VCR-LFM-BPSK signal design for countering advanced interception technologies

• 来源期刊: 系统工程与电子技术（英文版）
• 年，卷（期）: 2021,（2）
• 所属期刊栏目: ELECTRONICS TECHNOLOGY
• 页码范围: 380-388
• 页数: 9页
• 语种: 英文
• DOI: 10.23919/JSEE.2021.000031

摘要

The hybrid waveform of linear frequency modulation and binary phase shift keying (LFM-BPSK) can take advantages of the LFM and BPSK signals, and reduce the defects of them. However, with the development of interception technology for the LFM-BPSK signal, the application of the signal is limited. In this paper, to improve the anti-interception performance of the hybrid waveform, a new waveform of LFM-BPSK with the vary-ing chirp rate (denoted as VCR-LFM-BPSK) is designed. In this design, based on the working principle of the interception frame for the LFM-BPSK signal, different chirp rates are introduced in different sub-pulses to prevent the signal from being intercepted by the frame. Then, to further improve the anti-interception per-formance of the VCR-LFM-BPSK signal, the chirp rates are op-timized by minimizing the interception capability of the intercep-tor. Moreover, based on the VCR-LFM-BPSK signal with the op-timized chirp rates, the binary phases are designed via a multi-objective Pareto optimization to improve the capabilities of auto-correlation and spectrum. Simulation results demonstrate that the designed VCR-LFM-BPSK signal outperforms the traditional LFM-BPSK signal in countering the advanced interception tech-nologies.