Phased array radar system transceiver unit and error calibration method thereof

Abstract

The invention discloses a phased array radar system transceiver unit and an error calibration method thereof. The phased array radar system transceiver unit comprises a horizontal polarized link and a vertical polarized link and is characterized by further comprising a controller, a directional coupler and a switch matrix unit, wherein the directional coupler is used for sampling radar emission signals and receiving calibration signals, the switch matrix is used for providing a common return for the horizontal polarized link and the vertical polarized link so as to realize automatic and real-time calibration of relative errors of the horizontal polarized link and the vertical polarized link of a radar system, and the phased array radar system transceiver unit is additionally provided with the directional coupler and the open matrix unit on the basis of a traditional phased array radar system transceiver unit.

Description

technical field [0001] The invention relates to the field of radar, in particular to a transceiver unit of a phased array radar system and an error calibration method thereof. Background technique [0002] In the dual-polarization phased array radar system, because the system work has very high requirements on the phase and amplitude relative errors of the sending and receiving signals between the horizontal polarization and vertical polarization links, so the production process of the phased array radar system needs To accurately calibrate the phase and amplitude errors between the horizontal polarization and vertical polarization links of each transceiver unit, the calibration process is complex and time-consuming. In the traditional phased array radar system, since there is no common detection circuit, the relative error calibration between the horizontal polarization link and the vertical polarization link cannot be realized, and one-time calibration can only be achieved...

AI Technical Summary

Problems solved by technology

[0002] In the dual-polarization phased array radar system, because the system work has very high requirements on the phase and amplitude relative errors of the sending and receiving signals between the horizontal polarization and vertical polarization links, so the production process of the phased array radar system needs Accurately calibrate the phase and amplitude errors between the horizontal polarization and vertical polarization links of each transceiver unit, the calibration process is complex and time-consuming

In the traditional phased array radar system, since there is no common detection circuit, the relative error calibration between the horizontal polarization link and the vertical polarization link cannot be realized, and one-time calibration can only be achieved manually in the production process , the error that occurs during the use of the radar system cannot achieve real-time, automatic calibration

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