Abstract:

 Aiming at the problem of tracking near space hypersonic vehicles (NSHV), a new dynamic tracking model is proposed. Firstly, the motion characteristics of NSHV are analyzed from the dynamic equations as well as the transverse and longitudinal maneuvering modes, which are abstracted as the general law of the aerodynamic acceleration relativity of a slip NSHV. On this basis, the resistance and climb force acceleration in the aerodynamic acceleration are modeled as the second-order time-dependent model, it is considered that the two acceleration correlations have both periodicity and decay, and then the state equation of the dynamic tracking model is established. In addition, in order to deal with the problem of the error abrupt change of the power with or without power conversion, a strong tracking filter is introduced to filter the abrupt point. Finally, compared with different existing algorithms, the superiority of the proposed model is verified.

Key words: Near space, Hypersonic target, Target tracking, Dynamic model