Research And Realization Of Communication Target Passive Location Technology By Airborne

With the continuous development of airborne platform and telemetrytechnology, it has been paid much attention that the communication target location isrealized through airborne platform in EW field. And bearing cross location techniqueand phase difference changing rate location technique are two important aspects ofcommunication signal passive location technology. The article introduces the principleof cross DF and location technique and phase difference changing rate locationtechnique, and simulation analysis is also illustrated. It also studies the application ofthese two techniques in airborne communication target location system. it providesimportant theory and research experience for the engineering application of airbornecommunication target location system.The main research contents of the dissertation include:(1) it researchesbearing cross location principle and deduces the solution procedure of locationequation and makes simulation analysis. The on-site experiment verifies that thebearing cross location algorithm based on Modified Gain Extended KalmanFilter(MGEKF) can be used in real project, and its location accuracy is much betterthan the counterpart of2-station bearing cross location;(2) it researches the principleof phase difference changing rate location, and deduces the solution procedure oflocation equation and simulation analysis. The simulation verifies that the MGEKFalgorithm can improve location accuracy and convergence rate of multiple locationfiltering process.(3) It researches the design scheme of airborne communication targetlocation system, including system composition, operation principle, equipment andalgorithm design. It also gives engineering bearing cross location and phase differencechanging rate location methods based on MGEKF, and verifies the system locationalgorithm and location accuracy through field test.