A Real-Time Approach for Multiphysics Field Reconstruction of Active Phased Array Antenna

This study proposes an effective approach to reconstruct the multiphysics field of the active phased array antenna (APAA) through limited information on temperature and strain. First, the multiphysics coupling model of the APAA is constructed to analyze the thermal-mechanical–electromagnetic responses; the model calculation accuracy is verified by experimental testing. Then, a large number of samples containing the temperature and deformation information are generated through the coupling model. Subsequently, the multiphysics field reconstruction model is established based on the extreme gradient boosting (XGBoost) method, in which parallelization computing is implemented to fully improve the prediction efficiency. Finally, the testing samples are used to evaluate the performance of the reconstruction model. The obtained results indicate that the developed model is able to reconstruct the multiphysics field of the APAA in real time more precisely by comparing it with existing machine learning methods. This approach can provide reliable temperature and displacement reconstruction information for the compensation of the APAA electromagnetic performance (EP).