Research On Shortwave Radio Direction Finding And Positioning Technology

With the continuous development and improvement of radio direction finding technology,radio direction finding,an international sports and technological competition,has gradually attracted more and more radio lovers’ attention and love.The radio direction finding movement can be divided into short wave direction finding(3.5MHz),ultrashort wave direction finding(144MHz)and decimeter wave direction finding(433MHz)on the radio frequency,of which the short wave radio direction finding movement is the most popular.Aiming at the short-wave radio direction finding movement,this paper analyzes and studies the problem of large error in the traditional direction finding results,and proposes a new direction finding method,which also improves the efficiency of the direction finder.In the short-wave radio direction finding movement,the traditional direction finding machine can only judge the direction of the signal source through the human ear,which has a large error.In view of the above problems,this paper proposes a method of using pattern matching in radio direction finding movement,which uses the value of signal intensity to replace the size of sound heard by human ears to determine the position of signal source.Finally,the experimental site and equipment were arranged to test the software and hardware of the direction finder.After the test,the direction finder was used for field experiments,which confirmed the correctness of the simulation experiment conclusion,that is,the direction finding location using the pattern matching method is more accurate than the human ear hearing judgment,which proved that the pattern matching direction finding method greatly reduces the angular error of the direction finding results.This is of great significance to the development of radio direction finding.