Digital pulse compression filter design for polyphase code
Tao Guang-yuan · Chinese Journal of Radio Science · 2003
In this paper, a side-lobe suppression filter for polyphase signal with small time-bandwidth product is designed. Under constant output of mainlobe leovel condition,the maximum main-side-lobe ratio is obtained by minimizing the integrated side-lobe level and using the square algorithm and weighted iterative algorithm with moderate relaxation of mainlobe width. The simulation results show that the small expansion of mainlobe, SNR loss less than 0.5dB and the increase in main-side-ratio over 10dB in some Doppler frequency range relative to the matched filter.