Passive calibration of gain and phase errors for ADS-B anti-jamming antenna array

Abstract

Abstract: The real array manifold and ideal array manifold may be different due to the gain and phase errors of array, and performance of algorithms will be sharply affected by the gain and phase errors. A passive calibration algorithm is proposed to calibrate the gain and phase error of the ADS-B system array. In the proposed method, one of the sensors can be used to obtain the positions of aircrafts, and the position of array antenna can be measured, then the DOA of pilot source is computed through coordinate system transformation, and the array errors are calibrated by using direction information. Gain and phase errors can be accurately estimated by the proposed method, and the performance of algorithms is effetively improved. Performance of calibrated array is highly improved. The extra pilot sources do not need to be set manually, thus the equipment complexity is reduced. Simulation results prove the effectiveness of the proposed algorithm.

Key words: ADS-B , gain and phase errors, array calibration

CLC Number:

TN911

WANG Wenyi, ZHU Te, WU Renbiao. Passive calibration of gain and phase errors for ADS-B anti-jamming antenna array[J]. .

References

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