Electromechanical-coupling-oriented calculation method for performance simulation confidence degree of active phased array antenna

Abstract

The invention discloses an electromechanical-coupling-oriented calculation method for the performance simulation confidence degree of an active phased array antenna. The method comprises the steps that influence factors of the performance of the active phased array antenna are determined; an antenna finite element model is established; temperature field analysis is conducted, and the confidence degree of thermal parameters is calculated; the confidence degree of the grid size is calculated based on a root-mean-square error of array surface temperature; antenna structural thermal deformation is calculated, and position offset of geometric center nodes of antenna units is extracted; the confidence degree of structural displacement extraction is calculated; an electromechanical coupling model is used for calculating electric performance of the antenna; the calculation result is compared with a calculation result obtained through electromagnetic simulation software, and the confidence degree of the electromechanical coupling model is calculated; the weighting coefficient is determined based on an analytic hierarchy process; a confidence degree calculation formula is established, and the performance simulation confidence degree of the active phased array antenna is calculated and finally determined. The antenna performance simulation confidence degree calculation method is established, and a judgment criterion is provided for the simulating calculation result of influences of structural thermal deformation of the active phased array antenna on electrical properties.

Description

technical field [0001] The invention belongs to the technical field of antennas, and in particular relates to a calculation method for performance simulation confidence of an active phased array antenna oriented to electromechanical coupling. Background technique [0002] With the rapid development of electronic science and technology, active phased array antennas can quickly change the antenna beam pointing and beam shape, can be used for multiple transmitters to combine power in space, and can easily form multiple transmitting and receiving beams. Active phased array antennas are conformal to radar platforms and have incomparable advantages in observing high-speed moving targets, realizing multiple radar functions and multi-target tracking, etc., and are widely used in radar systems. At present, active phased array antennas have been applied to almost all radar application fields such as early warning, guidance, guidance, fire control and over-the-horizon detection. It ca...

AI Technical Summary

Problems solved by technology

During the active phased array antenna’s service stage, the heat generated by the T / R component of the high-power device causes thermal deformation of the active phased array antenna’s front surface, which leads to the deterioration of the electrical performance of the antenna.

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