Multi-beam switching cylindrical array antenna structure and radar system

Abstract

The invention provides a multi-beam switching cylindrical array antenna structure and a radar system. The multi-beam switching cylindrical array antenna structure comprises a transmitting module and a receiving module which are oppositely arranged in the pitching direction, wherein a metal gap is formed between the transmitting module and the receiving module; the transmitting module comprises a plurality of transmitting array elements which are circumferentially distributed in the azimuth direction, and the receiving module comprises a plurality of receiving array elements which are circumferentially distributed in the azimuth direction; the transmitting array elements and the receiving array elements are the same in number and are arranged in the pitching direction in a one-to-one correspondence mode. On the basis of the multi-beam switching cylindrical array antenna structure, arbitrary switching and combination of various beams can be realized at the transmitting module part by controlling the phase of each channel, full coverage of 360-degree space is realized, a specific transmitting waveform is formed, and the detection distance is increased under the condition of limited transmitting power; in the receiving module part, signals are independently received through the plurality of receiving array elements so that the signal energy in a main wave beam range can be increased.

Description

technical field [0001] The invention relates to the technical field of antenna design, and more specifically, relates to a multi-beam switching cylindrical array antenna structure and a radar system. Background technique [0002] The antenna is one of the most critical components of the radar system. Through array radar and mechanical scanning, 360° coverage of the entire space is achieved. [0003] Based on the antenna part of the existing array radar, there are various array structures, such as linear array, circular array, cylindrical array, planar array, cross array, etc. In order to achieve 360° omnidirectional coverage, the circular Arrays and cylinder arrays are good implementations. In the circular array, it only realizes the positioning of the target on the plane, and realizes the positioning of the target on the two-dimensional plane through the target parameters and azimuth angle. In the cylindrical array, it can realize the positioning of the target in three-di...

AI Technical Summary

Problems solved by technology

[0006] However, due to the configuration of the servo turntable system, the equipment will be bulky and heavy, and the portable installation will take time and effort, which is not conducive to the application in the natural environment

At the same time, there will be mechanical wear during mechanical scanning, resulting in a short service life of the radar and a high failure rate

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