DOA Finding with Support Vector Regression Based Forward-Backward Linear Prediction

• Published in: Sensors (Basel, Switzerland) Vol. 17; no. 6; p. 1225
• Main Authors: Pan, Jingjing, Wang, Yide, Le Bastard, Cédric, Wang, Tianzhen
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 27-05-2017; MDPI
• Subjects: Coherence; coherent signals; Computer simulation; Direction of arrival; direction-of-arrival (DOA); Electronics; Engineering Sciences; forward–backward linear prediction (FBLP); Linear prediction; low snapshots; Signal processing; Support vector machines; support vector regression (SVR); coherent signals; low snapshots; support vector regression (SVR); direction-of-arrival (DOA); forward–backward linear prediction (FBLP); prediction (FBLP); forward-backward linear
• ISSN: 1424-8220; 1424-8220
• DOI: 10.3390/s17061225

Direction-of-arrival (DOA) estimation has drawn considerable attention in array signal processing, particularly with coherent signals and a limited number of snapshots. Forward-backward linear prediction (FBLP) is able to directly deal with coherent signals. Support vector regression (SVR) is robust with small samples. This paper proposes the combination of the advantages of FBLP and SVR in the estimation of DOAs of coherent incoming signals with low snapshots. The performance of the proposed method is validated with numerical simulations in coherent scenarios, in terms of different angle separations, numbers of snapshots, and signal-to-noise ratios (SNRs). Simulation results show the effectiveness of the proposed method.