Self-calibration method of switched array antenna radar
AssigneeElectronics and Telecommunications Research Insitute
InventorDong Kyoo KIM
Life of this patent
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Abstract
Disclosed is a self-calibration method and apparatus for an array antenna system. According to an embodiment of the present disclosure, a correction method of an array antenna system includes: deriving, at a first time, a correction factor Ri,j for a path connecting an i-th (i is an integer equal to or greater than one and equal to or less than m) transmission antenna and a j-th (j is an integer equal to or greater than one and equal to or less than n) reception antenna; deriving, at a second time, a calibration factor {circumflex over (Q)}i,j for the path connecting the i-th transmission antenna and the j-th reception antenna; and performing, based on the {circumflex over (Q)}i,j, calibration on the path connecting the i-th transmission antenna and the j-th reception antenna.
Claims20
A correction method of an array antenna system including m (m is an integer equal to or greater than one) transmission antennas and n (n is an integer equal to or greater than one) reception antennas, the correction method comprising:
- deriving, at a first time, a correction factor Ri,j for a path connecting an i-th (i is an integer equal to or greater than one and equal to or less than m) transmission antenna and a j-th (j is an integer equal to or greater than one and equal to or less than n) reception antenna;
- deriving, at a second time, a calibration factor {circumflex over (Q)}i,j for the path connecting the i-th transmission antenna and the j-th reception antenna;
- and
- performing, based on the {circumflex over (Q)}i,j, calibration on the path connecting the i-th transmission antenna and the j-th reception antenna.
A calibration apparatus for an array antenna system, the calibration apparatus comprising:
- a signal processing unit;
- m (m is an integer equal to or greater than one) transmission antennas;
- and
- n (n is an integer equal to or greater than one) reception antennas,
- wherein the signal processing unit is configured to,
- derive, at a first time, a correction factor Ri,j for a path connecting an i-th (i is an integer equal to or greater than one and equal to or less than m) transmission antenna and a j-th (j is an integer equal to or greater than one and equal to or less than n) reception antenna;
- derive, at a second time, a calibration factor {circumflex over (Q)}i,j for the path connecting the i-th transmission antenna and the j-th reception antenna;
- and
- perform, based on the {circumflex over (Q)}i,j, calibration on the path connecting the i-th transmission antenna and the j-th reception antenna.
Dependencies are inferred from the claim text.