Patent ID: 9411035
Filing Date: 2016-08-09
CPC Classification: G01S

Claim Text:
1. A method for angle estimation verification, adapted to an electronic apparatus having an angle estimator, at least three antennas, and an angle verification unit, wherein the method comprises: extracting an estimated angle by the angle verification unit, wherein the estimated angle is calculated by and extracted from the angle estimator; generating an autocorrelation matrix by the angle verification unit according to a signal vector formed by a plurality of measurements of a received signal received by each of the antennas so as to obtain a plurality of eigenvalues; calculating a plurality of possible estimated angles corresponding to first phase difference data among phase difference data generated by a plurality of antenna groups by the angle verification unit, wherein the antenna groups are formed by all different combinations of two of the antennas, wherein each of the phase difference data is a phase difference of the received signal received by each of the antenna groups, wherein each of the first phase difference data is the phase difference data not caused by a coterminal angle effect; determining whether the received signal corresponds to a single target or multiple targets by the angle verification unit according to the eigenvalues and the possible estimated angles so as to verify the reliability of the estimate angle; and notifying the angle estimator to recalculate the estimated angle by the angle verification unit when the estimated angle is determined unreliable.