Anti-multipath antenna for satellite navigation precision approaching system

Abstract

The invention discloses an anti-multipath antenna for a satellite navigation precision approaching system, and belongs to the technical field of satellite navigation precision approaching. The anti-multipath antenna comprises an intermediate post and a feeding network, wherein a plurality of layer surfaces are arranged on the intermediate post at equal distance and are perpendicular to the intermediate post, a plurality of radial branches are arranged on each layer surface and are arranged around the intermediate post at equal interval angels, a dipole arm is arranged at each of two sides of atail end of each radial branch, an extension direction of the dipole arm is perpendicular to an extension direction of radial branch which the dipole arm is located, an included angle is formed between the dipole arm and the layer surface, the included angles of the two dipole arms on the same radial branch relative to the layer surface are opposite in direction and are equal in sizes, the two dipole arms on the same radial branch form a dipole, two arbitrary layer surfaces are equal in structures and are not rotated relative to each other, and the feeding network is used for feeding each layer surface. The antenna has the characteristics of simple structure and excellent radiation effect and is an important improvement of the prior art.

Description

technical field [0001] The invention relates to the technical field of satellite navigation precision approach, in particular to an anti-multipath antenna for a satellite navigation precision approach system. Background technique [0002] At present, surveying antennas with choke coil structures are mostly used in the field of satellite navigation engineering, but this antenna cannot meet the highest-end engineering requirements of satellite-guided approach. The satellite navigation precision approach and landing system (usually referred to as GBAS in English) requires a unique ground reference antenna. However, the antennas in the prior art generally have problems such as poor multipath suppression ability and unstable phase center. Contents of the invention [0003] In view of this, the present invention proposes an anti-multipath antenna for a satellite navigation precision approach system, which has better multipath suppression capability and a highly stable phase cent...

AI Technical Summary

Problems solved by technology

[0002] At present, in the field of satellite navigation engineering, surveying antennas with choke coil structures are mostly used. However, this antenna cannot meet the highest-end engineering requirements of satellite-guided approach.

The satellite navigation precision approach and landing system (usually referred to as GBAS in English) needs to use a unique ground reference antenna. However, the antennas in the prior art generally have problems such as poor multipath suppression ability and unstable phase center.

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