Journal of Shanghai Jiaotong University ›› 2011, Vol. 45 ›› Issue (03): 345-0349.

• Radiao Electronics, Telecommunication Technology • Previous Articles     Next Articles

A Method for Multitarget Passive Location by a Movable Single Station  Based on Weighted MUSIC Algorithm in FRFT Domain

 HE  Wei-Yan, JIN  Rong-Hong, GENG  Jun-Ping, LIANG  Xian-Ling   

  1. (School of Electronic, Information and Electrical Engineering, Shanghai Jiaotong University, Shanghai 200240, China)
  • Received:2010-03-30 Online:2011-03-30 Published:2011-03-30

Aiming at the situation of multiple linear frequency modulation(LFM) signal sources, by analyzing the Doppler shift of received signals, a multicomponent LFM signal model for the antenna array on a movable single station was built. Then a method for multitarget passive location based on weighted MUSIC algorithm in fractional Fourier transformation(FRFT) domain was presented, which implements the detection and DOA estimation of multitarget signals at low SNR. The simulation results show that  multiple targets with similar frequency and close space can be distinguished in a high accuracy.

Key words:  linear frequency modulation(LFM) signal, multitarget, passive location, fractional Fourier transformation(FRFT), weighted MUSIC algorithm

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