Method and device for positioning near-field interference source of high-frequency radio fixed direction finding station

Abstract

The invention provides a method and device for positioning a near-field interference source of a high-frequency radio fixed direction finding station. The method comprises the steps of determining a distance range of near-field interference sources which the direction finding station can position according to the radius of a circular antenna array of the direction finding station and a maximum allowable phase error of the direction finding station; performing virtualization on the circular antenna array according to the point number of a MUSIC spectrum to acquire a virtual circular antenna array; transforming a feature vector of a noise subspace of the MUSIC spectrum according to the virtual circular antenna array to acquire a transformed feature vector; and calculating the MUSIC spectrum by using a near-field direction vector of the virtual circular antenna array and the transformed feature vector, and determining the location of the near-field interference source in the distance range according to the calculated MUSIC spectrum. The method provided by the invention can perform positioning on the near-field interference source of the direction finding station, and relieves a problem that accurate positioning cannot be performed on the near-field interference source of the direction finding station in the prior art.

Description

technical field [0001] The invention relates to the field of radio technology, in particular to a method and device for locating near-field interference sources of a high-frequency radio fixed direction-finding station. Background technique [0002] With the rapid development of urbanization, the electromagnetic environment around the high-frequency radio fixed direction-finding station (hereinafter referred to as the direction-finding station) is deteriorating day by day, and there are more and more artificial interference sources in the near field. The near-field interference signal sent by the near-field interference source propagates in the form of ground waves. Although the attenuation of electromagnetic waves is faster when the ground wave propagates, the antenna of the direction-finding station will still receive a strong The energy directly affects the direction finding processing of the weak and small signals by the direction finding station. In addition, when mult...

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Problems solved by technology

[0004] In view of this, the object of the present invention is to provide a method and device for locating the near-field interference source of a high-frequency radio fixed direction-finding station, which can locate the near-field interference source of the direction-finding station, and alleviate the inability of the existing technology to locate the direction-finding station. The problem of accurate location of the near-field interference source of the station

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