Open AccessSidelobe suppression for phase‐coded pulse by mainlobe windowing
Author(s) -
Xu Jiacen,
Ren Lixiang,
Wang Haofei
Publication year - 2019
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2019.0189
Subject(s) - filter (signal processing) , phase (matter) , root raised cosine filter , pulse (music) , computer science , filter design , control theory (sociology) , all pass filter , signal (programming language) , matched filter , mathematics , algorithm , acoustics , low pass filter , physics , high pass filter , telecommunications , artificial intelligence , control (management) , quantum mechanics , detector , computer vision , programming language
Mismatched filter is an important technique to suppress the sidelobes of phase‐coded pulses. Here, the authors propose a mainlobe windowing procedure, by which a much lower sidelobe level can be obtained at a slightly signal‐to‐noise ratio loss. Based on this idea, they present two mismatched filter design procedures, namely an integrated sidelobe level (ISL) optimal filter and a peak sidelobe level (PSL) optimal filter. The ISL optimal filter can be obtained by a formula in closed form and the PSL optimal filter can be obtained by optimisation procedures. Simulation results are presented to verify the theory.