학술논문
Flexible Extended Nested Array with Multiple Subarrays Achieving Improved Degrees of Freedom
Document Type
Conference
Author
Source
2022 30th European Signal Processing Conference (EUSIPCO) European Signal Processing Conference (EUSIPCO), 2022 30th. :1931-1935 Aug, 2022
Subject
Language
ISSN
2076-1465
Abstract
This paper proposes a new extended nested array geometry with enhanced degrees of freedom (DOF) and a hole-free difference co-array. The proposed flexible extended nested with multiple subarrays (f-ENAMS) configuration is constructed by splitting the dense subarray of the nested array (NA) into four subarrays and relocating them on either side of the NA configuration to maximize the DOF. Several conditions are provided for a specific design to guarantee the continuity of the difference coarray (DCA). Compared to other sparse arrays, f-ENAMS offers improved DOF, which leads to high-resolution DOA estimation. Simulation examples are presented to demonstrate the superiority of the proposed f-ENAMS array configuration.