Open AccessCIAPC algorithm forrandom frequency‐hopping radar
Author(s) -
Lu Yi,
Wang Ju
Publication year - 2019
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2019.0675
Subject(s) - frequency hopping spread spectrum , radar , jamming , computer science , algorithm , pulse compression , bandwidth (computing) , pulse doppler radar , range (aeronautics) , doppler effect , doppler frequency , acoustics , electronic engineering , physics , telecommunications , radar imaging , engineering , astronomy , thermodynamics , aerospace engineering
In random frequency‐hopping pulse–Doppler radar, the transmitted frequencies are randomly distributed in the given frequency bandwidth. As a result, this kind of radar has the advantage of anti‐jamming. However, because of the sidelobe level fluctuating randomly, the sidelobe of a large scatterer can mask the presence of nearby smaller scatterers. The adaptive pulse compression (APC) algorithm has been shown capable of effectively suppressing the range sidelobes, but the performance gain is diminished whenever the return signals have a low signal‐to‐noise ratio (SNR). Furthermore, moving targets with high speed bring about the range migration problem. To solve these problems, the coherent integration APC (CIAPC) algorithm is proposed. The simulation results indicate that in a low SNR scenario, the CIAPC algorithm can suppress the range sidelobes of large scatterers and can improve detection performance.