Method of suppression of inteference signals in a puls doppler radar

摘要

At least one transmission pulse is emitted at a defined transmission frequency. The first centre frequency (f1) of a tunable receiver filter is set to the first transmission frequency; the filter is set to a second centre frequency (f2), using a difference frequency, to receive noise signals after the transmission pulse. The difference frequency is selected according to the filter characteristic so that clutter signal components are suppressed. The noise signal is measured whilst the second centre frequency is selected and used to adapt the noise suppression filter.