Title :
FCM-based radar target detection in medium frequency signal of radar
Author :
Su, Xiaohong ; Suo, Jidong ; Liu, Xiaoming ; Wang, Yingchun
Author_Institution :
Inf. Sci. & Technol. Coll., Dalian Maritime Univ., Dalian, China
Abstract :
In radar target detection application fields, rich of information of targets may be included in medium frequency. Doppler shift caused by moving target is one of them. In this paper, Doppler shift and its Short Time Fourier Transform-STFT is analyzed and discussed. Since it is difficult to distinguish the Doppler shift of moving target even in frequency domain with STFF method, fuzzy C means clustering method is introduced to seek the two centers of the mixed signals in a radar scanning period. Using multiple radar scanning period, several centers can be determined by a center function using arithmetic mean filter. Finally the targets can be detected by threshold decision and calculated the detection probability. This algorithm is simple, easily to realize, with small computation burden and good target detection probability.
Keywords :
Doppler shift; Fourier transforms; filtering theory; frequency-domain analysis; fuzzy set theory; pattern clustering; probability; radar detection; radar signal processing; Doppler shift; FCM-based radar target detection; STFT; arithmetic mean filter; fuzzy C means clustering method; medium-frequency signal; radar scanning period; short time Fourier transform; target detection probability; threshold decision; Clustering algorithms; Doppler effect; Doppler radar; Object detection; Radar detection; Signal processing algorithms; Radar MF signal; STFT; doppler; fcm; target detection;
Conference_Titel :
Fuzzy Systems and Knowledge Discovery (FSKD), 2010 Seventh International Conference on
Conference_Location :
Yantai, Shandong
Print_ISBN :
978-1-4244-5931-5
DOI :
10.1109/FSKD.2010.5569564
