TY - GEN
T1 - A Clutter Suppression Method for Diverse Pulse Train with Different Intra-Pulse Frequency Coding
AU - Wang, Fei
AU - Fan, Huaye
AU - Ren, Lixiang
AU - Mao, Erke
AU - Yang, Jian
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/12
Y1 - 2019/12
N2 - Frequency coded signal possesses attractive performance on low probability of intercept (LPI) and electronic counter-countermeasure (ECCM). However, due to the high sidelobe characteristics of the signal, the effect of clutter should be considered in target detection. In this paper an approach for diverse pulse train with different frequency coding is proposed that enables to detect remote target under strong clutter. By modulating different frequency code sequences between pulses, the range gating can be realized. Then, a frequency domain mismatched filter is constructed to suppress sidelobe. On this basis, a clutter suppression procedure is performed on the range subinterval where strong clutter is located. Finally, the range-Doppler resolution of a target is obtained by two-dimensional (2-D) matched filtering. The simulation results show that the method can effectively suppress folded clutter and improve remote weak targets detection capability of the radar. Besides, two-dimensional matched filtering can effectively solve the envelope migration problem caused by velocity and the Doppler sensitivity problem of the signal, thus reducing the coherent integration loss.
AB - Frequency coded signal possesses attractive performance on low probability of intercept (LPI) and electronic counter-countermeasure (ECCM). However, due to the high sidelobe characteristics of the signal, the effect of clutter should be considered in target detection. In this paper an approach for diverse pulse train with different frequency coding is proposed that enables to detect remote target under strong clutter. By modulating different frequency code sequences between pulses, the range gating can be realized. Then, a frequency domain mismatched filter is constructed to suppress sidelobe. On this basis, a clutter suppression procedure is performed on the range subinterval where strong clutter is located. Finally, the range-Doppler resolution of a target is obtained by two-dimensional (2-D) matched filtering. The simulation results show that the method can effectively suppress folded clutter and improve remote weak targets detection capability of the radar. Besides, two-dimensional matched filtering can effectively solve the envelope migration problem caused by velocity and the Doppler sensitivity problem of the signal, thus reducing the coherent integration loss.
KW - clutter suppression
KW - frequency coded signal
KW - mismatched filter
KW - two-dimensional matched filtering
UR - http://www.scopus.com/inward/record.url?scp=85091910803&partnerID=8YFLogxK
U2 - 10.1109/ICSIDP47821.2019.9173159
DO - 10.1109/ICSIDP47821.2019.9173159
M3 - Conference contribution
AN - SCOPUS:85091910803
T3 - ICSIDP 2019 - IEEE International Conference on Signal, Information and Data Processing 2019
BT - ICSIDP 2019 - IEEE International Conference on Signal, Information and Data Processing 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2019 IEEE International Conference on Signal, Information and Data Processing, ICSIDP 2019
Y2 - 11 December 2019 through 13 December 2019
ER -