Anti-receiver phase jump method for measuring directions of interference sources

Abstract

The invention belongs to technology for simultaneously measuring the directions of a plurality of wireless signal interference sources, which comprises the following steps of: setting sparse dictionaries, establishing interference source incoming wave azimuth column vectors, establishing an interference source detection data matrix, determining a direction bit matrix and determining the directions of the interference sources. In the technology, the sparse dictionaries are constructed at a set angular resolution interval in the range of 1 degree to 360 degrees according to the array manifold of a receiver array by utilizing phase jump times and the sparse characteristics of space distribution of the interference sources, and are taken as basic parameter sets in the determination of the directions of the plurality of interference sources; and each receiver simultaneously acquires the plurality of interference sources. Therefore, the technology has the characteristics of effectively solving the problem of performance reduction caused by phase jump, maximally reducing high requirements on consistency among channels of the receivers, greatly reducing difficulties in work of a system, and the like, and overcomes the defects of extremely high requirements on the consistency among the channels of the receivers, great influence of the phase jump on direction measurement accuracy, and the like in the prior art.

Description

technical field [0001] The invention belongs to the technique of direction finding for a wireless propagation signal source. Especially when a kind of continuous A / D sampled data in the receiver, often can appear significant phase jump phenomenon, utilize the method of space spectrum direction finding technology to a plurality of interference sources direction finding simultaneously; Adopt the method of the present invention can greatly The influence of the phase jump on the direction finding result is reduced, and the consistency requirement among the sampling data of each channel of the receiver is reduced. Background technique [0002] With the rapid development of radio technology, radio spectrum resources are becoming increasingly tight, and radio interference incidents occur from time to time. In the field of national defense, especially in modern electronic warfare, it is of great significance for both the enemy and the enemy to detect the location of the interferenc...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to study and design a multi-interference source direction finding method that is resistant to receiver phase jumps in view of the defects in the background technology, so as to effectively solve the problem of performance degradation caused by phase jumps and reduce the In the direction finding, it has the characteristics of high consistency requirements between the receiver channels, greatly reducing the deviation of the system direction finding, etc.; to overcome the traditional technology (such as MUSIC space spectrum direction finding technology, etc.) Defects such as extremely high performance requirements, phase jumps have a great impact on direction finding accuracy, etc.

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