公开(公告)号：US11181605B2

公开(公告)日：2021-11-23

申请号：US16620410

申请日：2018-05-30

Applicant: THALES

Inventor： Benoît Gorisse ,  Daniel Jahan ,  Cédric Cornu

IPC: G01S3/74 ,  G01R23/18 ,  G01S3/04 ,  H04B7/08

Abstract: The invention relates to a method and a device for estimating an angle of arrival of an incident radio signal in relation to a predetermined reference direction by using a set of N receiving paths comprising at least one directional antenna pointing in N different receiving directions, wherein only one sub-set of at least two receiving paths with adjacent antenna directions in said set of antennas delivers a measured power at reception.
The device comprises modules suitable for: determining a number of receiving paths delivering a measured power forming said sub-set, and a reference index corresponding to a first receiving path in a direction in which extends the set of antenna directions of said sub-set; selecting the measured powers and obtaining a value to attribute to the non-measured powers to form a completed power signal; by applying a discrete Fourier transform (DFT) to said completed power signal, calculating at least one transformed value among the transformed values corresponding to a first, second, and third frequency line of the DFT; and, using the transformed value(s), applying an estimator of the angle of arrival, depending on the reference index.