A short-wave automatic direction-finding method based on intelligent recognition of high-resolution direction-finding language graphs

Abstract

The invention provides a shortwave automatic direction finding method based on intelligent identification of a high-resolution direction finding speech graph. The shortwave automatic direction findingmethod based on intelligent identification of the high-resolution direction finding speech graph comprises the following steps that direction finding parameters are received; a receiver is subjectedto automatic frequency setting according to the direction finding parameters to obtain time domain array data; spatial spectrum estimation and direction finding is carried out on the time domain arraydata; a plurality of time slices are repeatedly processed according to the direction finding accumulated time length to obtain a time-frequency spectrum graph and a mixed time-frequency direction graph; high-resolution direction finding processing is carried out on data of each time slice, a plurality of direction finding results of each time-frequency point are recorded, and spatial spectrum direction finding results on the data of each time slice are formed; clustering is carried out according to the spatial spectrum direction finding results to obtain a plurality of angle clustering points; the angle clustering points are taken as reference angles, the direction finding results are compared with each reference angle, and a time-frequency direction diagram of time-frequency points wherethe direction finding results are determined to exist as the direction finding speech graph; and speech graph recognition network is adopted to classify the direction finding speech graph in a signalmode. The accuracy of automatically acquiring the azimuth result under the short wave complex background condition is improved.

Description

technical field [0001] The invention relates to the technical field of short-wave direction finding, in particular to a short-wave automatic direction-finding method based on intelligent recognition of high-resolution direction-finding language graphs. Background technique [0002] As we all know, radio direction finding and positioning is one of the important technologies in the field of electromagnetic spectrum monitoring. It is an effective means to strengthen electromagnetic spectrum management, maintain order in the air, and ensure the normal operation of various wireless stations. , Disaster relief and other fields have a wide range of applications, such as the determination of illegal radio stations and so on. The short-wave frequency band in the entire radio spectrum resource has the characteristics of long communication distance, strong anti-interference and anti-destruction capabilities, and is widely used in military and emergency communications. Short-wave chann...

AI Technical Summary

Problems solved by technology

[0005] In view of the poor progress of automatic acquisition and misjudgment in the case of co-channel interference in the existing automatic direction finding processing method, the present invention provides a shortwave automatic direction finding method based on intelligent recognition of high-resolution direction finding language graphs, which improves the accuracy of shortwave complex backgrounds. Accuracy of automatic acquisition of orientation results under certain conditions

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