A novel sequential algorithm for clutter and direct signal cancellation in passive bistatic radars

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Abstract

Cancellation of clutter and multipath is an important problem in passive bistatic radars. Some important recent algorithms such as the ECA, the SCA and the ECA-B project the received signals onto a subspace orthogonal to both clutter and pre-detected target subspaces. In this paper, we generalize the SCA algorithm and propose a novel sequential algorithm for clutter and multipath cancellation in the passive radars. This proposed sequential cancellation batch (SCB) algorithm has lower complexity and requires less memory than the mentioned methods. The SCB algorithm can be employed for static and non-static clutter cancellation. The proposed algorithm is evaluated by computer simulation under practical FM radio signals. Simulation results reveal that the SCB provides an admissible performance with lower computational complexity.

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Ansari, F., Taban, M. R., & Gazor, S. (2016). A novel sequential algorithm for clutter and direct signal cancellation in passive bistatic radars. Eurasip Journal on Advances in Signal Processing, 2016(1). https://doi.org/10.1186/s13634-016-0431-2

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