Title :
Target Detection in Long Duration Energy Integration by Time-Frequency Distribution and Morphological Filtering
Author :
Shang, Haiyan ; Shui, Penglang ; Zhang, Shouhong
Author_Institution :
Nat. Lab. of Radar Signal Process., Xidian Univ., Xi´´an
Abstract :
A new energy integration detection scheme is proposed to detect a nonlinear frequency modulate (FIM) embedded in strong complex additive white Gaussian noise (CAWGN). In this scheme, the optimal kernel of Cohen´s time-frequency distribution (TFD) is designed to realize local coherent integration of a signal. Thresholding and morphological filtering are used to extract the time-frequency (TF) support region of the signal from the TFD of an observation. Simulated results show that in the strong noise background with low ratios of signal to noise (SNR) the proposed method is effective
Keywords :
filtering theory; radar detection; radar signal processing; time-frequency analysis; Cohen´s time-frequency distribution; FIM; TFD; energy integration detection scheme; morphological filtering; nonlinear frequency modulation; optimal kernel; target detection; time-frequency extraction; Clutter; Filtering; Frequency modulation; Kernel; Object detection; Radar detection; Signal detection; Signal to noise ratio; Testing; Time frequency analysis; Long-duration energy integration; Morphological filtering; Signal detection; Time-Frequency Distribution;
Conference_Titel :
Radar, 2006. CIE '06. International Conference on
Conference_Location :
Shanghai
Print_ISBN :
0-7803-9582-4
Electronic_ISBN :
0-7803-9583-2
DOI :
10.1109/ICR.2006.343594
