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表面波抽头延迟线非相干扩频调制解调器使用m序列相位编码表面波抽头延迟线作为相位编码波形发生器和匹配滤波器。它具有4MHz带宽和32kbit/s的数据率。表面波抽头延迟线中心频率为32MHz。在解调器中,匹配滤波器的输出经包铬检波和幅度判别,以实现对扩频信号的非相干解调。该系统具有简单和快速同步的特点。
Surface-wave tapped delay line incoherent spread-spectrum modems use a m-sequence phase-coded surface wave tapped delay line as the phase-encoding waveform generator and matched filter. It has 4MHz bandwidth and 32kbit / s data rate. Surface wave tapped delay line center frequency is 32MHz. In the demodulator, the output of the matched filter is subjected to chromode detection and amplitude discrimination to achieve non-coherent demodulation of the spread spectrum signal. The system has the characteristics of simple and fast synchronization.