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

Claim 3:
4. The method according to claim 3, wherein establishing the equation set with the sin θ cos ϕ, the sin θ sin ϕ and the cos θ as unknowns comprises:
determining a first difference value, a second difference value and a third difference value, according to 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; and establishing the equation set with the sin θ cos ϕ, the sin θ sin ϕ and the cos θ as unknowns, according to the first signals, the second signals, the third signals, the fourth signals, the first difference value, the second difference value and the third difference value;
wherein, the first difference value is a difference value between the difference between the phase centers after the first change and the difference between the phase centers before the first change, the second difference value is a difference value between the difference between the phase centers after the second change and the difference between the phase centers before the first change, and the third difference value is a difference value between the difference between the phase centers after the third change and the difference between the phase centers before the first change;
or, the first difference value is a difference value between the difference between the phase centers before the first change and the difference between the phase centers after the first change, the second difference value is a difference value between the difference between the phase centers after the second change and the difference between the phase centers after the first change, and the third difference value is a difference value between the difference between the phase centers after the third change and the difference between the phase centers after the first change;
or, the first difference value is a difference value between the difference between the phase centers before the first change and the difference between the phase centers after the second change, the second difference value is a difference value between the difference between the phase centers after the first change and the difference between the phase centers after the second change, and the third difference value is a difference value between the difference between the phase centers after the third change and the difference between the phase centers after the second change;
or, the first difference value is a difference value between the difference between the phase centers before the first change and the difference between the phase centers after the third change, the second difference value is a difference value between the difference between the phase centers after the first change and the difference between the phase centers after the third change, and the third difference value is a difference value between the difference between the phase centers after the second change and the difference between the phase centers after the third change.