Large-scale phased antenna array wide-angle scanning optimization method based on space mapping

Abstract

The present invention discloses a large-scale phased antenna array wide-angle scanning optimization method based on space mapping. The large-scale phased antenna array wide-angle scanning optimization method based on space mapping comprises the following steps of: establishing an array antenna model; under the condition of not considering mutual coupling, obtaining a directional diagram of an array by multiplying directional diagrams of array elements by an array factor so as to establish a rough mode of array antenna space mapping, optimizing the rough model and determining the optimal design parameter of the rough model; processing a fine model by adopting a full-wave analysis moment method, enabling response of the rough model to approach to response of the fine model by parameter extraction and establishing a mapping relation between the rough model parameter and a fine model parameter; and obtaining the predicted parameter of the fine model by utilizing the optimal design parameter of the rough model and inverse mapping of the established mapping relation and if the predicted parameter of the fine model does not meet the design requirement, carrying out iterative updating on the mapping relation until the predicted parameter of the fine model meets the design requirement. According to the method, the designed parameter is integrally optimized and on the premise of ensuring accuracy, calculating time is saved.

Description

technical field [0001] The invention belongs to the technical field of phased array antennas, in particular to a large-scale phased antenna array wide-angle scanning optimization method based on space mapping. Background technique [0002] Phased array antennas have many unique functions, such as space search, identification and tracking, as well as high power, high data rate and the ability to resist harsh environmental conditions. Mainly used for space target detection, airborne radar, commercial vehicle early warning radar, RFID radio frequency identification tags, etc. To flexibly control the pattern of large array antennas, it must rely on powerful electromagnetic scattering calculation methods. In the past, the research work on the radiation characteristics of array antennas mostly relied on numerical algorithms such as the method of moments or commercial software based on numerical algorithms. However, when the scale of the array antenna is too large, such methods wi...

AI Technical Summary

Problems solved by technology

However, for targets with complex structures, the traditional space mapping method will no longer converge because the coarse model does not have an analytical expression or the equivalent circuit is not easy to describe.

Images