Based On The Kinematics Of The Single Observer Passive Location Tracking Key Technology Research

The passive location and tracking system, which uses electromagnetic wave emitted by target, has proved its merits of self-hiding and far-distance detecting in modern electronic warfare(EW) and information warfare. And it is now the hotspot in the field of non-linear tracking and estimation. Due to its slow speed and low accuracy in location, the traditional Single Observer Passive Location And Tracking(SOPLAT) technology has proved itself hard to meet the demand of tactics. It is urgent to discover a new SOPLAT system and location technology.Backed up by the SOPLAT theory based on particle kinematics, the second chapter of this paper presents with analysis and simulation of several single observer passive measurement models, which uses such relative movement parameters as bearings changing rates and centrifugal acceleration information on the basis of bearings measurements. In the third chapter, the observability of location respectively using bearings and its changing rates information and centrifugal acceleration information is analyzed, and its observable condition is got. The fourth chapter puts forward the Modified coVariance Extended Kalman Filtering(MVEKF) against the defect of traditional Extended Kalman Filtering(EKF), whose performance is simultaneously compared in the chapter with the performance of ususal tracking algorithm such as EKF, MGEKF, IEKF by computer simulation. Introducing the methods and models in radar tracking maneuvering target, the fifth chapter advances the methods of Adjustable Noise Level(ANL) and Interactive Multiple Model(IMM) in SOPLAT using bearings and its changing rates information. The sixth chapter studies the techniques in measuring the bearings changing rate and centrifugal acceleration, and poses several algorithms of measuring pulse Doppler shift frequency changing rate.To sum up, this paper studies the key problems in SOPLAT based on particle kinematics and some solutions to them. Some simulation results and methods can be widely and directly applied into engineering.