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- Title
Hybrid FSK-PSK Waveform Optimization for Radar Based on Alternating Direction Method of Multiplier (ADMM).
- Authors
Fei, Zhiting; Zhao, Jiachen; Geng, Zhe; Zhu, Xiaohua; Zhang, Jindong
- Abstract
In this paper, a new radar signal modulated with a hybrid of the frequency shift keying (FSK) and the phase shift keying (PSK) signal—i.e., the FSK-PSK signal—is studied. Different phase encoding sequences are used to modulate the sub-pulses to obtain lower sidelobe levels and ensure signal orthogonality. In addition, to counter intra-pulse slice repeater jamming of specific length generated by the enemy jammer, an orthogonal waveform made of sub-pulses of equal length based on the FSK-PSK modulation scheme is designed. The simulation results show that the optimized discrete phase encoding sequence can significantly enhance the orthogonality of the sub-pulse in the FSK-PSK signal and effectively suppress the slice repeater jamming. Two algorithms are proposed: (1) the low sidelobe waveform optimization algorithm based on ADMM (LSW-ADMM); and (2) the anti-slice-repeater-jamming algorithm based on ADMM (ASRJ-ADMM). Both algorithms exhibit fast convergence speed and low computational complexity.
- Subjects
RADAR interference; FREQUENCY shift keying; PHASE shift keying; RADAR; PHASE coding; ALGORITHMS
- Publication
Sensors (14248220), 2021, Vol 21, Issue 23, p7915
- ISSN
1424-8220
- Publication type
Article
- DOI
10.3390/s21237915