雷达科学与技术2024，Vol.22Issue(5)：507-514,8.DOI:10.3969/j.issn.1672-2337.2024.05.005
低信噪比下信号联合参数测量与识别方法
Signal Joint Parameter Measurement and Identification Method Under Low Signal-to-Noise Ratio
摘要
Abstract
The traditional methods for parameter measurement of radiation source signals have problems such as low accuracy,engineering implementation challenges,and the need for separate signal modulation and recognition steps.In this paper,a method for joint measurement and identification of signals under low signal-to-noise ratio(SNR)condi-tions is proposed based on the instantaneous phase difference feature of signals.The proposed method employs a non-coherent accumulation detection algorithm to improve the accuracy of time-domain parameter measurement under low SNR,ob-taining the instantaneous phase difference feature of the signal.It jointly measures and identifies the carrier frequency information and modulation methods.The algorithm has low computational complexity,making it convenient for engineer-ing implementation.Simulation and experimental results validate its high measurement accuracy and identification proba-bility for binary phase shift keying signals,linear frequency modulated signals,and single carrier frequency signals.关键词
参数测量/脉内调制识别/低信噪比/FPGA实现Key words
parameter measurement/intra-pulse modulation recognition/low signal-to-noise ratio/FPGA imple-mentation分类
信息技术与安全科学引用本文复制引用
王胜华,邓宇坤,赵晨博,贺鹏超,曹运合..低信噪比下信号联合参数测量与识别方法[J].雷达科学与技术,2024,22(5):507-514,8.基金项目
陕西省自然科学基金面上项目(No.2024JC-YBMS-555) （No.2024JC-YBMS-555）
航天771所创新基金(No.771CX2023003) （No.771CX2023003）
