Patent ID: 11924705
Assignee: PSJ INTERNATIONAL LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 11:
12. A positioning method, comprising:
dispersedly arranging a plurality of receivers to form a target area, wherein each of the receivers includes:
the antenna device as claimed in claim 1;
a first wireless network interface controller connected to the difference output terminal; and
a second wireless network interface controller connected to the sum output terminal;

configuring the first wireless network interface controller to receive a wireless signal from the target area through the antenna device, and process an output signal of the difference output terminal to generate a difference signal strength;
configuring the second wireless network interface controller to receive the wireless signal from the target area through the antenna device, and process another output signal of the sum output terminal to generate a sum signal strength;
configuring a computing device to be communicatively connected to the receivers, wherein the computing device includes a processing module and a storage module; and
configuring the processing module to:
execute, for each of the plurality of receivers, following actions:
calculating a ratio between the sum signal strength and the difference signal strength to obtain a sum-difference ratio; and
estimating, according to the sum-difference ratio and a comparison table stored in the storage module, one of multiple estimated incident angles that correspond to the sum-difference ratio, wherein the comparison table defines a relationship between a plurality of ratios and a plurality of angles;

execute, in response to obtaining the estimated incident angles corresponding to the receivers, a positioning algorithm according to the estimated angles, so as to generate a plurality of possible positions; and
execute an optimization algorithm to calculate a best estimated position of the possible positions.