雷达科学与技术2026，Vol.24Issue(2)：205-213,223,10.DOI:10.3969/j.issn.1672-2337.2026.02.011
基于微弱目标检测的多载波LFM-CPM一体化信号设计
Design of Multi-Carrier LFM-CPM Integrated Signal Based on Weak Target Detection
摘要
Abstract
To improve the insufficient weak target detection performance of radar-communication integrated sig-nals in low signal-to-noise ratio(SNR)environments,a novel multi-carrier linear frequency modulation-continuous phase modulation(LFM-CPM)signal design scheme based on signal reconstruction is proposed in this paper.Firstly,the mathematical models of the multi-carrier LFM-CPM signal and the reconstructed signal are established respectively.Then,a bank of bandpass filters is employed to reconstruct the multi-carrier LFM-CPM signal into a linear frequency-modulated signal.Next,the ambiguity function characteristics and pulse compression performance as well as the perfor-mance of sidelobe suppression after matched filtering are analyzed.Finally,the radar weak target detection performance and communication bit error rate are discussed.Simulation results show that compared with the existing typical integrat-ed waveforms,the proposed multi-carrier LFM-CPM signal achieves a 13 dB improvement in detection probability under low SNR conditions.Meanwhile,while maintaining a communication rate no less than 50%of the 16QAM scheme,the proposed method provides a 4 dB BER performance gain over 16QAM,which show good radar detection and communica-tion capabilities.关键词
雷达通信一体化/连续相位调制/多载波/微弱目标检测Key words
radar-communication integration/continuous phase modulation/multi-carrier/weak target detection分类
信息技术与安全科学引用本文复制引用
傅佶麟,饶烜..基于微弱目标检测的多载波LFM-CPM一体化信号设计[J].雷达科学与技术,2026,24(2):205-213,223,10.基金项目
国家自然科学基金(62161029) （62161029）
