Study On Extraction Method Of Ionospheric Parameters For Incoherent Scatter Radar

In the process of detecting the ionosphere,the noncoherent scattering radar can receive the echo signal scattered by the ionosphere.The signal is processed to obtain the corresponding scattering spectrum,and the corresponding ionospheric parameters are obtained by inversion calculation.The conventional radar data processing methods are complex and slow.Generally it only in the high-performance server to use,realtime computing efficiency is low.In order to realize the rapid extraction of parameters and the real-time data processing on the ordinary computer,the simplified algorithm is obtained by analyzing and simplifying the processing of the noncoherent scattering radar signal and extracting the ionospheric parameters.According to the theory of incoherent scatter radar,a simulation platform is built on the MATLAB software platform to verify the correctness of the algorithm.This paper mainly carried out the following work:Firstly,the research background and status of incoherent scatter radar,the development history of incoherent scattering detection,and the EISCAT radar system in the world's existing noncoherent scattering radar are introduced.Secondly,the basic principle of noncoherent scattering detection and the knowledge points in the data processing of incoherent scatter radar are introduced.Thirdly,In the process of signal processing,the ionospheric scattering spectra in the idealized environment are described from the modeling of the ionospheric scattering spectrum,and then the fuzzy function and the three kinds of coding are introduced.This content provides the theoretical basis for the de-blurring part of the signal processing.Fourthly,the simulation platform of the noncoherent scattering software radar is introduced.The simulation power spectrum of IRI model data is processed by simplified algorithm,and the results are compared with the IRI model data,Similarly,We can get a result by using the simplified algorithm to process the measured data,and compare the results with the GUISDAP software,and the correctness of the inversion algorithm is verified by analyzing the comparison graph.