Edge estimation method for non-uniform envelope pulse based on instantaneous frequency

Abstract

Pulse edge estimation has always been an important issue in the field of electronic reconnaissance. Here, for the unknown received pulse with non-uniform envelope, a novel pulse edge estimation method based on instantaneous frequency is proposed. By using sliding window detection for the standard deviation of segmented instantaneous frequency of the received signal, the pulse edge rough estimation can be obtained. Then, double threshold detection on the smoothed signal segment is performed to obtain the accurate pulse edge estimation. Moreover, the parameter setting and application of this method are analysed. The simulation results show that this method can obtain the accurate estimation of the edge of unknown pulse with non-uniform envelope, and the robustness and low computational burden of the proposed method are also demonstrated.

Keywords

• signal detection
• estimation theory
• smoothing methods
• nonuniform envelope pulse
• electronic reconnaissance
• novel pulse edge estimation method
• sliding window detection
• segmented instantaneous frequency
• received signal
• pulse edge rough estimation
• double threshold detection
• smoothed signal segment
• accurate pulse edge estimation
• unknown pulse