摘要
传统的跳频信号检测方法大多采用短时傅里叶变换分析法,但在慢跳的民用无人机遥控信号检测方面该方法存在检测信道固定、资源利用效率不高等问题。为了解决上述问题,提出了一种基于滑动DFT检测理论的可变检测信道检测法,检测民用无人机遥控信号,并在FPGA中实现了该方法。该方法具有资源利用率高、可裁剪性强的优势,此外在低信噪比和存在定频干扰情况下,该方法仍具有较好的检测性能。
Most of the conventional FH(Frequency Hopping)signal detection methods use the STFT(Short-Time Fourier Transform)analysis,but this method has the problems of fixed detection channel and low resource utilization efficiency in the remote control signal detection of slow hopping civil UAV.To address the above problems,this paper proposes a variable detection channel detection method based on sliding DFT(Discrete Fourier Transform)detection theory for detecting the remote control signals of civil UAV,and implements the method in FPGA(Field Programmable Gate Array).The method has the advantage of high resource utilization and strong clipping.In addition,the method still has good detection performance under the condition of low signal-to-noise ratio and fixed frequency interference.
作者
王维
王红林
申江
WANG Wei;WANG Honglin;SHEN Jiang(College of Physics,University of Electronic Science and Technology of China,Chengdu Sichuan 611731,China;Chengdu Jiuzhou Difei Technology Co.,Ltd.,Chengdu Sichuan 610041,China)
出处
《通信技术》
2024年第2期200-205,共6页
Communications Technology
