The Analysis and Improvement of Bearings-only Tracking Algorithm in Correction Polar Coordinates

Regarding the motion analysis of targets above water as the application background,the research below was carried out.The algorithm which analyzes the location and other motion parameters of target was given based on the extended Kalman filter under the modified polar coordinates(MP).Firstly,the method of tracking target by Z-shaped trajectory was given based on the extended Kalman filter.Secondly,based on the motion characteristics above water,the maneuvering target tracking was realized by the improved algorithm.The simulation result shows that the method has the advantages of good stability,low requirement for measurement accuracy and can be used for tracking maneuver targets.