The Research on Rodless Calibration Method for Ka-band Dual Channel Telemetry Equipment
The sum and difference channels of Ka-band dual channel telemetry equipment have phase differences,which can vary with environmental changes.Phase correction is required at the baseband terminal to achieve phase difference correction and ul-timately achieve autonomous tracking of the target.In the shooting range,baseband phase calibration was usually achieved by set-ting up calibration rods,which can achieve the purpose of phase calibration.However,with the expansion of telemetry equipment in the field of combat,it has expanded to areas such as deep sea and plateau.Due to the various limitations of these special location en-vironments on setting up calibration rods,this article focuses on studying how to achieve the purpose of calibrating the phase zero value of the differential channel,without setting up calibration rods,transmit signals through biased antennas in plateau environ-ments.This article presents the principle and method of rodless calibration based on biased antennas,and verifies the effectiveness of the proposed method through experiments.
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维普
