Angle Estimating Method and Radar System
AssigneeWistron Neweb Corp.
InventorsChi-Cheng Kuo, Hsin-Lung Hsiao, Jeng-Da Li
Life of this patent
Estimating the term…
Abstract
An angle estimating method applied in a radar system includes receiving a first signal and a second signal reflected from a target object via a first antenna and a second antenna; obtaining a first phase difference and at least one virtual phase difference, where the first phase difference is a phase difference between the first antenna and the second antenna; and obtaining a direction of arrival (DOA) of the target object according to the first phase difference and the at least one virtual phase difference.
Claims20
An angle estimating method, applied in a radar system, the angle estimating method comprising:
- receiving a first signal and a second signal reflected from a target object via a first antenna and a second antenna;
- obtaining a first phase difference and at least one virtual phase difference according to the first signal and the second signal, wherein the first phase difference is a phase difference between the first antenna and the second antenna;
- and
- obtaining a direction of arrival (DOA) of the target object according to the first phase difference and the at least one virtual phase difference.
A radar system, comprising:
- a first antenna, configured to receive a first signal reflected from a target object;
- a second antenna, configured to receive a second signal reflected from the target object;
- a processing unit, coupled to the first antenna and the second antenna;
- and
- a storage unit, configured to store a program code, the program code instructing the processing unit to perform following steps:
- obtaining a first phase difference and at least one virtual phase difference according to the first signal and the second signal, wherein the first phase difference is a phase difference between the first antenna and the second antenna, and the at least one virtual phase difference is phase difference between the first antenna and at least one virtual antenna;
- and
- obtaining a direction of arrival (DOA) of the target object according to the first phase difference and the at least one virtual phase difference.
A radar system, comprising:
- a first antenna, configured to receive a first signal reflected from a target object;
- a second antenna, configured to receive a second signal reflected from the target object;
- a phase difference computing unit, configured to obtain a first phase difference and at least one virtual phase difference according to the first signal and the second signal, wherein the first phase difference is a phase difference between the first antenna and the second antenna, and the at least one virtual phase difference is phase difference between the first antenna and at least one virtual antenna;
- and
- a direction of arrival (DOA) computing unit, configured to obtain a DOA of the target object according to the first phase difference and the at least one virtual phase difference.
Dependencies are inferred from the claim text.