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Target detection using CDMA based passive bistatic radar

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3 Author(s)
Wang, Haitao ; National Lab of Radar Signal Processing, Xidian University, Xi'an 710071, P. R. China ; Wang, Jun ; Li, Hongwei

Recently, the code division multiple access (CDMA) waveform exists in the large area across the world. However, when using the CDMA system as the illuminator of opportunity for the passive bistatic radar (PBR), there exists interference not only from the base station used as the illuminator of opportunity but also from other base stations with the same frequency. And because in the CDMA system, the signal transmitted by each base station is different, using the direct signal of one base station can not cancel the interference from other base stations. A CDMA-based PBR using an 8-element linear array antenna as both the reference antenna and surveillance antenna is introduced. To deal with the interference in this PBR system, an adaptive temporal cancellation algorithm is used to remove the interference from the base station used as the illuminator of opportunity firstly. And then a robust adaptive beamformer is used to suppress the interference from other base stations. Finally, the preliminary experiment results demonstrate the feasibility of using CDMA signals as a radar waveform.

Published in:

Systems Engineering and Electronics, Journal of  (Volume:23 ,  Issue: 6 )