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| A Method for Multitarget 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 |
| (School of Electronic, Information and Electrical Engineering, Shanghai Jiaotong University, Shanghai 200240, China) |
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Abstract
Aiming at the situation of multiple linear frequency modulation(LFM) signal sources, by analyzing the Doppler shift of received signals, a multicomponent LFM signal model for the antenna array on a movable single station was built. Then a method for multitarget passive location based on weighted MUSIC algorithm in fractional Fourier transformation(FRFT) domain was presented, which implements the detection and DOA estimation of multitarget signals at low SNR. The simulation results show that multiple targets with similar frequency and close space can be distinguished in a high accuracy.
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Received: 30 March 2010
Published: 30 March 2011
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