The Analysis And Software Implementation Of Radio Direction Finding Algorithm Based On LabVIEW

With the shortage of radio spectral resource getting exiguouser day by day and the radio interferences occurs so frenquently , the radio spectral monitor gets more and more important. The spatial spectral is an main conception of array signal processing, that means the energy distribution in various direction of spatial signal. By estimating the spatial spectral of incidence signals . We can obtain the DOAs (Direction of Arrival) and other parameters of incidence signals ,further,we can monitor and inspect them by using these parameters.In this thesis, we establish the mathematical model of un-coherent signal of spatial spectral estimation at first. Secondly, on the basis of studing of bi-rank array statistics property , We analyze the MUSIC(Multiple Signal Classification) algorithm based on uniform circle array, make software implementeation and debugging, then used in the project of radio spatial direction finding. Finally, we realize a direction finding algorithm analysis platform based on the principle of software engineering. Using this platform we analyze and compare the performance of MUSIC direction finding algorithm and two other ESPRIT(Estimation of Signal Parameters via Rotational Invariance Techniques) algorithms. The results we attained are consistent with the theory research.