<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The major flaw of the conventional diagonal loading (DL) method is that it is unclear to choose appropriate DL levels or user-parameters (UPs), though several remarkable contributions have been made to regularize model errors without UPs. An UP-free algorithm for two-component vector-sensor arrays, which is robust to steering vector errors, is considered. The algorithm is within the hypercomplex framework using quaternions, and the optimal solution is found at the maximal correlation between the quaternionic and complex outputs. The performance of the proposed beamformer is illustrated via numerical simulations and is compared with several other UP-free adaptive beamformers</p></abstract>

The major flaw of the conventional diagonal loading (DL) method is that it is unclear to choose appropriate DL levels or user-parameters (UPs), though several remarkable contributions have been made to regularize model errors without UPs. An UP-free algorithm for two-component vector-sensor arrays, which is robust to steering vector errors, is considered. The algorithm is within the hypercomplex framework using quaternions, and the optimal solution is found at the maximal correlation between the quaternionic and complex outputs. The performance of the proposed beamformer is illustrated via numerical simulations and is compared with several other UP-free adaptive beamformers

User–Parameter–Free Robust Adaptive Beamforming Algorithm for Vector–Sensor Arrayswithin the Hypercomplex Framework

School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, People’s Republic of China

Journal of Electrical Engineering

The major flaw of the conventional diagonal loading (DL) method is that it is unclear to choose appropriate DL levels or user-parameters (UPs), though several...

User–Parameter–Free Robust Adaptive Beamforming Algorithm for Vector–Sensor Arrayswithin the Hypercomplex Framework

Published Online: Apr 19, 2013

Page range: 100 - 105

DOI: https://doi.org/10.2478/jee-2013-0014

Keywords
array signal processing, robust adaptive beamforming, vector-sensor, user-parameter-free, quaternion

This content is open access.

User–Parameter–Free Robust Adaptive Beamforming Algorithm for Vector–Sensor Arrayswithin the Hypercomplex Framework

Published Online: Apr 19, 2013

Page range: 100 - 105

DOI: https://doi.org/10.2478/jee-2013-0014

Keywordsarray signal processing, robust adaptive beamforming, vector-sensor, user-parameter-free, quaternion

This content is open access.

Keywords
array signal processing, robust adaptive beamforming, vector-sensor, user-parameter-free, quaternion