Data processing: measuring – calibrating – or testing – Measurement system – Measured signal processing
Reexamination Certificate
2011-03-22
2011-03-22
Bui, Bryan (Department: 2857)
Data processing: measuring, calibrating, or testing
Measurement system
Measured signal processing
C342S444000
Reexamination Certificate
active
07912680
ABSTRACT:
A direction-of-arrival estimation apparatus has a signal vector generation unit operable to generate a signal vector v composed of N baseband signals v1to vNfrom arriving signals received from a target by N sensors. The direction-of-arrival estimation apparatus includes a Hankel matrix generation unit operable to preferentially set an order of a column of a matrix at a natural number M where 1≦M and M≦(N−1)/2 and generate an (N−M)×M matrix Rf1, Rf2, Rb1, or Rb2from elements v1to vN-1of the signal vector. The direction-of-arrival estimation apparatus also includes an estimation unit operable to generate a matrix R using the matrices Rf1, Rf2, Rb1, or Rb2, divide the matrix R into two submatrices R1and R2by R=[R1|R2]T, and estimate a direction of arrival of the arriving signal based on the submatrices R1and R2.
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Bui Bryan
Fujitsu Limited
Katten Muchin & Rosenman LLP
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