Title:
RADAR ANGLE CALIBRATION SYSTEM, RADAR CHIP, AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/237920
Kind Code:
A3
Abstract:
Disclosed are a radar angle calibration system, a radar chip, and a device. The radar angle calibration system comprises: a radar simulator (30), a transmitting horn antenna (40), a receiving horn antenna (50), a turntable (20) and a controller. A radar (10) is provided on the turntable (20) and rotates along with rotation of the turntable (20). The receiving horn antenna (50) and the transmitting horn antenna (40) are both connected to the radar simulator (30) by means of a waveguide. The radar (10) transmits a signal. The receiving horn antenna (50) receives the transmitted signal of the radar (10), and transmits the transmitted signal to the radar simulator (30) by means of the waveguide. The radar simulator (30) simulates, according to the received signal, an echo signal, and transmits the echo signal to the transmitting horn antenna (40) by means of the waveguide. The transmitting horn antenna (40) transmits the echo signal so that the echo signal is received by the radar (10). The controller, by means of the turntable (20), gradually changes the angle of the transmitted signal at a preset angle step length, so as to obtain a spatial response of a receiving antenna array corresponding to a signal source in different directions of arrival. By obtaining, according to the spatial response corresponding to the signal source in different directions of arrival, a spatial response matrix of the receiving antenna array, the radar angle can be accurately calibrated.
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Inventors:
ZHANG YANQUN (CN)
ZHU YAN (CN)
ZHU YAN (CN)
Application Number:
PCT/CN2022/112803
Publication Date:
January 05, 2023
Filing Date:
August 16, 2022
Export Citation:
Assignee:
CALTERAH SEMICONDUCTOR TECH SHANGHAI CO LTD (CN)
International Classes:
G01S7/40; G01S7/02
Domestic Patent References:
| WO2019118013A1 | 2019-06-20 |
Foreign References:
| CN112578358A | 2021-03-30 | |||
| CN112526469A | 2021-03-19 | |||
| CN106597399A | 2017-04-26 | |||
| CN111273244A | 2020-06-12 | |||
| CN110673102A | 2020-01-10 | |||
| CN111190135A | 2020-05-22 | |||
| CN112198485A | 2021-01-08 | |||
| CN109633577A | 2019-04-16 |
Attorney, Agent or Firm:
SHANGHAI CHENHAO INTELLECTUAL PROPERTY LAW FIRM GENERAL PARTNERSHIP (CN)
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