US 12,241,921 B2
Apparatus comprising at least one processor
Silvio Mandelli, Ludwigsburg (DE); and Jinfeng Du, West Windsor, NJ (US)
Assigned to NOKIA SOLUTIONS AND NETWORKS OY, Espoo (FI)
Filed by NOKIA SOLUTIONS AND NETWORKS OY, Espoo (FI)
Filed on Jan. 31, 2023, as Appl. No. 18/103,769.
Claims priority of application No. 20225100 (FI), filed on Feb. 4, 2022.
Prior Publication US 2023/0251294 A1, Aug. 10, 2023
Int. Cl. G01R 33/36 (2006.01); G01R 29/08 (2006.01)
CPC G01R 29/0892 (2013.01) 14 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
at least one processor; and
at least one memory storing instructions, the at least one memory and the instructions configured to, with the at least one processor, cause the apparatus to sample an angular response of a uniform antenna array uniformly in a normalized angular frequency range to obtain a set (SET-SAMP) of angular samples, to reconstruct an angular response (ANG-RESP) of the uniform antenna array based on the set (SET-SAMP) of angular samples and at least one Dirichlet kernel (DIR-KERN), wherein the normalized angular frequency range is characterized by

OG Complex Work Unit Math
wherein ϕ is a normalized angular frequency, wherein θ characterizes an angle between a boresight direction (BD) and a target direction (TD), to determine if the number N of antenna elements of the uniform antenna array is even, and, upon determining that the number N is even, to double a sequence length associated with the set (SET-SAMP) of angular samples to obtain an extended set (SET-SAMP′) of angular samples.