Clutter Filter Using a Minimum Number of Radar Pulses.
DEPARTMENT OF THE NAVY WASHINGTON DC
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A clutter filter which reduces by N-1 the number of input pulses required for operation of an N-pulse MTI canceler when LN consecutive filtered outputs are desired. The clutter filter includes the two channels of an N-pulse MTI canceler which weight and sum the in-phase and quadrature-phase components of N radar returns, and a pair of delay circuits which introduce a delay of N interpulse time periods to the N and subsequent in-phase and quadrature-phase components of the radar returns. The stored outputs of the two channels of the canceler and the consecutive outputs of the delay circuits are combined in a complex multiplier to generate the consecutive in-phase and quadrature-phase outputs of the filter. The clutter filter has utility in a multiple-stage filter system employing a Doppler filter as the last page. Author
- Active and Passive Radar Detection and Equipment