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Radar system and method for operating radar system

A radar system and radar technology, applied in the field of radar systems, can solve problems such as inapplicability and inapplicability of SAR analysis and processing to moving targets, and achieve the effects of good angular resolution, improved angular resolution and angular accuracy

Pending Publication Date: 2022-03-11
ROBERT BOSCH GMBH
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Problems solved by technology

[0014] Conversely, SAR analysis processing is not suitable for moving targets and not for targets in the direction of travel

Method used

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  • Radar system and method for operating radar system
  • Radar system and method for operating radar system
  • Radar system and method for operating radar system

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Embodiment Construction

[0046] figure 1 A schematic block diagram of a radar system 1 for a motor vehicle is shown. The radar system includes a transceiver device 2 . In particular, the transceiver device can also be configured as a MIMO system. The transceiver 2 has a real aperture. This is to be understood as meaning that the transmitter-receiver 2 generates radar measurement signals or sensor data, which can be evaluated on the basis of conventional (ie not based on SAR methods) methods in order to find, inter alia, Angle estimate.

[0047] The sensor data are transmitted to the evaluation device 4 . The evaluation device 4 includes, for example, a microprocessor, an integrated circuit, etc., in order to evaluate the radar measurement signal. By means of conventional methods (such as FMCW method, fast chirp method, MIMO method, etc.), the first angle estimation value is generated. The first angle estimate describes at least one angle for an object at which radar radiation is reflected. Here...

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Abstract

The invention relates to a radar system for a motor vehicle, comprising a transceiver device and an evaluation device. The invention relates to a transmitter-receiver device having a real aperture, which is designed to emit radar radiation, to receive reflected radar radiation, and to generate a radar measurement signal. The evaluation device is designed to calculate at least one first angle estimate for the object reflecting the radar radiation on the basis of the real aperture using the generated radar measurement signal. Furthermore, the evaluation device is designed to calculate at least one second angle estimate for the object by means of a synthetic aperture radar algorithm using motion information relating to a motion of the radar system and using the generated radar measurement signal. Finally, the evaluation device is designed to fuse the at least one first angle estimate with the at least one second angle estimate. The invention also relates to a method for operating a radar system.

Description

technical field [0001] The invention relates to a radar system for a motor vehicle and a method for operating a radar system for a motor vehicle. Background technique [0002] In the motor vehicle sector, radar systems for measuring distances, relative speeds and angles of objects such as vehicles and obstacles are used for safety and comfort functions. An exemplary radar device is known for this purpose from DE 10 2015 218 538 A1. [0003] For this purpose, in particular the application of radar devices with a synthetic aperture (English: synthetic aperture radar, SAR, synthetic aperture radar) in the automotive field is being investigated. "SAR sensor" means a radar sensor that obtains angular information from Doppler measurements. SAR systems are described in "Synthetic aperture radar algorithm for a global amplitude map" by Harrer et al. (14th Workshop on Positioning, Navigation and Communications (WPNC), Bremen, 2017, pp. 1-6). Other applications are known from "Appl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/931G01S13/90G01S13/42
CPCG01S13/931G01S13/90G01S13/42G01S13/34G01S13/44G01S13/584
Inventor G·哈科拜恩J·芬克
Owner ROBERT BOSCH GMBH
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