Abstract: 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.

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 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 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: 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: 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 method is described in particular for reducing interference due to phase noise in a radar system, in which in a first noncoherent transceiver unit (NKSE1) a first signal (sigTX1) is generated and transmitted, in particular emitted, via a path (SP), in a further, in particular second noncoherent transceiver unit (NKSE2), a first signal (sigTX2) is generated and transmitted, in particular emitted, via the path (SP), the signals (sigTX1 and sigTX2) are received directly or indirectly in the respective other transceiver unit and are processed further therein as received signals sigRX12 and sigRX21, in the first transceiver unit (NKSE1), a comparison signal (sigC12) is formed from its first signal (sigTX1) and from such a first signal (sigRTX2) received from the further transceiver unit (NKSE2) via the path (SP), and in the further transceiver unit (NKSE2), a further comparison signal (sigC21) is formed from its first signal (sigTX2) and from such a first signal (sigTX1) received from the first transceiver unit

Abstract: The invention relates to a radar method for determining the angular position, the location, and/or the velocity, in particular the vectorial velocity, of a target, wherein a first transceiver unit and at least one second transceiver unit, which is spatially separated in particular from the first transceiver unit, are not synchronized, but a measurement beginning of the first transceiver unit and the second transceiver unit is triggered in a wireless or wired manner with a chronological deviation ?tn, wherein measurements of the transceiver units are coherently processed.

Abstract: Method for compensating for noise, in particular phase noise, in a primary radar system, wherein a first transmission signal with a first interfering component caused by the noise is transmitted by a transceiving unit, wherein at least one second transmission signal with a second interfering component caused by the noise is transmitted at the same time as or in a manner temporally overlapping the first transmission signal by the transceiving unit, wherein the transmission signals are such that, if the transmission signals are processed further and evaluated, phase and/or frequency shifts resulting from the interfering components are at least partially compensated for.

Abstract: The invention relates to a method for compensating for noise, in particular phase noise, in a radio location system, comprising a first and a second non-coherent transceiving unit, wherein a first measurement signal (sm1(t)) and at least one second measurement signal (sm2(t)) are generated on the basis of signals transmitted by the first transceiving unit and received by the first transceiving unit, wherein a first frequency shift in the first measurement signal (sm1(t)) which is caused by noise, in particular phase noise, is opposite, in particular exactly opposite, a second frequency shift in the second measurement signal (sm2(t)) which is caused by the noise, in particular phase noise.

Abstract: The invention relates to a radar system comprising: —at least a first (SE1) and a second (SE2) transmitting-receiving device with in each case at least one transmitting antenna and at least one receiving antenna as well as a HE generator, and —a common clock generator for the HF generators of the transmitting-receiving devices, wherein at least one evaluation device is provided, which is configured to process transmitting, and receiving signals of the transmitting-receiving, devices (SE1, SE2) to modified measurement signals with increased coherence.

Abstract: The invention relates to a radar method for determining the angular position, the location, and/or the velocity, in particular the vectorial velocity, of a target, wherein a first transceiver unit and at least one second transceiver unit, which is spatially separated in particular from the first transceiver unit, are not synchronized, but a measurement beginning of the first transceiver unit and the second transceiver unit is triggered in a wireless or wired manner with a chronological deviation ?tn, wherein measurements of the transceiver units are coherently processed.