Ku频段卫星通信信号自适应检测算法  

A Self-adaptive Detection Algorithm for Ku-band Satellite Communication Signals

作　　者：李成[1] 白园 陈飞 LI Cheng;BAI Yuan;CHEN Fei(No.30 Institute of CETC,Chengdu Sichuan 610041,China)

机构地区：[1]中国电子科技集团公司第三十研究所,四川成都610041

出　　处：《通信技术》2021年第4期786-791,共6页Communications Technology

摘　　要：通过对Ku频段通信卫星电磁频谱的分析,提出了一种无须人工干预的自适应检测算法。算法基于信号功率谱平滑拼接的统计特性,结合噪声估计与能量检测迭代策略,实现对Ku频段卫星通信信号的自适应检测。仿真结果表明,算法能够在较低的信噪比下达到较好的检测性能。此外,该算法实时性好、且通用性好,更能满足实际工程实现的需要。Through the analysis of the electromagnetic spectrum of Ku-band communication satellites,a self-adaptive detection algorithm without human intervention is proposed.The algorithm is based on the statistical characteristics of smooth splicing of signal power spectrum,combined the noise estimation and an iterative strategy for energy detection,to realize adaptive detection of Ku-band satellite communication signals.Simulation results indicate that the proposed algorithm can achieve better performance at low SNR.In addition,the algorithm has good real-time performance and good general purpose,which can meet the needs of practical engineering implementation.

关 键 词：频谱拼接 频域平滑 噪声估计 自适应检测 

分 类 号：TN918[电子电信—通信与信息系统]