Verfahren und System mit automatischer Kalibrierung einer multistatischen Antennenanordnung

Details

Veröffentlichungs-Nr.

EP2667217

Aktenzeichen

EP12174358

Anmeldetag

29. Juni 2012

Veröffentlichung

8. Februar 2017

Erteilung

8. Februar 2017

Rechtsraum

EP

IPC

G01S7/40G01S13/00G01S13/89H01Q3/26H04B17/00

Abstract

A method for an automatic calibration of a multistatic antenna array comprising N<t>transmitters and N<r>receivers is provided, wherein a correction coefficient is determined for each combination of each transmitter T<i>with each receiver R<j>at each operation frequency by a calibration measurement (31) represented by a matrix element T<ij>of a calibration matrix T. A m<th>estimation for a refined calibration matrixT̂m is determined by the steps i. measuring (31) all initial matrix elements T<ij>, wherein T<ij>is the ratio of the measured magnitude and phase of a signal at receiver R<j>, which is emitted by transmitter T<i>and reflected by a known calibration object, to an expected received signal at receiver R<j>, ii. normalizing (35) each column of matrixT̂m-1 by one arbitrary column of matrixT̂m-1 and, iii. normalizing (35) each row of matrixT̂m-1 by one arbitrary row of matrixT̂m-1 and repeating steps ii. and iii. through a predefined number of times, wherein the first estimation is started withT̂0 which comprises the initial calibration matrix elements T<ij>measured in step i.

Anmelder

Firma

Rohde & Schwarz GmbH & Co. KG

Land

🇩🇪 Deutschland

Fachgebiete