A multiple points-wise sliding DFT method based on sliding window model and DIT modification

The real-time processing of instantaneous bell target signal puts forward a higher demand in real-time processing ability and algorithm complexity. According to the high computational load of the point-wise sliding DFT method used in multiple points-wise sliding algorithm, a novel multiple points-wise sliding DFT algorithm is proposed in this paper based on sliding window model with a wide application in data streams processing. The calculation structure of the algorithm is modified by using DIT algorithm. The simulation results show that the algorithm could calculate the instantaneous bell target signal amplitude in real-time with less operations and has an ability of abnormal points tolerance in data sampling.