Symeo Gmbh

Siemens Aktiengesellschaft

Rohde and Schwarz Gmbh & Co. Kg

Enocean Gmbh

Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Friedrich-Alexander-Universitat Erlangen-Nürnberg

Martin Vossiek

Peter Gulden

Patric Heide

Michael Gottinger

Peter-Christian Eccardt

Frank Schmidt

Claus Seisenberger

Martin Nalezinski

Wolf-Eckhart Bulst

Oliver Sczesny

Richard Roskosch

Fabian Kirsch

Christian Carlowitz

Valentin Magori

Klaus Pistor

Johannes Ilg

Benedikt Simper

Eckhard Storck

Andre Albsmeier

Wolfgang Piesch

Julian Adametz

Mark Christmann

Klause Hofbeck

Peter Tschapek

Nils Kroemer

Stephan Max

Sherif Sayed Ahmed

Thomas Scheiter

Leonhard Michael Reindl

Andreas Maier

Gisela Anton

Tobias Schoen

Leif Wiebking

Kurt Niederer

Wolfgang Holub

Daniel Stromer

Georg Körner

Maximilian Poepperl

Yassen Dobrev

Melanie Lipka

Erik Sippel

Thomas K&ouml;lpin

Bernhard Kreppold

Stefan Lechner

Nils Kromer

Robert Prophet

Marcel Hoffmann

Michael Stelzig

Christoph Mammitzsch

Mike Keaveney

Andreas Hofmann

Michel Thilo

Igor Bilous

Jan Schuer

Sven Röhr

Maximilian PÖPPERL

Martin Schütz

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 s(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.

Radar system and procedures for operating a radar system

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 target.

System and method for annotating car radar data

The invention describes a method for reducing interference effects in a radar system, which has at least two transceiver units (S, S), which are in particular spatially separated from one another, wherein the method comprises the following steps: —a transmission step (VS), in which a first transmission signal (sigTX) of the first transceiver unit (S) is sent and received to and by a second transceiver unit (S) and a second transmission signal (sigTX) of the second transceiver unit (S) is sent and received to and by the first transceiver unit (S) via a radio channel (T), wherein the transmission signals (sigTX, sigTX) are modulated according to an orthogonal frequency multiplex method; and—a pre-correction step (VS), in which correction values (γ1, γn, γ2) are determined from the received transmission signals (sigTX, sigTX) and in particular are exchanged between the transceiver stations (S, S), wherein the received transmission signals (sigRX, sigRX) are postprocessed on the basis of the correction values (γ1, γn, γ2), so that influences of interference variables, in particular of phase noise and/or a time offset and/or unknown initial phase positions, are reduced.

Method for reducing interference effects in a radar system

A radar method comprising transmitting and receiving signals simultaneously or overlapping in time by spatially separated transceiver units. Comparison signals are formed from transmitted and received signals by respective transceiver units. A phase correction is formed for each of a plurality of sample values, to generate a measure of phase difference per sample value between the comparison signals. A measure of phase difference is used to improve accuracy of distance or velocity measurements between the transceiver units. A radar system includes transceiver units and an evaluation unit configured to perform the method.

Radar method and radar system

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.

Method and device for non-coherent distributed full-duplex transmission radar systems

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, RM, . . . RM N) having at least one transmitter antenna and at least one receiver antenna, wherein the radar modules (RM, RM, . . . 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.

Method and apparatus for capturing the surroundings

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. The system has an output fiber that receives the reflected signal from the corresponding frequency selective reflector.

System for creating an adjustable delay

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.

Method and device for compensating for interfering influences

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.

Method and device for compensating for phase noise

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 recursive filter/estimator.

Locating method for localizing at least one object using wave-based signals and locating system

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.

Radar system and method for operating a radar system

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.

Radar target simulator and method for radar target simulation

A method serves for imaging polarimetry. A chipless, passive transponder which has a plurality of surface regions with different polarimetric properties is illuminated fully polarimetrically by radar radiation. At least one polarization-encoded image of the transponder is generated using the radar radiation reflected thereby, and the different surface regions of the transponder in the polarization-encoded image can be recognized by their at least one polarimetric property. The passive, chipless transponder has at least two surface regions with different polarimetric structures.

Method for performing imaging polarimetry, transponder, and system for performing imaging polarimetry

The invention refers to a system for analyzing a document. Each of two measurement arrangements includes two components being a radiation source and a radiation detector, respectively. The two measurement arrangements provide measurement data and differ from each other with regard to a measurement principle, a kind of radiation source, a kind of radiation detector, a kind of relative movement between the document and a component, a kind of relative arrangement of the two components to each other, a kind of emitted radiation, a kind of received radiation or a kind of processing information about radiation emitted by the respective radiation source and/or about radiation received by the respective radiation detector. An evaluator provides data based on the measurement data. The invention also refers to a corresponding method.

System for analyzing a document and corresponding method

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Hildesheim, Germany

Martin Vossiek