Method of source number estimation and its application in...

Details Method of source number estimation and its application in... Method of source number estimation and its application in...

2011-01-25

2011-01-25

Phan, Dao L (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Directive

Beacon or receiver

C342S378000

Reexamination Certificate

active

07876264

ABSTRACT:
The present invention provides a method of source number estimation based on eigenspace in DOA estimation, including: (1) obtaining signals received by uniform linear array; (2) calculating a covariance matrix according to the received signals; (3) calculating a complex-valued covariance matrix or a covariance matrix after real-valued computations; (4) conducting eigendecomposition to the covariance matrix to obtain its eigenvector matrix; (5) calculating a source number decision based on the eigenvector; (6) calculating a ratio; and (7) source number estimation. The present invention can accurately estimate source number and save huge amounts of computation during signal processing in DOA estimation, and lower the cost of hardware.

REFERENCES:
patent: 6498581 (2002-12-01), Yu
patent: 6822606 (2004-11-01), Ponsford et al.
Advances in Direction-of-Arrival Estimation, (Sathish Chandran, ed. 2005).

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