A hybrid integration method for uniformly accelerated target
In radar signal processing, across range unit (ARU) and Doppler frequency migration (DFM) effect are important problems, which results in the degradation of integration performance. Especially for uniformly accelerated targets, both ARU and DFM will occur in long time integration. In order to deal with it, a hybrid integration algorithm is proposed in this paper. The keystone transform is applied in each frame for coherent integration. Then the trajectory feature of target is used for incoherent integration by parabola fitting. The experiment compares the performance of different methods and the results verify the validity of the proposed method.