RADIO WAVE ARRIVAL DIRECTION ADAPTIVE DEDUCTION TRACKING METHOD AND DEVICE

Title:

RADIO WAVE ARRIVAL DIRECTION ADAPTIVE DEDUCTION TRACKING METHOD AND DEVICE

Document Type and Number:

WIPO Patent Application WO/2006/016408

Kind Code:

A1

Abstract:

In a noncorrelation white noise environment, instantaneous correlations between p signals are taken out while shifting the correlation by one element from (M-1) instantaneous correlations from which the diagonal element of a predetermined line or column of an array covariance matrix is removed, and arraying them into a matrix to define an instantaneous correlation matrix. The instantaneous correlation matrix is separated into two matrices, i.e., upper and lower correlation matrices. A linear operator at a time n is calculated according to an LMS adaptive algorithm or an NLMS adaptive algorithm by using the two upper and lower correlation matrices and a fixed or time-varying step size parameter. A noise partial space is deduced from the linear operator. Using the noise partial space, the signal arrival direction at the time n is deduced and tracked according to the approximating Newton’s method.

Inventors:

XIN JINGMIN (JP)

Application Number:

PCT/JP2004/011598

Publication Date:

February 16, 2006

Filing Date:

August 12, 2004

Export Citation:

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Assignee:

FUJITSU LTD (JP)
XIN JINGMIN (JP)

International Classes:

G01S3/46; H01Q3/26; (IPC1-7): G01S3/46; H04B7/10

Foreign References:

JP2004061468A	2004-02-26
JP2004061467A	2004-02-26
JP2002243826A	2002-08-28
JPH09219616A	1997-08-19

Other References: