Patent ID: 11949488
Assignee: ZTE CORPORATION
Field: Telecommunications (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 2:
3. The method according to claim 2, wherein estimating the DOA of the receiving signal comprises:
establishing an equation set with sin θ cos ϕ, sin θ sin ϕ and cos θ as unknowns, according to the first signals, the second signals, the third signals and the fourth signals received by the two analog subarrays, the difference between the phase centers before the first change, the difference between the phase centers after the first change, the difference between the phase centers after the second change and the difference between the phase centers after the third change, wherein the θ is a zenith angle of the DOA, the ϕ is an azimuth of the DOA; obtaining the sin θ cos ϕ, the sin θ sin ϕ and the cos θ by solving the equation set; and calculating the θ and the ϕ according to the sin θ cos ϕ, the sin θ sin ϕ and the cos θ.