit, which is designed to subject a camera image produced by the optical detection system to semantic segmentation for forming a semantic grid in order to assign one of a plurality of object classes to the camera image pixel by pixel; a computing unit, which is designed to transfer the camera image and/or the radar image into a common coordinate system for co-registration; and an annotation unit, which is designed to carry out annotation of the radar image, in other words to allocate an object class to a radar target of the radar image, in such a way that the object class of the semantic grid of the co-registered camera image in which the radar target of the co-registered radar image is located is allocated to a particular radar tar

Abstract: A system for creating an adjustable delay in an optical signal. The system has an input interface for receiving an optical input signal. The system has a first optical modulator configured to shift the frequency of the optical input signal depending on a setting of the first optical modulator, thereby generating a modulated optical signal. The system includes at least two frequency selective reflectors configured to reflect the modulated optical signal, thereby providing a reflected signal. The system has a control circuit that adapts the setting of the first optical modulator such that a frequency shift of the optical input signal introduced by the first optical modulator is set by the control circuit. The frequency shift introduced by the first optical modulator corresponds to an operational frequency of one of the at least two frequency selective reflectors associated with the setting of the first optical modulator.

Abstract: A method for signal processing of radar signals of a radar system (100) has at least two radar units (10, 20) arranged at a known distance from one another. At least one spatial field of vision (FoV) of the radar system (100) is captured with radar signals of the at least two radar units (10, 20). A discrete total coordinate system is generated from the field of vision (FoV). Measurement data of the at least two radar units (10, 20) of the radar system (100) generated by the detection of the field of vision (FoV) are co-registered. A multidimensional, vector velocity ({right arrow over (v)}) for at least one resolution cell of the discrete total coordinate system and/or a multidimensional, vector velocity ({right arrow over (v)}100) for the radar system (100) are generated.

Abstract: A method for compensating for noise in a secondary radar system is described. The method includes, using a first transceiver, transmitting, in temporally overlapping manner, a first transmission signal containing a first interfering component and a second transmission signal containing a second interfering component, and compensating for at least one of phase shifts or frequency shifts resulting from the first and second interfering components by evaluation of the first and second transmission signals.

Abstract: Phase noise compensation can be performed in a primary radar system, such as in transceiver hardware. A first reflected reception signal can be received, corresponding to a reflection of a first transmission signal from an object, and a first measurement signal can be generated using mixing or correlation of the first reflected reception signal and the first transmission signal. A second measurement signal can be similarly generated from a second transmission signal and a second reflected reception signal. The first and second measurement signals include respective components including complex conjugate representations of each other. The components correspond to interfering components associated with phase noise, and such respective components can cancel each other to suppress phase noise.

Abstract: A LIDAR target simulation system for testing a LIDAR device is described. The LIDAR target simulation system includes a scenario generation circuit, a pattern detection circuit, a LIDAR simulation circuit, and a signal response generator circuit. The scenario generation circuit is configured to generate a test scenario for testing the LIDAR device. The pattern detection circuit is configured to receive at least one scan signal generated by the LIDAR device to be tested. The pattern detection circuit further is configured to determine at least one characteristic parameter of the received scan signal. The LIDAR simulation circuit is configured to simulate at least one current and/or future scan signal of the LIDAR device based on the at least one characteristic parameter. The signal response generator circuit is configured to generate a response signal to be received by the LIDAR device based on the at least one simulated scan signal of the LIDAR device and based on the test scenario.

Abstract: A system for creating an adjustable delay in an optical signal. The system has an input interface for receiving an optical input signal. The system has a first optical modulator configured to shift the frequency of the optical input signal depending on a setting of the first optical modulator, thereby generating a modulated optical signal. The system includes at least two frequency selective reflectors configured to reflect the modulated optical signal, thereby providing a reflected signal. The system has a control circuit that adapts the setting of the first optical modulator such that a frequency shift of the optical input signal introduced by the first optical modulator is set by the control circuit. The frequency shift introduced by the first optical modulator corresponds to an operational frequency of one of the at least two frequency selective reflectors associated with the setting of the first optical modulator.

Abstract: The invention relates to a locating method for localizing at least one object using wave-based signals, wherein a wave field emanates from the object to be localized and the wave field emanating from the object is received by a number N of receivers, at least one measurement signal is formed in every receiver, said measurement signal being dependent on the spatial and temporal distribution of the wave field and the phase progression of said measurement signal being characteristically influenced by the signal propagation time from the object to the receiver, wherein, for position locating, phase values for each of the at least two measurement signals are taken as measured phase values, and wherein the current position (P(k)) of the object to be located at the time k is determined by a comparison of at least one linear combination of the measured phase values with at least one linear combination of the associated hypothetical phase values, which result from the transmitter-receiver distance(s), and using a recu

Abstract: The invention describes a method for reducing interference effects in a radar system, which has at least two transceiver units (S1, S2), which are in particular spatially separated from one another, wherein the method comprises the following steps: —a transmission step (VS1), in which a first transmission signal (sigTX1) of the first transceiver unit (S1) is sent and received to and by a second transceiver unit (S2) and a second transmission signal (sigTX2) of the second transceiver unit (S2) is sent and received to and by the first transceiver unit (S1) via a radio channel (T), wherein the transmission signals (sigTX1, sigTX2) are modulated according to an orthogonal frequency multiplex method; and—a pre-correction step (VS2), in which correction values (?1, ?n, ?2) are determined from the received transmission signals (sigTX1, sigTX2) and in particular are exchanged between the transceiver stations (S1, S2), wherein the received transmission signals (sigRX1, sigRX2) are postprocessed on the basis of the cor

