Tracking for near space nonballistic target based on several filter algorithms

Recently, different countries have made rapid developments in the field of near space hypersonic vehicles. Among which successful hypersonic vehicle flight tests of X-51A and HTV-2 are representative. They often adopt the way of nonballistic maneuver flight with characteristics of high speed and lift-to-drag ratio, flying in atmosphere for a long time. Their motion trajectory is sometimes characterized by “hopping”, which induces difficulties of nonballistic target acceleration estimation, trajectory tracking and prediction. This paper introduces four typical nonballistic maneuver models of near space targets, and then introduces target ballistic equation and design of tracking filter. At last, four tracking filters are used to estimate target acceleration. Simulation results show that particle filter algorithm is the best one to guarantee the target tracking accuracy within allowable ranges.