In-Sector Direction-of-Arrival Estimation Using a Switched Receive Array
Hamed Masoumi (TU Delft - Mechanical Engineering)
Paul Barend Groen (Student TU Delft)
Bein Frederik Jacob Kamminga (Student TU Delft)
Lars Jisse Hoogland (Student TU Delft)
Boele van Schaik (Student TU Delft)
Anniek Christine van der Veen (Student TU Delft)
Edoardo Focante (TU Delft - Mechanical Engineering)
Nitin Jonathan Myers (TU Delft - Mechanical Engineering)
More Info
expand_more
Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.
Abstract
Direction-of-arrival (DoA) estimation is a key operation in 5G radios, radars, and sonars. While large receive arrays enable high-resolution DoA estimates, their fully digital implementation consumes significant power. This paper demonstrates DoA estimation with a switched receive array, which consumes less power than its fully digital counterpart. The DoA is estimated in two stages. First, the sector in which the source lies is estimated by mechanically steering a wide beam. Then, the DoA within the identified sector is estimated electronically using our switched receive array. We formulate an integer program to optimize the configuration of switches at the receiver, resulting in low-aliasing artifacts within the identified sector. Using our custom 40 KHz ultrasound receive array, we demonstrate DoA estimation with our optimized switch configuration. Experiments and numerical results show that the error in the estimated DoA is smaller with our optimized switch configuration than with a randomly chosen configuration.
Files
File under embargo until 02-10-2026