Abstract
The target and sea clutter Doppler domains frequently overlap due to the
frequent passage of slow ship targets through the sea clutter zone. In
this letter, a novel sea clutter suppression method is suggested as a
solution to this issue, whose key is a novel singular value zeroing
criterion guided by the search results of two-dimensional spectral
peaks. Verified by simulations, the method proposed can improve
signal-to-clutter ratio (SCR) from -8 dB to 41 dB in the frequency
domain and be more effective than the conventional SVD-FRFT method
in[7] and improved SVD-FRFT method in[8] .