光学精密工程2009，Vol.17Issue(10)：2535-2541,7.
双通道卫星通信信号快速盲检测
Double-channel fast blind detection of satellite communication signals
摘要
Abstract
Aiming at complex time-varying non-cooperative satellite communication environments with a lower Signal-to-noise Ratio(SNR),a double-channel blind detection algorithm of satellite communication signals based on an energy spectrum and a bispectrum slice is presented.Firstly,the power spectrum is calculated to detect the energy; then,the bispectrum slice is fastly computed by the power spectrum to implement bispectrum detection; finally,the two results are combined.By making use of the second and the third order statistics synchronously,the method increases available information and is favorable to improving the detection performance.Simulation results indicate that detection probability of the method is 10% higher than that of any of the above two in the same lower SNR conditions without adding computational complexity relative to that of energy detection.The presented algorithm can satisfy non-cooperative satellite communication requirements of high speeds,real-time and lower SNRs.关键词
信息处理技术/盲检测/能量谱/双谱切片/卫星通信/信号检测Key words
information processing technology/blind detection/power spectrum/bispectrum slice/satellite communication/signal detection分类
信息技术与安全科学引用本文复制引用
彭耿,黄知涛,陆凤波,姜文利..双通道卫星通信信号快速盲检测[J].光学精密工程,2009,17(10):2535-2541,7.基金项目
湖南省优秀博士论文基金资助项目 （）
国防科技大学创新研究资助项目(No.CX06-01-02) （No.CX06-01-02）
国防科技大学优秀研究生创新资助项目 （）
