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在讨论了一种无混迭无盲区的宽带数字信道化接收机设计方法的基础上,针对偶型排列宽带数字信道化接收机频带两端输出的两个实数信道不能直接用于信号检测的问题。提出了采用希尔伯特(Hilbert)正交变换的方法将两个实数信道变为复数解析信号,改进信道化接收机的结构,保证实数信道与其它复数信道一样进行信号检测和估计,解决了宽带信道化接收机频带两端的频谱利用问题,提高了宽带数字接收机的频谱覆盖宽度。通过仿真实验,验证了提出的算法的有效性。
Based on the discussion of a design method of a wideband digital channelized receiver without aliasing without aliasing, aiming at the problem that two real channels output from both ends of the dual-channel digital channelized receiver can not be directly used for signal detection . The method of Hilbert orthogonal transform is proposed to transform two real channels into complex analytic signals so as to improve the structure of the channelized receiver and to ensure that the real channel performs the same signal detection and estimation as other complex channels, Wideband channelized receiver at both ends of the band spectrum utilization problems, improve the wideband digital receiver spectrum coverage. The simulation results show the effectiveness of the proposed algorithm.