Envelope Extraction Algorithm for Amplitude Sorting of Radar Emitter Signals

The sorting accuracy of the radar emitter signal-sorting algorithm is reduced in a complex electromagnetic environment. In view of this problem, we proposed an envelope extraction algorithm for amplitude sorting of radar emitter signals in this paper. On the basis of the variation characteristics of pulse amplitude (PA), the envelope extraction algorithm is designed for PA by segmented Hermitian interpolation and amplitude difference algorithm. This algorithm achieves the sorting of radar emitter signals in the case of severe aliasing. From the simulation results, it can effectively process aliasing radar source signals with false and missing pulses, which enables a high accuracy in different situations. The algorithm provides a new and convenient method for radar emitter signal-sorting.