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Azimuth-invariant bistatic multichannel synthetic aperture radar for moving target detection and location

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4 Author(s)
Lv, X. ; Key Lab. of Radar Signal Process., Xidian Univ., Xi'an, China ; Xing, M. ; Wu, Y. ; Zhang, S.

Ground moving target indication (GMTI) is one of the most important applications of the bistatic synthetic aperture radar (SAR) system as well as the monostatic system. An algorithm for moving target detection and location is presented with an azimuth-invariant bistatic multichannel SAR, which consists of one transmitter (channel) and multireceivers (multichannel). The algorithm is based on the discussion of the particularities of the bistatic SAR configuration including coherence improvement and clutter characteristics. Then, the corresponding compensating methods including two-dimensional range-azimuth prefiltering and bistatic differential range correction are proposed to solve these particularities. It is shown that using the compensating methods, the stationary clutter can be suppressed and the moving parameters of ground targets can be estimated accurately. Finally, simulation results demonstrate the effectiveness of the proposed algorithm.

Published in:

Radar, Sonar & Navigation, IET  (Volume:3 ,  Issue: 5 )