The invention discloses a
Radon-Fourier transformation (RFT) blind speed
side lobe (BSSL) suppression method. The method comprises the steps that a
radar system alternately transmits three linear
frequency modulation signals of different pulse recurrence intervals (PRIs),
radar echo signals are received, and
demodulation and
pulse compression are conducted; according to the principle of RFT, the
radar echo signals corresponding to the three PRIs are subjected to RFT
processing, and thus three sets of long-time phase-coherent accumulation speed-distance two-dimensional results are obtained; theminimum values of the three sets of RFT
processing results are taken in pairs for
processing, and three sets of minimum value results are obtained; and the maximum value of the three sets of minimumvalue results is taken, and thus a final processing result is obtained, and BSSL suppression is achieved. According to the method, BSSL suppression is achieved, the
false alarm probability is decreased, and thus the
system detection probability is increased.