TY - JOUR
T1 - Range-Doppler Sidelobe Suppression for Pulse-Diverse Waveforms
AU - Sun, Yinghao
AU - Fan, Huayu
AU - Mao, Erke
AU - Liu, Quanhua
AU - Long, Teng
N1 - Publisher Copyright:
© 1965-2011 IEEE.
PY - 2020/8
Y1 - 2020/8
N2 - Waveform diversity, which can be used to obtain synthetic bandwidth or mitigate range ambiguity, interference, and folded clutters, has attracted a great deal of attention in recent years. However, the range sidelobe modulation effect between agile pulses yields high range-Doppler sidelobes in pulse-Doppler (PD) radar applications, because of which traditional window functions or mismatched filters (MMFs) do not apply. In this article, a Doppler-tuned matched filter is used to equivalently obtain the PD result. Then, to mitigate the high range-Doppler sidelobes, a two-dimensional MMF (2-D MMF) is proposed, and the relevant signal-to-noise ratio (SNR) loss is deduced. A cyclic algorithm is also designed to calculate the 2-D MMF for suppressing sidelobes over desired range-Doppler regions with constrained SNR loss and mainlobe width. Several simulations and an experiment based on real measured data of an airborne platform are conducted to illustrate the effectiveness of the proposed 2-D MMF.
AB - Waveform diversity, which can be used to obtain synthetic bandwidth or mitigate range ambiguity, interference, and folded clutters, has attracted a great deal of attention in recent years. However, the range sidelobe modulation effect between agile pulses yields high range-Doppler sidelobes in pulse-Doppler (PD) radar applications, because of which traditional window functions or mismatched filters (MMFs) do not apply. In this article, a Doppler-tuned matched filter is used to equivalently obtain the PD result. Then, to mitigate the high range-Doppler sidelobes, a two-dimensional MMF (2-D MMF) is proposed, and the relevant signal-to-noise ratio (SNR) loss is deduced. A cyclic algorithm is also designed to calculate the 2-D MMF for suppressing sidelobes over desired range-Doppler regions with constrained SNR loss and mainlobe width. Several simulations and an experiment based on real measured data of an airborne platform are conducted to illustrate the effectiveness of the proposed 2-D MMF.
KW - Doppler-tuned matched filter (DTMF)
KW - range sidelobe modulation (RSM)
KW - range-Doppler sidelobes
KW - two-dimensional mismatched filter (2-D MMF)
KW - waveform diversity
UR - https://www.scopus.com/pages/publications/85089496978
U2 - 10.1109/TAES.2019.2954152
DO - 10.1109/TAES.2019.2954152
M3 - Article
AN - SCOPUS:85089496978
SN - 0018-9251
VL - 56
SP - 2835
EP - 2849
JO - IEEE Transactions on Aerospace and Electronic Systems
JF - IEEE Transactions on Aerospace and Electronic Systems
IS - 4
M1 - 8903541
ER -