All-Directional DOA Estimation for Ultra-Wideband Regular Tetrahedral Array Using Wrapped PDoA

Jinglin Luo; Jingjing Zhang; Haidong Yang; Yisheng Guan

doi:10.3390/s22041532

All-Directional DOA Estimation for Ultra-Wideband Regular Tetrahedral Array Using Wrapped PDoA

Sensors (Basel). 2022 Feb 16;22(4):1532. doi: 10.3390/s22041532.

Authors

Jinglin Luo^{1

2}, Jingjing Zhang³, Haidong Yang^{1

2}, Yisheng Guan⁴

Affiliations

¹ Foshan Nanhai Guangdong Technology University CNC Equipment Cooperative Innovation Institute, Foshan 528225, China.
² School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510006, China.
³ School of Mechatronic Engineering and Automation, Foshan University, Foshan 528000, China.
⁴ Biomimetic and Intelligent Robotics Lab (BIRL), Guangdong University of Technology, Guangzhou 510006, China.

Abstract

In this paper, we proposed a Regular Tetrahedral Array (RTA) to cope with various types of sensors expected in Ultra-Wideband (UWB) localization requiring all-directional detection capability and high accuracy, such as indoor Internet-of-Things (IoT) devices at diverse locations, UAVs performing aerial navigation, collision avoidance and takeoff/landing guidance. The RTA is deployed with four synchronized Ultra-Wideband (UWB) transceivers on its vertexes and configured with arbitrary aperture. An all-directional DOA estimation algorithm using combined TDoA and wrapped PDoA was conducted. The 3D array RTA was decomposed into four planar subarrays solved as phased Uniform Circular Array (UCA) respectively. A new cost function based on geometric identical and variable neighborhood search strategy using TDoA information was proposed for ambiguity resolution. The results of simulation and numerical experiments demonstrated excellent performance of the proposed RTA and corresponding algorithm.

Keywords: DOA estimation; regular tetrahedral array; ultra-wideband; wrapped PDoA.