Device for discriminating the phase and the phase variation...

Details Device for discriminating the phase and the phase variation... Device for discriminating the phase and the phase variation...

H - Electricity

03

D

H03D 13/00 (2006.01) G01S 19/29 (2010.01)

Patent

CA 2740274

Phase discriminator device receiving as input a complex signal whose argument represents a phase error .DELTA..PHI. and producing as output an estimate .theta.n+1 of the phase error .DELTA..PHI. for each signal sample Z n+1 received, characterized in that it comprises computation means suitable for determining the phase estimate obtained at an instant (N+1)T1 with the aid of the following relations: .theta.n+1 = .theta.n + .DELTA..theta.n+1 + .DELTA..theta.n+1 .DELTA..theta.n+1 = Discri Frequency(n + 1).2.pi..T1 .DELTA..theta.n+1 = arctan(I'n+1, Q'n+1) I'n+1 + jQ'n+1 = Z n+1.Z'~+1 Z'n+1 = exp(j.DELTA..theta.'n+1).Z n where T1 is the time interval between two samples Z n and Z n+1 received consecutively, Discri frequency(n+1) is an estimate of the frequency error @.DELTA..PHI./@t of the said complex signal as produced by a frequency discriminator that the said device comprises, and Z'~+1 is the complex conjugate of Z'n+1.

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