Abstract: A system for creating an adjustable delay in an optical signal. The system has an input interface for receiving an optical input signal. The system has a first optical modulator configured to shift the frequency of the optical input signal depending on a setting of the first optical modulator, thereby generating a modulated optical signal. The system includes at least two frequency selective reflectors configured to reflect the modulated optical signal, thereby providing a reflected signal. The system has a control circuit that adapts the setting of the first optical modulator such that a frequency shift of the optical input signal introduced by the first optical modulator is set by the control circuit. The frequency shift introduced by the first optical modulator corresponds to an operational frequency of one of the at least two frequency selective reflectors associated with the setting of the first optical modulator.

Abstract: The invention relates to a radar system, particularly a primary radar system, comprising at least one signal generating device (SGEN), which is configured to generate and to emit a transmit signal sequence, at least one signal detection device, which is configured to receive and to detect a receive signal sequence reflected on an object structure, at least one mixer (MIX) for mixing the receive signal sequence with the transmit signal sequence and for forming N baseband signals sb(n, t), where n=1 . . . N, and at least one scanning device (ADC), which is configured to scan the N baseband signals at scanning frequencies fs(n), wherein at least two, preferably at least three, further preferably all of the N scanning frequencies fs(n) differ from each other.

Abstract: A radar method, in particular a primary radar method, in which at least one first and at least one second transceiver unit (S1, S2), which are in particular spatially separated from one another, and transmit and receive signals simultaneously or overlapping in time, wherein a respective comparison signal, in particular mixed signals s1k,mix(t) or s2k,mix(t) are formed from a signal transmitted and received by the respective transceiver unit, wherein a phase correction is formed for each of a plurality of sample values, preferably a phase correction value for each of a plurality of sample values from the comparison signals s1k,mix(t) or s2k,mix(t), in particular in such a way that, preferably by a mathematical operation, a measure is formed of a phase difference per sample value between the at least two signals s1k,mix(t) or s2k,mix(t).

Abstract: A system for creating an adjustable delay in an optical signal. The system has an input interface for receiving an optical input signal. The system has a first optical modulator configured to shift the frequency of the optical input signal depending on a setting of the first optical modulator, thereby generating a modulated optical signal. The system includes at least two frequency selective reflectors configured to reflect the modulated optical signal, thereby providing a reflected signal. The system has a control circuit that adapts the setting of the first optical modulator such that a frequency shift of the optical input signal introduced by the first optical modulator is set by the control circuit. The frequency shift introduced by the first optical modulator corresponds to an operational frequency of one of the at least two frequency selective reflectors associated with the setting of the first optical modulator.

Abstract: Transmitting-receiving devices, such as within a radar system, can use a clock generator from which various higher-frequency signals are derived. For example, respective transmitting-receiving devices can include high-frequency (HF) generators. The present subject matter concerns a system and a method for providing measurement signals having increased coherence as compared with signals originally transmitted by the transmitting-receiving devices. Such measurement signals can be exchanged for synchronization. Increased coherence can enhance overall system performance, such as to assist in separating returns associated with weaker targets from those associated with stronger targets, or to provide enhanced angular resolution, as illustrative examples.

Abstract: A radar target simulator for simulating radar targets is provided. The radar target simulator has an analogue-to-digital converter having a first clock generator and a digital-to-analogue converter having a second clock generator. The analogue-to-digital converter is configured to receive a radar signal transmitted by a radar system as an input signal, while the digital-to-analogue converter is configured to return an output signal to the radar system for simulation of the radar target. Further, the first and the second clock generator are configured to operate the analogue-to-digital converter and the digital-to-analogue converter at a different sampling rate in each case.

Abstract: The invention relates to a radar method for exchanging signals between at least two non-coherent transceiver units which respectively have initially non-synchronous, in particular controllable, clock sources, having the following steps: a synchronization in which clock offsets and/or clock rates of the clock sources of the at least two transceiver units are adapted; a full-duplex measuring process in which a first transmission signal of the first transceiver unit is transmitted to the second transceiver unit and a second transmission signal of the second transceiver unit is transmitted to the first transceiver unit via a radio channel; with synchronization prior to the full-duplex measuring process being carried out in such a way that a time offset and/or a frequency offset between the transmission signals at least substantially remain(s) constant during a transmission time of the full-duplex measuring process.

Abstract: The invention relates to a radar system for capturing surroundings of a moving object, in particular a vehicle and/or a transportation apparatus, such as a crane, in particular, wherein the system is mounted or mountable on the moving object, wherein the radar system comprises at least two non-coherent radar modules (RM 1, RM 2, . . . RM N) having at least one transmitter antenna and at least one receiver antenna, wherein the radar modules (RM 1, RM 2, . . . RM N) are arranged or arrangeable in distributed fashion on the moving object, wherein provision is made of at least one evaluation device which is configured to process transmitted and received signals of the radar modules to form modified measurement signals in such a way that the modified measurement signals are coherent in relation to one another.