Study On Passive Location And Optimal Observer Trajectories For Anti-radiation Unmanned Aerial Vehicle

Anti-radiation Unmanned Aerial Vehicle (UAV) is a kind of weapon system which receives signals from enemy's radars to discover, track and destroy the radars finally. Anti-radiation UAV has the advantages of both plane and missile, which has low cost and excellent performance on the battlefield. It has attracted worldwide attention and many countries are carrying out their research plans.This paper focuses on the key technologies of three-dimension passive localization and trajectories optimization with one dimension interferometer on anti-radiation UAV. Chapter 2 introduces the typical scenario when using anti-radiation UAV in the battlefield, and then discusses the choosing of antenna system, antenna distribution and passive localization system. An optimization procedure of passive localization is studied briefly in the end. In Chapter 3, two kinds of passive source positioning methods, which are the cosine angle bearing only localization method and the joint cosine bearing with phase difference change-of-rate localization method, are considered. Then the observability is also analyzed and validated by the computer simulation. A modified MDEKF is also proposed, which effectively improve the robustness of the filter. Chapter 4 first analyses the effect of UAV's trajectory on the positioning precision. And then two algorithms of single-step optimization of trajectories are proposed. Simulation shows that the optimization method is rational. Chapter 5 designs the computer simulating technology for localization and trajectories optimization based on Anti-radiation UAV and a realization is also provided.