3D-Subspace-Based Auto-Paired Azimuth Angle, Elevation Angle, and Range Estimation for 24G FMCW Radar with an L-Shaped Array

HyungSoo Nam; Ying-Chun Li; ByungGil Choi; Daegun Oh

doi:10.3390/s18041113

3D-Subspace-Based Auto-Paired Azimuth Angle, Elevation Angle, and Range Estimation for 24G FMCW Radar with an L-Shaped Array

Sensors (Basel). 2018 Apr 5;18(4):1113. doi: 10.3390/s18041113.

Authors

HyungSoo Nam¹, Ying-Chun Li², ByungGil Choi³, Daegun Oh⁴

Affiliations

¹ Collaborative Robots Research Center, Daegu Gyeongbuk Institute of Science and Technology, Daegu 42988, Korea. hsnam@dgist.ac.kr.
² Department of Electronic Engineering, Hanyang University, Seoul 04763, Korea. davis.y.lee@hotmail.com.
³ Collaborative Robots Research Center, Daegu Gyeongbuk Institute of Science and Technology, Daegu 42988, Korea. choibk@dgist.ac.kr.
⁴ Collaborative Robots Research Center, Daegu Gyeongbuk Institute of Science and Technology, Daegu 42988, Korea. dgoh@dgist.ac.kr.

Abstract

In this paper, a three-dimensional (3D)-subspace-based azimuth angle, elevation angle, and range estimation method with auto-pairing is proposed for frequency-modulated continuous waveform (FMCW) radar with an L-shaped array. The proposed method is designed to exploit the 3D shift-invariant structure of the stacked Hankel snapshot matrix for auto-paired azimuth angle, elevation angle, and range estimation. The effectiveness of the proposed method is verified through a variety of experiments conducted in a chamber. For the realization of the proposed method, K-band FMCW radar is implemented with an L-shaped antenna.

Keywords: 3D subspace; FMCW; L-shaped array.