Direction of Arrival Estimation of Eigenstructure Methods with Unknown Sensor Gain and Phase
STANFORD UNIV CA INFORMATION SYSTEMS LAB
Pagination or Media Count:
Direction of arrival estimation by eigenstructure methods requires knowledge of the array covariance matrix and an exact characterization of the array in terms of geometry, sensor gain and phase, etc. It often happens that the actual in terms of geometry, sensor gain and phase, etc. It often happens that the actual sensor gain and phase are perturbed from their assumed nominal values. If eigenstructure methods are applied with incorrect sensor parameters, the method essentially breaks down or at best gives poor results. We propose a new approach which uses information in the observed covariance matrix to correct for these effects. This method yields substantially improved performance, a fact illustrated by the results of computer simulations. Keywords include Direction of arrival Eigenstructure methods Sensor gain and Array covariance.
- Direction Finding