Distributed radar system
A radar system, radar technology, applied in the field of radar systems
Pending Publication Date: 2022-06-24
NXP USA INC
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Problems solved by technology
Transmitting such signals over distances of a few centimeters without the use of waveguides is problematic due to the large amount of transmission loss
Method used
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Embodiment Construction
[0040] figure 1 A vehicle 100 with a distributed cooperative radar system is shown. The radar system includes a plurality of transceivers 101a-c positioned along the front portion of the vehicle. Other transceivers may be positioned around the sides or rear of the vehicle. Each transceiver has a respective field of view 102a-c that overlaps in overlapping regions 103a, 103b. Because the transceivers 101a-c are distributed in the space across the front of the vehicle 100, information from a wider field of view can be collected. If the transceivers are connected to operate cooperatively together, the angular resolution of the overall system can also be improved compared to individual transceivers that do not cooperate. However, this requires the transceivers 101a-c to be synchronized in both frequency and phase to allow combining the information from each transceiver.
[0041] Presented in this paper is a radar system that can be used to synchronize and transmit data in a co...
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The invention relates to a distributed radar system. The present disclosure relates to a radar system in which a plurality of radar transceivers are synchronized with a common clock signal. The radar system includes: a control module; a processing module; a plurality of radar transceivers; and a communication bus connecting the control module to one or more of the plurality of radar transceivers, where the control module is configured to generate a first clock signal and to transmit the first clock signal to one or more of the plurality of transceivers via the communication bus, and to receive radar data from the plurality of transceivers via the communication bus, wherein each of the plurality of transceivers is configured to generate a second clock signal extracted from the first clock signal and to transmit and receive frequency-synchronized radar signals based on the second clock signal, and wherein the processing module is configured to: calculate a phase difference between the frequency-synchronized radar signals; compensating the measured phase difference; and process the received radar signals from the plurality of transceivers.
Description
technical field [0001] The present disclosure relates to a radar system in which multiple radar transceivers are synchronized with a common clock signal. Background technique [0002] In current automotive radar systems, the radar aperture can be increased by cascading multiple transceivers to improve the angular resolution of the overall system. In order to process data from multiple transceivers coherently, both frequency and phase need to be synchronized. This can be achieved by distributing the high frequency local oscillator (LO) signal from the master transceiver to one or more slave transceivers. However, in radar systems, the LO signal is typically in the range of 10-100 GHz (eg, in the range of 25 to 40 GHz). Transmitting such signals over distances of a few centimeters without the use of waveguides is problematic due to substantial transmission losses. SUMMARY OF THE INVENTION [0003] According to a first aspect, a radar system is provided, comprising: [00...
Claims
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IPC IPC(8): G01S7/02G01S13/02H04J3/06
CPCG01S7/02G01S13/02H04J3/06G01S7/4008G01S13/003G01S13/4454G01S13/878G01S13/343G01S7/003G01S13/931G01S7/006G01S2013/93274G01S2013/93271G01S7/4017G01S7/028G01S7/4026G01S7/03
Inventor G·A·瓜尔林阿里斯蒂扎巴尔M·施泰格曼
Owner NXP USA INC