A Frequency Band Phase Calibration Method Based on Differential Group Delay

Abstract

Due to the disadvantages of single calibration way and low efficiency of the dualchannel monopoles radar phase calibration method and single frequency calibration for one time, we propose a method of phase calibration based on the information plus channel group delay, by which we can deduce the phase of the whole frequency just through one single phase calibration with high efficiency. In this paper, we explain the reason for dual-channel monopoles radar, analyze the disadvantages of current calibration method and prove the feasibility of this phase calibration method based on group delay. By experiments, we testify that the calibration results by this method can satisfy the performance demands of the equipment. This method improves the calibration process and efficiency.