Patent Number: 8,743,658

Title: Systems and methods for blind localization of correlated sources

Abstract: A system and a method for a blind direction of arrival estimation is provided for a nonlinear 1-dimensional array of M receivers of J<M unknown signals transmitted through an unknown channel and subject to Gaussian noise. The method overcomes the conditions of that signals be disjoint in the time-frequency domain and/or statistically independent. A likelihood function evaluates a probability for the directions of arrivals. A weighting and regularization scheme selects relevant frequency components. A joint likelihood function of all frequencies is interpreted as a cost or objective function. The time domain is included into the estimation procedure by using a particle filter that operates on the constructed likelihood function and a simple transition kernel for the directions.

Inventors: Claussen; Heiko (Plainsboro, NJ), Rosca; Justinian (West Windsor, NJ), Wiese; Thomas (Munich, DE)

Assignee: Siemens Corporation

International Classification: G01S 3/80 (20060101); G01S 3/74 (20060101)

Expiration Date: 2022-06-03 0:00:00