Adaptive Doppler Filter Banks.
Abstract
A radar system for cancelling radar clutter with a minimum of equipment comprising an N-point Fast Fourier Transform for dividing the radar's doppler space into N contiguous frequency subbands; a delay line disposed at each frequency output port for the FFT for obtaining a set of M+1 consecutive samples from each subband, with the sampling performed at the radar's pulse repetition rate divided by N; a single M degree-of-freedom adaptive canceller moving-target indicator; and M+1 commutating switches for consecutively applying different sets of M+1 subband samples to the MTI. This operation permits clutter cancellation in each subband with N different frequency zeros placed in the radar's doppler space for each MTI degree-of-freedom.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 19, 1985
- Accession Number
- ADD012059
Entities
People
- Bernard L. Lewis
Organizations
- United States Department of the Navy