Segmented combined type shipborne ground wave radar broadband transmitting antenna, antenna array and method

Abstract

The invention relates to a segmented combined type shipborne ground wave radar broadband transmitting antenna, an antenna array and a method, the segmented combined type shipborne ground wave radar broadband transmitting antenna comprises a segmented combined type transmitting antenna mast, a horizontal supporting platform on a deck, a plurality of stay wire ground anchors and a matching network, a hydraulic swing cylinder is arranged on the horizontal supporting platform, and an antenna base is arranged on the hydraulic swing cylinder; and a sectional combined type transmitting antenna rod is arranged on the antenna base. The antenna array comprises two transmitting antennas, and the two transmitting antennas are separately arranged on two sides of a ship board and are arranged in a staggered manner. According to the method, the phase of an excitation signal of the first antenna is input, and the maximum radiation energy intensity is obtained by continuously adjusting the phase of an excitation signal of the second antenna and designing a multichannel switching broadband LC matching network. According to the invention, a whip antenna form with a small size and a relatively simple appearance is adopted, and the antenna is arranged in a limited space of a shipborne platform through a sectional combined design, a high-strength assembly and a fixed mode design, is suitable for severe environments of a sea and a ship body, is compact in overall structure, and realizes a broadband emission characteristic with a small size; connection is reliable, and installation and replacement are simple and convenient.

Description

technical field [0001] The invention relates to a segmented and combined shipborne ground wave radar broadband transmitting antenna, antenna array and method, belonging to the technical field of radar antennas. Background technique [0002] As a new type of marine radar, the ground wave radar system has the capability of over-the-horizon detection of sea surface targets, so it has attracted the attention of more and more countries, and has carried out research on sea state remote sensing with shore-based wave radar and ship target monitoring. application. Integrating the system into a shipboard platform can further extend its detection range and improve its maneuverability. However, electronic information systems such as modern radar and communication have been widely used on ships. The number and types of shipboard antennas are increasing, and various devices are distributed on the superstructure of the hull. In addition, there are other facilities and devices such as mas...

AI Technical Summary

Problems solved by technology

[0004] 1. The environment of the sea and the hull is harsh, and the requirements for the strength and installation of the antenna body are more stringent, and even the antenna structure itself needs to be redesigned;

[0005] 2. The antenna needs to meet the wide-band transmission of different radar transmission frequencies, but its height and volume are limited so that the electrical length of the antenna is very small at the short-wave low-frequency end. It is difficult to meet the broadband performance requirements in the entire frequency band simply by relying on antenna impedance loading ;

[0006] 3. Conventionally, the standing wave becomes worse after the well-matched antenna is on the ship in the open coastal area, which makes the matching performance of the matching network drop significantly.

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