The passive radar is a hot research topic. A multi-channel wideband passive radar experimental\nsystem is designed and the digital television terrestrial broadcasting (DTTB) signal is chosen to\ncarry out the target detection experiment of civil aviation aircraft. The polarization and spatial\nfiltering methods are used to solve the strong direct path interference suppression problems\nbrought by the receiving system location; combined with the characteristics of DTTB signal, the\nblock length selection interval in the block batch processing method for range-Doppler images\ncalculation is given; the clutter suppression performance is compared through the experimental\ndata receiving from different bistatic polarization channels, the conclusion is different from the\nmonostatic radar and it can guide the passive radar experiment.
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