TY - GEN
T1 - Stepped Frequency Waveforms with Phase Compensation for Space-time Adaptive Processing
AU - Wang, Baozhi
AU - Sun, Yuze
AU - Yang, Xiaopeng
AU - Yang, Zhongwei
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/12
Y1 - 2019/12
N2 - Due to the platform motion, the phase differences in a single stepped-frequency burst cannot be avoided, thus the clutter spectrum estimation is misaligned, the clutter suppression performance of space-time adaptive processing (STAP) with stepped frequency (SF) waveform degrades. In order to solve this problem, a phase compensation method is proposed for STAP with SF waveform in this paper. In the proposed method, the echo data is firstly compensated according to range distribution character of clutter. And then per-mismatched processing is utilized for the target steering vector to compensate the phase difference caused by platform motion. After the compensation, the echo data is used to calculate the STAP weight for clutter suppression. Based on the simulation, the clutter is estimated accurately and suppressed effectively. Compared with the results of conventional STAP method with linear frequency modulation (LFM) waveform, the proposed method has higher Doppler resolution and angular resolution.
AB - Due to the platform motion, the phase differences in a single stepped-frequency burst cannot be avoided, thus the clutter spectrum estimation is misaligned, the clutter suppression performance of space-time adaptive processing (STAP) with stepped frequency (SF) waveform degrades. In order to solve this problem, a phase compensation method is proposed for STAP with SF waveform in this paper. In the proposed method, the echo data is firstly compensated according to range distribution character of clutter. And then per-mismatched processing is utilized for the target steering vector to compensate the phase difference caused by platform motion. After the compensation, the echo data is used to calculate the STAP weight for clutter suppression. Based on the simulation, the clutter is estimated accurately and suppressed effectively. Compared with the results of conventional STAP method with linear frequency modulation (LFM) waveform, the proposed method has higher Doppler resolution and angular resolution.
KW - STAP
KW - clutter suppression
KW - phase compensation
KW - stepped frequency waveform
UR - http://www.scopus.com/inward/record.url?scp=85091935093&partnerID=8YFLogxK
U2 - 10.1109/ICSIDP47821.2019.9173155
DO - 10.1109/ICSIDP47821.2019.9173155
M3 - Conference contribution
AN - SCOPUS:85091935093
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 -