A wideband dual-polarization antenna array device and high-resolution direction finding method

Abstract

The invention belongs to the technical field of electromagnetic fields and microwaves, in particular to a broadband dual-polarized antenna array device and a high-resolution direction finding method that can be used in radio communication systems such as radars, and is characterized in that a six-unit ultra-wideband cavity-back type is provided. Dual-polarized log-periodic antenna array to form a multi-baseline direction finding system of a twelve-port network, in which each element is a dual-polarized structure, providing two polarization ports, and each antenna element forms a pole in the main radiation direction Orthogonal electromagnetic field, the ultra-wideband cavity-backed dual-polarization logarithmic periodic antenna array consists of a metal mounting chassis, a broadband microwave absorbing material, and three ultra-wideband cavity-backed dual-polarized logarithmic periodic antenna units. The shape is nearly conical, and the present invention can simultaneously realize the high-resolution estimation of the two-dimensional direction of arrival of the radiation source signal and the joint measurement of the polarization parameters.

Description

Technical field: [0001] The invention belongs to the field of electromagnetic field and microwave technology, and specifically relates to a broadband dual-polarization antenna array device and a high-resolution direction finding method that can be used in radio communication systems such as radar. Background technique: [0002] In electronic systems such as radio navigation, electronic reconnaissance, electronic tracking and electronic countermeasures, a very important task is to determine the position of the target. Direction of arrival (DOA, Direction of Arrival) estimation, as an important research direction in the field of array signal processing, is widely used in many fields such as radar, communication, sonar, seismic, exploration, radio astronomy, and biomedical engineering. In the military, in the modern electronic warfare environment, signal sources are dense, complex, and changeable. There are often multiple radars (radiation sources) in the actual direction-findi...

AI Technical Summary

Problems solved by technology

[0003] Traditional radio direction-finding equipment generally adopts the form of a single-polarization antenna, which can only perceive and measure the single-polarization information of incident electromagnetic waves, and the current technical level is relatively mature, and the technical indicators in target detection, parameter measurement and tracking, etc. Relatively stable; in order to meet the technical requirements of the new generation of electronic reconnaissance and direction finding systems, radio direction finding equipment with more powerful multi-parameter function has become an important development trend in the field of direction finding

Images